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POWERSYS Corporate
Publications
137 document(s) found:
- 104 document(s) in English
- 10 document(s) in French
- 1 document(s) in Italian
- 8 document(s) in Polish
- 1 document(s) in Romanian
- 1 document(s) in Russian
- 12 document(s) in Spanish
Please find below a selection of scientific and academic publications dealing with PSIM applications.
If you are a teacher or a researcher and wish to submit one of your paper, please feel free to
If you are a teacher or a researcher and wish to submit one of your paper, please feel free to
Find a Publication
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285 download(s)
2. How to Use the ACSweepVincent Capron - Powersys This tutorial explains how to use the PSIM function AcSweep.
Document focus on / product (power):
None ()
Publication: 01-12-2004 Type: Powersys tutorial Language: English |
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306 download(s)
3. How to use the DLL BlockVincent Capron - Powersys This document explains how to use the PSIM function DLL.
Document focus on / product (power):
None ()
Publication: 01-12-04 Type: Powersys tutorial Language: English |
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253 download(s)
4. How to use the SimcouplerVincent Capron - Powersys This tutorial explains how to use the PSIM function "Simcoupler"
Document focus on / product (power):
None (undefined)
Publication: 01-12-04 Type: Powersys tutorial Language: English |
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249 download(s)
5. Sensorless Sinusoidal Current Rectifier Supplied fromKrzysztof Wejrzanowski, Wlodzimierz Koczara - Warsaw University of Technology Paper presents theory and test results of sensorless sinusoidal current active rectifier with controllable waveform of ac supply current.
Document focus on / product (power):
Rectifier (undefined)
Publication: 01-06-2004 Type: Scientific publication Language: English |
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345 download(s)
6. An application of PSIM simulation software for
rapid prototyping of DSP based power electronics
control systemsBartomiej Kaminski, Krzysztof Wejrzanowski, Wlodzimierz Koczara - Warsaw University of Technology The paper presents power electronics research opportunities provided by PSIM simulation software and high performance floating point DSP controller. Advantages of PSIM?s C/C++ modeling capabilities are shown by modeling of DSP controller runtime environment(RTE).
Document focus on / product (power):
None (undefined)
Publication: 01-06-2004 Type: Scientific publication Language: English |
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269 download(s)
7. Control System of the Variable Speed Autonomous DoublyG. Iwanski, Wlodzimierz Koczara - Warsaw University of Technology In the following paper the autonomous power generation system includes a doubly fed induction generator is described. A simplified topology of the power electronics converter, connected to the rotor, is applied. Subsynchronous range of speed is main region of operation but small, negative, close to rated slip, is also possible. An external source is used for an initial excitation of the generator and then a converter connecting rotor and stator is used to control stator voltage.
Document focus on / product (power):
Drive (undefined)
Publication: ? Type: Scientific publication Language: English |
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215 download(s)
9. Simple Autonomous Sensorless Generation System With Wound Induction MachineWlodzimierz Koczara - Warsaw University of Technology The paper presents theory and results of tests of simple variable speed autonomous generating system. The system consists of double fed induction machine and power electronic converter. A topology and control system permits island operation. For design a simulation program SIMCAD with DLL package is applied.
Document focus on / product (power):
Drive (undefined)
Publication: 29/10/2004 Type: Scientific publication Language: English |
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305 download(s)
10. Utilisation des outils de simulation pour une approche pédagogique en électronique de puissance.Frédéric Richardeau, Hubert Piquet, Philippe Ladoux - Enseeiht Olivier Toury - Powersys Simulation tools for power electronics specially adapted to an educational approach now exist, as they are conceived to enable the simulation of power converters and control loops in a very intuitive way. PSIM simulation software used in this study allows digital simulations of converters (diagram, calculation, visualization) in a simple, robust, rapid and almost immediate way for students.
Document focus on / product (power):
None (undefined)
Publication: 29/10/2004 Type: Scientific publication Language: French |
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176 download(s)
11. PSIM virtual machinery of a cruise ship for dynamic performance studiesRonan Besrest - Capsim This paper presents the design and the results of a virtual machinery tool developed with PSIM software dedicated to transient analysis of All Electric Ship power networks. This work has been made for and with a major French ship manufacturer.
Document focus on / product (power):
Electrical Network (undefined)
Publication: 01/01/2005 Type: Scientific publication Language: English |
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627 download(s)
13. An application of PSIM simulation software for rapid prototyping of DSP based power electronics control systemsBartomiej Kaminski - Warsaw University of Technology An application of PSIM simulation software for rapid prototyping of DSP based power electronics control systems
Document focus on / product (power):
None (undefined)
Publication: 01/01/2005 Type: Scientific poster Language: English |
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447 download(s)
14. PSIM PresentationThis document presents the functionning of the PSIM simulation software, the main functionnalities and a list of some application examples.
Document focus on / product (power):
None (undefined)
Publication: 27/09/2005 Type: Commercial Presentation Language: English |
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420 download(s)
15. Using PSIM in the IEEE FEC 2005: Control Parameters for an Inverter SystemIng. Christoph Weissbacher - ISEA, RWTH Aachen University, Germany This documentation presents the circuit Model of the Inverter in PSIM, Simulation Results without Control, control theory application and simulation results with Control.
Document focus on / product (power):
UPS (low)
Publication: 01/06/2005 Type: Scientific publication Language: English |
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148 download(s)
16. Virtual machinery of the cruise ship C32 for dynamic performance studiesRonan Besrest - Capsim This paper presents the study done by CAPSIM on the electrical network of the cruise ship C32.
Document focus on / product (power):
Electrical Network (undefined)
Publication: 01/09/05 Type: Scientific publication Language: English |
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289 download(s)
17. PSIM-Program for the Analysis of Power Electronic Converter Devices and SystemsAndrey Kolpakov - Mega Electronica Specialised software is the basic tool for up-to-date- designers. Without using these tools, it would not be possible to create new electronic technologies. These tools are dedicated to the design, calculation and modeling of electronic circuits. The article deals with the new software PSIM, which enlarges modeling possibilities for electronic circuits and is especially oriented to the analysis of power electronic circuits.
Document focus on / product (power):
None ()
Publication: 2003 Type: Newspaper Article Language: Russian |
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317 download(s)
18. How to increase the Efficiency of P&O MPPT by Converter Dynamic MatchingG.Petrone, G.Spagnuolo, N.Femia - University of Salerno M.Vitelli - Second University of Naples This paper shows that the efficiency of the Perturb and Observe (P&O) Maximum Power Point Tracking (MPPT) control technique can be improved by optimizing its sampling interval Ta according to the converter?s dynamics. During sunny days, when the maximum power point of the photovoltaic (PV) array moves very slowly, the sampling interval Ta must be set as short as possible without causing instability. If the algorithm samples the array voltage and current too quickly, it is subjected to possible mistakes caused by the transient behavior of the PV array+converter system, thus missing temporarily the MPP. As a consequence, the algorithm can be confused, the energy efficiency decays, and the operating point can become unstable, entering disordered behaviors. The solution proposed in this paper lies in choosing Ta according to the converter?s dynamics. The choice of the value of Ta according to the proposed approach ensures a three-level steady-state duty-cycle swing around the MPP, whatever the duty-cycle step-size and the irradiance level are. As an example, a boost MPPT battery charger has been studied.
Document focus on / product (power):
Battery charger (undefined)
Publication: 11-06-2004 Type: Scientific publication Language: English |
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262 download(s)
19. Steady-State Analysis of Hard and Soft SwitchingG.Spagnuolo, N.Femia - University of Salerno In this paper, a unified method for steady-state analysis of hard-switching and soft-switching dc-to-dc converters is presented. The power stage and the feedback control circuit forming the regulator are modeled separately and analyzed as two interconnected blocks. The intersection of the open loop dc steady-state characteristics of these cascaded blocks provides the initial condition for a guess candidate steady-state solution (CS). The CS is validated as true steady-state solution (TS) if the bias conditions of switching devices are fulfilled everywhere in the switching period, otherwise the CS is changed according to the conditions violated. The CS approaches the TS through an iterative process of validation. The basic tools adopted to ensure a reliable computation of the CS are interval analysis (IA), for the identification of the commutation instants (CI), and the compensation theorem (CT), for the analysis of commutations. Some examples of applications to hard-switching and soft-switching dc?dc regulators are presented. Index Terms?Steady-state analysis, switching regulators.
Document focus on / product (power):
switching regulator (undefined)
Publication: 01/01/2003 Type: Scientific publication Language: English |
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248 download(s)
20. Steady-State Analysis of Soft-Switching ConvertersG.Spagnuolo, N.Femia - University of Salerno Abstract?Steady-state analysis of soft-switching converters is discussed in this paper. Finding the steady-state solution of soft-switching converters by means of start-up transient simulation may involve onerous computations and convergence failure, because of the mix of fast and slow natural frequencies determined respectively by the presence of soft-switching Lr-Cr cells elements and bulky L-C filter elements. The numerical method proposed in this paper shows high reliability and fast convergence, thanks to the adoption of an interval analysis based technique for the detection of commutations and of a compensation theorem based technique for the analysis of commutations. Some examples of steady-state analysis of two dc?dc converters, an inverter and a power factor corrector are presented to highlight the good performances of the simulation algorithm. Index Terms?Compensation theorem, interval analysis, soft-switching converters, steady-state analysis.
Document focus on / product (power):
soft switching converters (undefined)
Publication: 02/07/2002 Type: Scientific publication Language: English |
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200 download(s)
21. Tolerance Design of ControllersG.Petrone, G.Spagnuolo - University of Salerno An evolutionary approach to worst case tolerance design is introduced here, with a focus on feedback compensation networks for dc-dc switching converters. Assumed that varying parameters values are uniformly distributed and uncorrelated, as provided by the worst case approach, the proposed algorithm, of general applicability, seeks for the set of nominal values and tolerances of the circuit parameters ensuring that the design constraints are met and that a user-defined circuit performance index assumes its optimal value. Design constraints are fixed in the frequency domain, in terms of acceptability ranges of loop gain crossover frequency and phase margin, to guarantee closed loop stability and the desired dynamic performance. Resistive and capacitive compensation network?s parameters values are chosen within a suitable database of couples nominal value/tolerance available on the market, while the nominal values and tolerances of the parameters of the power stage are fixed. Referring to a buck dc-dc switching regulator, two widely used different compensation network topologies are compared in terms of reliability, robustness, and cost of components. Simulation results show the wide usefulness of the proposed method in supporting designer decisions.
Document focus on / product (power):
dc-dc switching converter (undefined)
Publication: 15/04/2004 Type: Scientific publication Language: English |
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337 download(s)
23. Compensación de energía reactiva mediante filtros activos de potencia.D. Oterino, M. Ruz - Universidad de Córdoba This thesis aims at demonstrating the capabilities of power active filters for various applications using both softwares PSIM 6.0 and Matlab 5.3/Simulink 3.0 in co-simulation. Análisis de: - Calidad de red de suministro eléctrico. - Métodos de compensación de energía reactiva en comvertidores empleando Psim 6.0.
Document focus on / product (power):
Active filter (undefined)
Publication: 01/11/2004 Type: Master Thesis Language: Spanish |
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35 download(s)
24. Evaluation of the Converter Topologies suited for Integrated Motor DrivesC. Klumpner - IEEE Abstract- Currently, standard Adjustable Speed Drives (ASDs) consist of a diode rectifier and a PWM voltage source nverter. The energy stored in the dc-link capacitor is high and heavy iron chokes are needed in order to reduce the peak current through the rectifier diodes and to reduce the input current THD. New regulations to impose better interaction with the grid are expected to force the ASD manufacturers to add major changes to their products in order to improve the input current quality which may additionally provide other benefits such as regulated dc-link voltage and better immunity to unbalanced voltage supply. This paper investigates alternative three-phase ASD topologies for integrated motor drives by discussing the hardware requirements and comparing their performance, size of magnetics and also efficiency, which in this case is important in order to determine their cooling requirements. Keywords - adjustable speed drives; direct power conversion; loss distribution; power quality; unbalanced voltage supply.
Document focus on / product (power):
Drive (undefined), Inverter (undefined), Rectifier (undefined), Semiconductor loss estimation (undefined)
Publication: 2003 Type: Scientific publication Language: English |
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225 download(s)
25. Using Reverse Blocking IGBTs in Power Converters for Adjustable Speed DrivesC. Klumpner, Frede Blaabjerg - IEEE A new semiconductor power device badly needed in certain power converter topologies, the reverse blocking IGBT, has been realized by adding minor changes to the structure of a standard IGBT, which makes it capable of withstanding reverse voltage, but the switching behavior of its intrinsec diode during reverse recovery is not so good as it is in a discrete IGBT and series diode implementation. This paper will analyze the use of this device in three power converter topologies that may benefit from it: the matrix converter, the two-stage Direct Power Converter (DPC) and the three-level voltage source rectifier. A commutation method to override the poor reverse recovery characteristic of the RB-IGBT intrinsec diode in a two-stage DPC is proposed. A loss analysis shows that by using RB-IRBTs, the efficiency of the two-stage DPC becomes similar to a two-level Voltage Source Converter, which is known as the most efficient sine wave-in topology.
Document focus on / product (power):
Drive (undefined), Semiconductor loss estimation (undefined)
Publication: 2003 Type: Scientific publication Language: English |
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167 download(s)
26. Hybrid Direct Power Converters with Increased/Higher than Unity Voltage Transfer Ratio and Improved Robustness against Voltage Supply Disturbances.C. Klumpner - University of Nottingham Variable voltage and variable frequency conversion of electrical energy from an AC source to an AC load is done in traditional power converters via a DC-link where an energy storage element (electrolytic capacitors) is situated. Despite its well-known benefits, it has the disadvantage of being bulky and to limit the converter lifetime. On the other hand, Direct Power Conversion (DPC) is an attractive concept, which doesn?t need an energy storage buffer, but has two main disadvantages: reduced voltage transfer ratio (<0.86) and low immunity to voltage supply disturbances. This paper proposes a new method to improve both the voltage transfer ratio and the robustness against voltage supply unbalance by employing a new concept of power conversion based on hybrid structures while the installed power and energy storage in the auxiliary converters remain low.
Document focus on / product (power):
Hybrid Direct Power Converters (undefined)
Publication: 2005 Type: Scientific publication Language: English |
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217 download(s)
27. A Direct Power Electronic Conversion Topology for Multi-Drive ApplicationsC. Klumpner - University of Nottingham Frede Blaabjerg - Aalborg University, The matrix converter is known as a single stage AC/AC converter, which is able to provide sinusoidal PWM output voltages and input currents, inherent bi-directional power flow and no reactive elements (bulky DC-capacitors and large line inductors). However, the increased number of active switches (18), as well as the need of a protection circuit involving twelve diodes with rated voltage/current ratings used only during faulty situation, makes this topology not so attractive. In this paper, a two-stage converter topology consisting of a three-phase to two-phase matrix converter directly linked to a Voltage Source Inverter (VSI) that provides Direct Power Electronic Conversion (DPEC) is analyzed. While the functionality is similar to a matrix converter, the analysis of the conduction losses shows a different shape of the efficiency curve, which in HVAC application may be an advantage. In addition, a topology is proposed where several VSIs are connected to the same DC-link and their switching patterns are synchronized, which is especially useful for multi-drive application. The functionality of the proposed two-stage multi-drive direct power electronic conversion topology is analyzed by simulations.
Document focus on / product (power):
Drive (undefined)
Publication: 2003 Type: Scientific publication Language: English |
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343 download(s)
28. Development of an Inverter Control Algorithm using PSIMIng. Christoph Weissbacher - ISEA, RWTH Aachen University, Germany The objective of this work was to develop a control algorithm for a single phase inverter system as specified by the IEEE Future Energy Challenge 2005 regulations. The simulation software PSIM was chosen because it is easy to use and represents a good compromise between simulation speed and physically exact device modelling. The results show that the developed control algorithm can be expected to work within the boundaries of the simulated first order effects.
Document focus on / product (power):
None ()
Publication: 10/10/2005 Type: Scientific publication Language: English |
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214 download(s)
29. PSIM/MATLAB* co-simulation for AES electrical architectures global modelsRonan Besrest - Capsim AES power plant transient simulation problem is known as a difficult case considering calculation time and numerical stability. This paper presents the co-simulation approach and method for AES application. This technique has been introduced in the CTSN modelling and simulation tool called ?MOSARE?. It has been applied with success on various AES electrical architectures simulation cases. Some comparisons between MATLAB, PSIM and co-simulation on AES well known cases are analysed regarding simulation time on standard PC, numerical stability, and global functionalities and advantages.
Document focus on / product (power):
Electrical Network (undefined)
Publication: 01/10/2005 Type: Scientific publication Language: English |
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223 download(s)
30. Results of testing a vector controlled AC tram driveAndrzej Debowski, Grzegorz Lisowski, Piotr Chudzik - Institute of Automatic Control, TU Lodz, Poland The paper deals with control problems of an AC tram drive designed for modernization of existing trams in Poland. The described tram drive was build for ZKM Elblag in cooperation with the firm ENIKA in Lodz. During the street tests behaviour of the drive, the electric and dynamic transient states accompanying accelerating and electromagnetic braking of the tram were carrefully observed. At the same time, drive was designed and simulation model (using PSIM software) was created. Examples of transients for some electric and electromagnetic signals recorded during the tram tests and observed in the simulation model are enclosed and compared.
Document focus on / product (power):
None ()
Publication: oct 2005 Type: Scientific poster Language: English |
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157 download(s)
31. Results of testing a vector controlled AC tram driveAndrzej Debowski, Grzegorz Lisowski, Piotr Chudzik - Institute of Automatic Control, TU Lodz, Poland The paper deals with control problems of an AC tram drive designed for modernization of existing trams in Poland. The described tram drive was built for ZKM Elblag in cooperation with the firm ENIKA in Lodz. During the street tests behavior of the drive the electric and dynamic transient states accompanying accelerating and electromagnetic braking of the tram were carrefully observed. At the same time as the real tram real drive was designed and simulation model (using PSIM software) was created. Examples of transients for some electric and electromagnetic signals recorded during the tram tests and observed in the simulation model are enclosed and compared.
Document focus on / product (power):
None ()
Publication: 05-09-2005 Type: Scientific publication Language: English |
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177 download(s)
32. Modeling of Adjustable Speed Generation System with Liquid Fuel and Gas Powered EngineN. Al-Khayat, Wlodzimierz Koczara, Z. Chlodnicki - Warsaw University of Technology Hydrogen is a future fuel which will be used in electrical power generation systems. There are two main streams of works on the hydrogen application. In the first, there is direct conversion of hydrogen to electricity by fuel cells. The fuel cells are recently very intensively developed but the progress is still too slow.In the second stream, the hydrogen is used as fuel in internal combustion engines. The efficiency of internal combustion engine is simpler. Main works are carried to use the hydrogen in automotive engines. In this paper is considered application of hydrogen power engine in modeling and simulation of the adjustable speed generation systems. The paper presents modeling and simulation of the adjustable speed generation system with internal combustion engine, permanent magnet generator and power electronic converter. The engine speed is adjusted to meet load power demand. The power electronic converter is producing three phase AC fixed frequency voltage.
Document focus on / product (power):
None ()
Publication: oct 2005 Type: Scientific publication Language: English |
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184 download(s)
33. Active Compensator of DC Load Power VariabilityGrzegorz Wodecki, Wlodzimierz Koczara - Warsaw University of Technology Paper presents theory and application of new type of compensator of active power variability. The compensator bases on supercapacitor energy storage and power electronic converter. To control the source current, the load current is sensed and then the running average current is calculated. A difference of the load current and running average is used to produce reference compensator current. Results of simulations and laboratory tests of DC power system confirm quality of the compensator operation.
Document focus on / product (power):
None ()
Publication: oct 2005 Type: Scientific publication Language: English |
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214 download(s)
34. Modelling and Simulation of Fuel Cell Powered Electrical Car Drive SystemPrzemyslaw Majewski, Wlodzimierz Koczara - Warsaw University of Technology The paper presents modelling and simulation of the electrical car powered from fuel cell. The performance of the fuel cell do not assure demanded dynamic of the car motion. Therefore an additional energy storages as supercapacitors and batteries equipped in power electronic converters are used. Proposed power system topology and control system of power and energy flow is designed to safe long life of the fuel cell and high dynamic performance of the car motion.
Document focus on / product (power):
None ()
Publication: oct 2005 Type: Scientific publication Language: English |
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43 download(s)
35. Switched reluctance motorMarco Toniolo, Roberto Menis - None The subject of the report is a switched reluctance motor drive for a steer by wire system. In the report the model of the converter and the motor, the control system and the simulation program are described.
Document focus on / product (power):
Steer by wire drive (low)
Publication: 07-12-05 Type: Scientific report Language: Italian |
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238 download(s)
36. Control Units of Voltage Inverter With the Pulse Width and Pulse Phase ModulatorsTomasz BINKOWSKI - RZESZOW University of Technology The voltage inverter is the power electronic converter which converts the energy of direct current into the energy of alternate current. It connects the DC voltage source with the AC load. The AC load must be the current source one. This connection is realized with the use of the semiconductor power switches. In order to obtain needed output waves the proper switches must be turned off and turned on in a restricted sequence for a restricted period of time. In the paper the structures of two control units of voltage inverter were described and compared using the pulse width modulation and phase pulse modulator. Investigations of presented problem were done using PSIM simulation system based on a control code link as a DLL module.
Document focus on / product (power):
None ()
Publication: 12-09-2005 Type: Scientific publication Language: Polish |
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201 download(s)
37. The Control Unit Simulation of the Voltage Inverter Based on Microprocessor SolutionTomasz BINKOWSKI - RZESZOW University of Technology The launching of a new or an elaborated experimental model of the power converter control unit needs the conducting of base simulation researches. The fast technological development of microprocessor units as well as their relevantly small cost cause that the realization of control unit in the microprocessor technique is faster and more comfortable than by using the analog electronic units. Moreover, the use of microprocessor in control unit implicates the big reliability of the control process. The representation of control algorithms in a software code form induces detection of a programmer fault just during physical experiment. It often leads to the control unit, power converter or load damage. In the paper the method of a control code test was described. This code was determined as an element of simulation model in PSIM simulation system. The control code in C language was compiled as a DLL library and linked to PSIM as a DLL module.
Document focus on / product (power):
None ()
Publication: 12-09-2005 Type: Scientific publication Language: Polish |
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224 download(s)
38. How to create a SubcircuitVincent Capron - Powersys This tutorial explains how to create a Subcircuit.
Document focus on / product (power):
None ()
Publication: 01-12-04 Type: Powersys tutorial Language: English |
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273 download(s)
39. The simplified Control Unit of Matrix ConverterTomasz BINKOWSKI - RZESZOW University of Technology In the paper, the new control method of AC/AC power converter was presented. This solution allows the control unit simplification and enables setting of both the output current frequency and the input displacement factor. Introduced innovations in control algorithm are very important because the hardware driver doesn't require the independant microprocessor. The proposed controller and the matrix of bi-directional switches (two IGBT transistors) can be made in one structure. Existing previous work in the matrix control field refers to the pulse width modulation in scalar, Venturini or vector method. A complicated control process is caused in the very expanded control unit. An application of the constant switching and the space vector description of the input current and the output voltage was laboratory tested. The new solution was compared with the well known space modulation method (SVM).
Document focus on / product (power):
None ()
Publication: 19/05/05 Type: Scientific publication Language: English |
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444 download(s)
40. Regenerative Braking for an Electric Vehicle Using Ultracapacitors
and a Buck-Boost ConverterJuan W. Dixon - Catholic University of Chile An ultracapacitor bank control system for an Electric Vehicle has been simulated. The purpose of this device is to allow higher accelerations and decelerations of the vehicle with minimal loss of energy, and minimal degradation of the main battery pack. The system uses an IGBT Buck-Boost converter, which is connected to the ultracapacitor bank at the Boost side, and to the main battery at the Buck side. The control of the system measures the battery voltage, the battery state-of-charge, the car speed, the instantaneous currents in both the terminals (load and ultracapacitor), and the actual voltage of the ultracapacitor. This last indication allows to know the amount of energy stored in the ultracapacitor. A microcomputer control manipulates all the variables and generates the PWM switching pattern of the IGBTs. When the car runs at high speeds, the control keeps the capacitor discharged. If the car is not running, the capacitor bank remains charged at full voltage. Medium speeds keep the ultracapacitors at medium voltages, to allow future accelerations or decelerations. The battery voltage is an indication of the car instantaneous situation. When the vehicle is accelerating, the battery voltage goes down, which is an indication for the control to take energy from the ultracapacitor. In the opposite situation (regenerative braking), the battery voltage goes up, and then the control needs to activate the Buck converter to store the kinetic energy of the vehicle inside the ultracapacitor. The measurement of the currents in both sides allows to keep the current levels inside maximum ratings. The battery state-ofcharge is used to change the voltage level of the ultracapacitor at particular values. If the battery is fully charged, the voltage level of the capacitors is kept at lower levels than when the battery is partially discharged. The converter also has an IGBT controlled power resistor, which allows to drop energy when in some extreme situations cannot be accepted neither for the ultracapacitors nor for the battery pack. The car that will be used for future implementation of this experiment is a Chevrolet LUV truck, similar in shape and size to a Chevrolet S-10. This vehicle was already converted to an electric car at the Catholic University of Chile.
Document focus on / product (power):
Buck-boost converter (undefined)
Publication: 2005 Type: Scientific publication Language: English |
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22 download(s)
41. Static resonant converterRubén Calduch Cobos - EUETIB Paper present theory and application of new type of static resonant converter. The static resonant converter base on resonant topologies of two and three reactive components. The first two topologies with two components reagents are carried out to introduce the reader in the thematic one. Finally two structures are studied with three elements reagents, with those that more sophisticated circuits are built.
Document focus on / product (power):
static converter (undefined)
Publication: 10-2006 Type: Scientific publication Language: English |
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66 download(s)
42. Resonant convertersRubén Calduch Cobos - EUETIB Resonant converters
Document focus on / product (power):
static converter (undefined)
Publication: 10-2006 Type: Oral Presentation Language: English |
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51 download(s)
43. PSIM-Based Modeling and Simulation of Shunt Active Power FilterEngin Ozdemir - Kocaeli University The paper deals with the modelling and simulation of the shunt active power filter (APF) to compensate harmonics and the reactive power requirement of nonlinear loads using PowerSIM (PSIM) software. A current controlled voltage source inverter (VSI) based configuration is used as the shunt APF and hysteresis-band current control technique is employed to derive gating signals to the shunt APF. The main principle for the control algorithm is based on the instantaneous reactive power (IRP) theory. A 3-phase diode bridge rectifier with resistive-inductive load is selected as a non-linear load. Steady state as well as transient test results with the PSIM software is given to validate the conventional control method for the shunt APF.
Document focus on / product (power):
Active filter (undefined)
Publication: 10-2006 Type: Scientific publication Language: English |
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24 download(s)
44. Energy & Power system Analysis in Pakistan Comparable with Neighbouring countries
Tariq MASOOD.CH - University of BATH Herewith, this is my draft copy of thesis work interim report to emphasise the oriented objective. In first section I?ve broken the land stone to create clear perception of Power electronics contribution in electrical power system. Therefore, in this phase of my project all practical work has been grounded how the power electronics executed in the power control system. It has been focused on lead and Lag compensator by means of bode plots, which are conventional control. These conventional controllers will be fabricated as per Statcom, BTB, UPFC controls. At the moment, I'm consulting with my supervisor and co-supervisors to simulate FACTS controllers with best of my level to strive holistic control; I don?t know how much I' would be successful. This is my oriented goal; I'm endeavouring to accomplish this goal, which will be new addition in FACTS an emerging technology. Secondly, following engineering tools have been used to simulate variant cases. I?m still working to further refine these cases with degree of precision.
Document focus on / product (power):
(undefined)
Publication: 10-2006 Type: Scientific publication Language: English |
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138 download(s)
45. Thermal Behaviour and Fatigue Estimation of the Switching Regulator
for the BTF Power Supply of DAÖNE InjectorF. Chiusano - CERN The BTF power supply is used to extract from the beam transfer line the particles pulses coming from the LINAC which normally fill the DAÖNE collider at Frascati INFN Lab. This new power converter has been designed to feed a bending magnet with 447 A at nominal conditions and with a total ramp up and down of 20 ms. This power converter can run either in pulsed mode or in a conventional DC current mode. In pulsed mode the flat top can be streched from 5 ms up to 960 ms allowing a multi-pulse extraction. The heart of the system is based on a static converter with an H bridge topology made of IGBTs with integrated free wheel diodes. On one hand this paper presents the analysis of the thermal behaviour, the fatigue estimation and the impact on the power converter life time. On the other hand the design of a forced air cooling system is presented with the final results.
Document focus on / product (power):
(undefined)
Publication: 09-01-2007 Type: Scientific publication Language: English |
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248 download(s)
46. Extension of the Harmonic Elimination Technique in the presence of Non Linear Loads.A. Lázaro - Universidad Carlos III de Madrid The harmonic elimination technique consists on finding the proper inverter switching events so that the first harmonic amplitude is controlled and the rest of odd harmonic components are suppressed. However, non linear loads connected to the output of the inverter provoke additional harmonics that distort the output voltage signal. Along the present work it is proposed an extension of the harmonic elimination technique. This extension pretends to determine the switching events so that the inverter is capable of generating a controlled fundamental harmonic that complies specifications and also generates the next odd harmonic components in a way that added to the ones provoked by the load, they cancel each other out. The described method has been validated through simulation and currently it is being validated experimentally.
Document focus on / product (power):
(undefined)
Publication: 09-01-2007 Type: Scientific publication Language: English |
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113 download(s)
47. Extensión de la técnica de eliminación de armónicos para su uso
en presencia de cargas no linealesA. Lázaro - Universidad Carlos III de Madrid La técnica de eliminación de armónicos consiste en determinar los instantes de disparo (ángulos) apropiados para proporcionar en la salida del inversor un primer armónico controlado y eliminar un nº determinado de armónicos impares. Sin embargo, la conexión de una carga no lineal a la salida del inversor supone la aparición de armónicos no deseados y la distorsión de la onda de tensión. En este trabajo, se propone una extensión de la técnica de eliminación de armónicos cuyos ángulos de disparo generen, a la salida del inversor, un primer armónico también controlado y unos armónicos tales que se cancelen con aquellos que son provocados por la carga no lineal. Este planteamiento ha sido validado mediante simulación y experimentalmente.
Document focus on / product (power):
None ()
Publication: 09-01-2007 Type: Scientific publication Language: Spanish |
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88 download(s)
48. Nonlinear positioning control of a magnetoelectric linear driveMarcin Kowalski - Institute of Automatic Control, TU Lodz, Poland The goal of this research is to design of a microprocessor based control system for the laboratory model of a magnetoelectric drive for driving valves in the combustion engine. This new idea of controlling the movement of valves is called camshaft-less engine.
Document focus on / product (power):
(undefined)
Publication: 12/02/2007 Type: Scientific publication Language: English |
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188 download(s)
49. A New Two-Stage Voltage Source Inverter with Modulated DC-link Voltage and Reduced Switching LossesC. Klumpner - University of Nottingham This paper proposes a new DC/AC power converter topology that is obtained by merging a buck type DC/DC converter and a DC/AC three-phase PWM Voltage Source Inverter (VSI) without the need of the passive components (smoothing inductor and capacitance) between the two stages. The novel topology is characterized by less hard switchings needed to synthesize the desired output voltage states, mostly because the average voltage seen by the VSI is modulated in such a way that enables the elimination of its zero voltage state and allows for some zero voltage switchings, reducing the switching losses, that makes this topology more suitable for higher frequency operation, which would ultimately reduce the size of the converter in applications where a load side output filter needs to be fitted.
Document focus on / product (power):
Inverter (undefined)
Publication: 20-04-2007 Type: Scientific publication Language: English |
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178 download(s)
50. Evaluation of the converter topologies suited for integrated motor drivesC. Klumpner - University of Nottingham CURRENTLY, STANDARD ADJUSTABLE speed drives (ASDs) consist of a diode rectifier and a pulsewidth modulated (PWM) voltage-source inverter. The energy stored in the dclink capacitor is high, and heavy iron chokes are needed in order to reduce the peak current through the rectifier diodes and to reduce the input current total harmonic distortion (THD). New regulations to impose better interaction with the grid are expected to force ASD manufacturers to add major changes to their products in order to improve the input current quality, which may additionally provide other benefits such as regulated dc-link voltage and better immunity to unbalanced voltage supply. This article investigates alternative three-phase ASD topologies for integrated motor drives by discussing the hardware requirements and comparing their performance, size of magnetics, and efficiency, which in this case is important in order to determine their cooling requirements.
Document focus on / product (power):
Drive (undefined)
Publication: 20-04-2007 Type: Scientific publication Language: English |
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119 download(s)
51. A Hybrid Indirect Matrix Converter Immune to Unbalanced Voltage Supply, with Reduced Switching Losses and Improved Voltage Transfer RatioC. Klumpner - University of Nottingham Achieving a compact and efficient design of power electronic converters is not a straightforward procedure: minimizing the size of the filter requires a higher switching frequency that causes additional switching losses that will require a larger heatsink and therefore will increase the equipment size. A matrix converter (MC) is known to have smaller switching losses than a Voltage Source Inverter (VSI) and therefore a greater potential for size reduction but has higher conduction losses. A two-stage Indirect MC (IMC) behaves similar to a MC but its losses follow a profile similar to a VSI. The two-stage hybrid IMC which is the latest development, offers a significant improvement in the voltage transfer ratio and immunity against unbalanced voltage supply but due to the additional intermediary stage, has even higher conduction losses than indirect MCs. This paper proposes a new control strategy for a hybrid IMC that will improve both the voltage transfer ratio and the efficiency of the converter at maximum output voltage by modulating the DC-link voltage across the inverter stage in order to eliminate the zero-voltage states and their corresponding commutations.
Document focus on / product (power):
(undefined)
Publication: 20-04-2007 Type: Scientific publication Language: English |
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308 download(s)
52. A Report on the Evaluation of PSIM and Some Other Possibilities for
Power Electronics Circuit SimulationH. Bülent Ertan - Middle East Technical University This article presents results comparion between PSIM and Matlab/Simulink
Document focus on / product (power):
(undefined)
Publication: 20-04-2007 Type: Scientific report Language: English |
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233 download(s)
53. The Design and Implementation of a Shunt Active Power Filter based on Source Current MeasurementEngin Ozdemir - Kocaeli University In this study, design and implementation of a shunt active power filter (APF) based on a simplified control method is given without load and filter current measurement. The proposed simplified control method is based on instantaneous reactive power theory (IRP) and requires only measuring the source currents to reduce the number of current sensors (CSs) required in the conventional control approach. The source currents are exactly in phase with the line voltages and approximately in sinusoidal waveform after reactive power and harmonic compensation. The proposed control technique has been tested under different load conditions using PowerSIM (PSIM) simulations and validated with a 10 kVA/380 V experimental prototype based on digital signal processor (DSP) TMS320F2812. Both simulation and experimental test results demonstrate that the proposed method is feasible in meeting the IEEE 519-1992 recommended harmonic standard limits.
Document focus on / product (power):
None (undefined)
Publication: 13-07-2007 Type: Scientific publication Language: English |
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4 download(s)
54. EDM Generator and Servo SystemFrancisco Ramirez - KAHO The goal is the realisation of an electronic device which is capable to produce sparks or electrical discharges in such a controlled manner that solid conductive materials can be shaped with. In order to do this in an efficient way, a number of physical parameters are to be kept under control. A generator is to provide an adequate electrical output pattern according to predetermined parameters. Next, measurements taken at the points where the electrical discharge happens provide the needed information in order to evaluate the course of the process which is then fed back to the generator. The result of this feedback is converted to a set of parameter corrections according to the new situation, and produces an adapted electrical output pattern. This design is to be implemented using modern power electronics devices and microcontrollers. As result of the realisation, a basic platform containing a generator and a feedback system (servo), different parameter settings will be tested with different materials. At the end of the project, the relevance of each parameter in the process will be checked out. This will be done on the basis of simple criteria like speed of movement, surface finishing and adjoining phenomena?s.
Document focus on / product (power):
None (undefined)
Publication: 13-07-2007 Type: Scientific publication Language: English |
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19 download(s)
55. Simulation and Analysis of a New Method of Control for a 2.5kW Permanent Magnet Generator connected to the Utility GridAndreas Kokkofitis - University of Durham The environment is directly damaged because of the enormous demand of energy which resulted to problems like climate change and global warming [1] . Bearing in mind that the proportion of electricity demand will increase rapidly in the next decades especially in the United Kingdom as industrial country [2] ; this project have used a small-scale wind power to generate electricity for the utility grid in order to reduce the consumption of fossil fuel.
Document focus on / product (power):
None (undefined)
Publication: 12/02/2008 Type: Scientific poster Language: English |
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61 download(s)
56. Nonlinear positioning control of a magnetoelectric linear drive
(summary report)Marcin Kowalski - Institute of Automatic Control, TU Lodz, Poland Zainteresowniae napêdem liniowym pojawi³o siê w podczas badañ laboratoryjnych przeprowadzanych w naszym instytucie. Za³o¿eniem które mia³ spe³niaæ ten napêd by³o zast¹pienie nim napêdu zaworów w rozrz¹dzie silnika spalinowego. Mikroprocesorowe sterownie tym napêdem nosi robocz¹ nazwê NCE (Non Camshaft Engine). Idea ruchu napêdu magnetoelektryczego jest bardzo zbli¿ona do ruchu, jaki wykonuje g³o?nik akustyczny w trakcie pracy. W omawianym napêdzie udoskonalono jednak sterownie ruchem oraz mo¿liwo?æ kontrolowania ruchu za pomoc¹ czujnika po³o¿enia. Ze wzglêdu na przeznaczenie napêdu zwiêkszono równie¿ warto?æ si³y, któr¹ napêd jest w stanie wytworzyæ Sterowanie odbywa siê poprzez mostek H z wykorzystaniem czujnika po³o¿enia napêdu..
Document focus on / product (power):
None (undefined)
Publication: 12/02/2008 Type: Scientific report Language: Polish |
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107 download(s)
57. A new balancing technique with power losses minimization in
Diode-Clamped Multilevel ConvertersM. Marchesoni - 1Università degli Studi di Genova A new PWM technique, capable of achieving a correct dc-link capacitor voltages balance in Diode-Clamped Multilevel inverters, within the limits defined by the theory, is presented. This result is obtained while decreasing the switching power losses when compared to techniques based on the use of redundant switching vectors. The combined use of such a technique and of additional chopper stages permits the correct operation of the converter in all operating conditions, maximizing the energy efficiency and decreasing the cost of the additional passive and active components. A detailed explanation of the new devised PWM technique and the main results, including the evaluation of the converter efficiency in the most significant operating points, are reported.
Document focus on / product (power):
None (undefined)
Publication: 12/02/2008 Type: Scientific publication Language: English |
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254 download(s)
58. WIND SPEED INFLUENCE OVER THE ENERGY QUALITY FOR A FIXED-SPEED WIND TURBINE WITH SCIG DIRECTLY CONNECTED TO THE GRIDNicolae Badea - Galati University, Romania The paper deal with problems regarding the electric energy?s quality of a fixed speed wind system with SCIG connected to the national distribution network. A numerical simulation in PSIM software is used in this case. There have been outlined the level and tension forms of the asynchronous generator, the active power injected in the grid, the reactive power consumed, the stability zone of the generator at wind speed variations and the currents variation when connecting the SCIG. Because the induction generator derives its magnetic excitation from the grid, the response of the turbine during a grid disturbance will be influenced by the extent to which the excitation is disrupted.
Document focus on / product (power):
None (undefined)
Publication: 09-04-2008 Type: Scientific publication Language: English |
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137 download(s)
59. A New Matrix Converter-Voltage Source Inverter Hybrid Arrangement for an Adjustable Speed-Open Winding Induction Motor Drive with Improved PerformanceC. Klumpner - University of Nottingham A matrix converter is a direct ac/ac power converter that can achieve sine wave in and out operation without the need of bulky passive components. With these features, it offers remarkable advantages over other similar solutions in applications requiring improved utility interaction and weight/volume reduction, but it has the disadvantage of a 0.866 Voltage Transfer Ratio (VTR) which means it cannot establish rated magnetic flux into standard AC motors. The performance is further affected when the voltage supply is unbalanced. This paper presents a new solution to increase the VTR and improve the system behaviour under unbalanced supply conditions by employing a new hybrid arrangement which is using an open winding induction motor fed by a Matrix Converter (MC) on one end and a Voltage Source Inverter (VSI) rated at only a small fraction of the supply voltage on the other end. Two control methods for this hybrid arrangement are proposed. Simulation results reveal the improved performance in terms of better VTR (equal to or potentially higher than one) under balanced and unbalanced supply voltage, higher power throughput relative to the overall power installed in the switches and improved efficiency.
Document focus on / product (power):
Matrix Converter (undefined)
Publication: 14-04-2008 Type: Scientific publication Language: English |
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105 download(s)
60. A New Three-Level Indirect Matrix Converter with Reduced Number of SwitchesC. Klumpner - University of Nottingham Abstract?Matrix converters are sine wave in/out forced commutated single-stage AC/AC direct frequency changers using a single bi-directional switch to connect any input to any output. Indirect two-stage matrix converters provide similar input and output performance with no passive component in the dc-link. The difference is that some of these topologies require less switching devices or are able to achieve multilevel output voltage capability. This paper proposes a new indirect matrix converter topology with a three-level phase to neutral output voltage capability and reduced number of devices. A new modulation scheme, simpler that a standard 3-level scheme, is proposed. The performance of the converter in terms of input and output waveform quality and power losses is evaluated through simulations and on an experimental prototype.
Document focus on / product (power):
Matrix Converter (undefined)
Publication: 14-04-2008 Type: Scientific publication Language: English |
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236 download(s)
61. A New Single-Stage Current Source Inverter for Photovoltaic and Fuel Cell Applications using Reverse Blocking IGBTsC. Klumpner - University of Nottingham Renewable energy sources such as photovoltaics (PVs) or fuel cells (FCs) are not fitted for direct power grid connection because they deliver DC voltage and current. This is why a power electronic interface is needed, consisting usually of a current-mode operated step-up DC/DC converter with/without isolation that boosts the voltage at a level that can be processed by a DC/AC inverter. This paper presents the implementation of a three-phase power electronic interface for PV/FCs that uses a single conversion stage approach based on a current source inverter (CSI) topology that would need only six reverse blocking IGBTs. In order to overcome the poor switching behavior of this device, a new way of implementing the CSI is proposed, which is proved to be more efficient. A new cost-effective CSI topology for multiple DC sources independently controlled is also proposed. The performance is assessed both in simulation and experimental.
Document focus on / product (power):
Matrix Converter (undefined)
Publication: 14-04-2008 Type: Scientific publication Language: English |
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65 download(s)
63. FENOMENE TRANZITORII SPECIFICE CUPLARII DIRECTE LA RETEA SI LA APARITIA UNUI SCURTCIRCUIT INTR-UN SISTEM EOLIAN CU SCIGNicolae Badea - Galati University, Romania Wind Energy System Transient simulation
Document focus on / product (power):
Wind energy (undefined)
Publication: 05-06-2008 Type: Scientific publication Language: Romanian |
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128 download(s)
64. SOFTWARE DE SIMULACION PSIMInigo Martinez de Alegria - Universidad del Pais Vasco/EHU General presentation of PSIM software in spanish and some laboratory exercises
Document focus on / product (power):
PSIM presentation and lab exer (undefined)
Publication: 30-06-2008 Type: PSIM presentation Language: Spanish |
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153 download(s)
65. Diseno de un convertidor DC-DC forwardInigo Martinez de Alegria - Universidad del Pais Vasco/EHU Design of a DC-Dc forward converter
Document focus on / product (power):
dc-dc switching converter (undefined)
Publication: 30-06-2008 Type: TP Language: Spanish |
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138 download(s)
66. Seguidor del punto de maxima potencia de un panel fotovoltaicoInigo Martinez de Alegria - Universidad del Pais Vasco/EHU Photovoltaic panel behavior at maximum power
Document focus on / product (power):
Photovoltaic panel (undefined)
Publication: 30-06-2008 Type: TP Language: Spanish |
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40 download(s)
67. Nadmodulacja w falowniku napiecia sterowanyym ukladem z modulatorami szerokosci i fazy impulsuTomasz BINKOWSKI - RZESZOW University of Technology Nadmodulacja w falowniku napiecia sterowanyym ukladem z modulatorami szerokosci i fazy impulsu
Document focus on / product (power):
overmodulation (undefined)
Publication: 01-07-2008 Type: Scientific publication Language: Polish |
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56 download(s)
69. Modelowanie ukladow przeksztaltnikowych wielopulsowych za pomoca programu PSIMJolanta Plewako - RZESZOW University of Technology Modelowanie ukladow przeksztaltnikowych wielopulsowych za pomoca programu PSIM
Document focus on / product (power):
(undefined)
Publication: 01-07-2008 Type: Scientific publication Language: Polish |
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38 download(s)
70. Organiczanie skladowych odksztalcenia w napieciach wyjsciowych trojfazowego falownika napiecia z zastosowaniem wnioskowania rozmytegoTomasz BINKOWSKI - RZESZOW University of Technology Organiczanie skladowych odksztalcenia w napieciach wyjsciowych trojfazowego falownika napiecia z zastosowaniem wnioskowania rozmytego
Document focus on / product (power):
(undefined)
Publication: 01-07-2008 Type: Scientific publication Language: Polish |
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155 download(s)
71. The Fuzzy System in voltage inverter control with a distortion reductionTomasz BINKOWSKI - RZESZOW University of Technology This paper describes the fuzzy logic system used as feedback of the module value of the output current space vector. this system affects the inverter's voltage amplification.
Document focus on / product (power):
Inverter (undefined)
Publication: 01-07-2008 Type: Scientific publication Language: English |
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120 download(s)
72. Energy Efficiency Improvement in AC/DC/AC
Diode-Clamped Multilevel Conversion SystemsM.Marchesoni - 1Università degli Studi di Genova Energy Efficiency Improvement in AC/DC/AC Diode-Clamped Multilevel Conversion Systems
Document focus on / product (power):
multilevel converter systems (undefined)
Publication: 02-07-2008 Type: Scientific publication Language: English |
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74 download(s)
73. Faults Analysis and Remedial Strategies in High
Power Neutral Point Clamped ConvertersM.Marchesoni - 1Università degli Studi di Genova Faults Analysis and Remedial Strategies in High Power Neutral Point Clamped Converters
Document focus on / product (power):
Power Neutral point clamped co (undefined)
Publication: 02-07-2008 Type: Scientific publication Language: English |
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69 download(s)
74. Control of rotor flux in CA tram drive during sudden braking operationAndrzej Debowski - Institute of Automatic Control, TU Lodz, Poland The paper focuses on the behavior of the rotor flux indirect control system for an inverter fed AC tram drive.
Document focus on / product (power):
Motor drive (undefined)
Publication: 01-09-2008 Type: Scientific publication Language: English |
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81 download(s)
78. DSP Control of Gyrator behaved switch mode converterBen-Yaakov - University of Ben Gurion Recent advances in DSP technology, such as those found in the TI C2000 family, make possible the practical exploration and eventual economical implementation of switch mode converters topologies that, until now, were conceived as a curiosity or at best, of theoretical value only. Applying the DSP capabilities, we explored in this study the characteristics and advantages of a double-bridge, Gyrator-behaved switch-mode DC-DC converter. This paper introduces the Gyrator behaved topology, proposes a user-friendly method for simulation-based DSP code development and debugging, and demonstrates the agreement between theoretical predictions and experimental results that were obtained on a laboratory prototype.
Document focus on / product (power):
DSP control of Switch Mode Con (undefined)
Publication: 22-09-2008 Type: Scientific publication Language: English |
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132 download(s)
79. Custom Power Systems and Software Platforms for Wind Farms under Voltage Dips SituationsAmaris Duarte - Universidad Carlos III de Madrid Wind generation is one of the most important renewable energy technologies. The most common type of wind turbine is the fixed-speed directly connected to the grid. Faults in the power system can originate the disconnection of wind farms. Grid codes appear. Custom power systems, such as D-STATCOM and DVR, are needed for helping old wind farms to withstand the sag. DFIG with the appropriate converter control can comply with grid codes. For simulating and testing the behaviour of DFIG, an adequately software platform is needed. Here, the comparison between Matlab SimPowerSystems Vs Matlab-PSIM co-simulation for solving the problem is studied. The PSIM-MATLAB co-simulation is found to be advantageous for analyzing, e.g., DFIG converters in dynamic simulations.
Document focus on / product (power):
Wind energy (undefined)
Publication: 25/11/2008 Type: Scientific publication Language: English |
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76 download(s)
80. RECTIFICADOR TRIFÁSICO EN PUENTE CONTROLADO CON CARGA RLEGabriel Garcerà - Universidad Politecnica de Valencia Se trata de realizar el análisis de un rectificador controlado en puente con una carga RLE, tal y como muestra el esquema PSIM 6.0 de la figura 1.
Document focus on / product (power):
Rectifier (undefined)
Publication: 01-12-2008 Type: TP Language: Spanish |
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113 download(s)
81. CONVERTIDOR DC-DC BUCKGabriel Garcerà - Universidad Politecnica de Valencia Se trata de realizar el análisis de un convertidor DC-DC Buck en lazo cerrado con las siguientes características: - Vi=10V-30V, VO=5V=cte. - fS=50kHz, VPP=1.8V (amplitud de la rampa PWM). - Rmin=1Ω (CC), Io-max=5A.
Document focus on / product (power):
dc-dc switching converter (undefined)
Publication: 01-12-2008 Type: TP Language: Spanish |
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58 download(s)
82. Control Modo Corriente de Pequeños Aerogeneradores Síncronos
de Imanes Permanentes con Baja Distorsión de CorrienteGabriel Garcerà - Universidad Politecnica de Valencia Este trabajo presenta el diseño y la simulación de un Rectificador Boost trifásico en modo de conducción discontinua, utilizado como etapa de entrada de un sistema de procesado de la energía procedente de aerogeneradores síncronos de imanes permanentes operando a velocidad variable.
Document focus on / product (power):
(undefined)
Publication: 01-12-2008 Type: Scientific publication Language: Spanish |
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90 download(s)
83. Evolution de la maquette de TP d?automatique pour la
commande en position d?un papillon motoriséMaussion Pascal - Enseeiht RESUME : Cet article présente une évolution de la maquette papillon d?admission d?air, utilisée comme support de formation à l?automatique. La réalisation d?une commande numérique implantée dans un microcontrôleur PIC et d?un amplificateur à découpage MLI, permet à la maquette de se rapprocher beaucoup de l?application industrielle réelle. Le boîtier de commande dédié à cette manipulation, permet sur cet actionneur embarqué, de tester différentes méthodes d?identification et de commande, principalement basées sur des démarches expérimentales de terrain, d?emploi simple et rapide. La manipulation est utilisée cette année dans la formation des élèves ingénieurs du département de Formation Génie Electrique-Automatique de l?ENSEEIHT (Ecole Supérieure d?Electrotechnique, d?Electronique, d?Informatique, d?Hydraulique et de Télécommunications de Toulouse).
Document focus on / product (power):
Motor drive (undefined)
Publication: 09-12-2008 Type: TP Language: French |
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79 download(s)
84. A computer aided learning module for digital control:
description, analysis, test and improvementMaussion Pascal - Enseeiht This paper presents a set of pedagogical solutions, their analysis, test and improvement, for an autonomous computer aided learning module. The content of the module is an introduction to digital control, based on a real (but simulated) industrial system: the automatic air conditioning system inside a modern car. The rather theoretical contents are presented without any mathematics to our non specialist students, according to a pedagogy of the inductive type. Our added value lies in the module structure, evaluation with a pre-test and a post-test, analysis and improvement through two successive years in 2006 and 2007. The student opinions are tested about utility and easiness of the contents, utility of the computer for training, usability of the computer in an autonomous way and motivation. The analysis brings to light less large positive opinions after the course than before. These results remain stable through the years. Consequently, educators and policy makes should be careful with e-learning dissemination.
Document focus on / product (power):
Motor drive (undefined)
Publication: 09-12-2008 Type: Scientific publication Language: English |
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158 download(s)
85. Recherche du maximum de puissance sur les générateurs
photovoltaïquesMaussion Pascal - Enseeiht Résumé : L'objectif de cet article est d'illustrer les principes utilisés pour faire fonctionner un générateur photovoltaïque à son maximum de puissance. Divers exemples d?implantations numérique ou analogique de cette fonction particulière sont présentés avec des résultats expérimentaux ou de simulations.
Document focus on / product (power):
Photovoltaic panel (undefined)
Publication: 09-12-2008 Type: Scientific publication Language: French |
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82 download(s)
86. Harmonic Modeling and Simulation of Small Photovoltaic Systems Connected to the LV Distribution NetworkCharis Demoulias - Aristotle University of Thessaloniki Since the penetration of photovoltaic (PV) systems in the Low Voltage (LV) distribution network is increasing, the need to register and model the contribution of these systems to the harmonic distortion of current and voltage waveforms is becoming an up-to-date issue. As PV systems incorporate power conditioning units, which are harmonic generating devices, they will have an influence on quality of supply, reliable operation of system equipment as well as component life expectancy.
Document focus on / product (power):
Photovoltaic panel (undefined)
Publication: 02-05-2009 Type: Scientific publication Language: English |
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83 download(s)
87. Modeling and Measurement of Small Photovoltaic Systems and Penetration ScenariosCharis Demoulias - Aristotle University of Thessaloniki The operation of Photovoltaic (PV) units connected to the system is characterized by several uncertainties due to the number of running units, the points where these units are sited, the exported power and the injection of harmonic currents. The objective of this paper is to investigate the penetration level of PV units in the low voltage (LV) network.
Document focus on / product (power):
Photovoltaic panel (undefined)
Publication: 05-05-2009 Type: Scientific publication Language: English |
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42 download(s)
88. Voltage Harmonic Distortion at Buses Feeding
Office Loads.Charis Demoulias - Aristotle University of Thessaloniki The total harmonic distortion of the phase-to-neutral voltage at buses feeding office load is investigated for various cable configurations, lengths and cross-sections. The investigation is carried out with a software model which was validated with approximate analytical expressions and measurements taken at a real installation. It is shown that the selection of a cable should based not only on its ampacity and allowable voltage drop but its configuration should be taken into account in order to avoid excessive voltage harmonic distortion.
Document focus on / product (power):
Harmonic distorsion (undefined)
Publication: 05-05-2009 Type: Scientific publication Language: English |
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64 download(s)
89. PSIM / TP1
Courants de court circuitGerard Ollé - Lycée.T. Déodat de Séverac Résumé : On utilise le logiciel de simulation de circuits électriques PSIM pour analyser les formes d'ondes et les amplitudes de courants, lors d?un court-circuit « franc » aux bornes d?un récepteur, monophasé puis triphasé, alimenté par un réseau BT industriel. La saisie du schéma à simuler et des paramètres de simulation s'effectuent dans le module SimCAD du logiciel. Les résultats de la simulation sont accessibles dans le module SimView : visualisation de graphes, mesurage de grandeurs, ...
Document focus on / product (power):
Electrical Network (undefined)
Publication: 05-05-2009 Type: TP Language: French |
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81 download(s)
90. PSIM / TP2
Réseau triphasé et moteur asynchroneGerard Ollé - Lycée.T. Déodat de Séverac On utilise le logiciel de simulation de circuits électriques PSIM pour analyser les grandeurs électriques (tension, courant, puissances) en amont d?un moteur asynchrone connecté en direct à un réseau triphasé.
Document focus on / product (power):
Electrical Network (undefined)
Publication: 05-05-2009 Type: TP Language: French |
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66 download(s)
91. PSIM / TP3
Problème de l'harmonique 3
dans le courant de neutreGerard Ollé - Lycée.T. Déodat de Séverac Contexte de l?application et schéma de simulation: Dans un immeuble à usage tertiaire, un départ triphasé 400 V avec neutre distribué alimente le réseau informatique. Les récepteurs (PC, imprimante, ....), branchés entre phase et neutre, sont répartis sur les trois phases globalement équilibrées. Chaque appareil comporte à l'entrée un redresseur à diodes avec filtrage capacitif : le schéma équivalent de la charge non linéaire est, pour chaque phase, un circuit pont de diodes-condensateur-résistance.
Document focus on / product (power):
Harmonic distorsion (undefined)
Publication: 05-05-2009 Type: TP Language: French |
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70 download(s)
92. PSIM / TP4
Atténuation des harmoniques
par filtrage passifGerard Ollé - Lycée.T. Déodat de Séverac On utilise le logiciel de simulation de circuits électriques PSIM pour analyser les formes d'onde du courant absorbé par un variateur monophasé qui alimente un moteur asynchrone. On s'intéresse particulièrement au taux de distorsion harmonique de ce courant et aux remèdes utilisés pour l'améliorer.
Document focus on / product (power):
Harmonic distorsion (undefined)
Publication: 05-05-2009 Type: TP Language: French |
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81 download(s)
93. PSIM / TP5
Compensation de puissance réactive
et charge non linéaireGerard Ollé - Lycée.T. Déodat de Séverac Résumé : On utilise le logiciel de simulation de circuits électriques PSIM pour analyser le courant absorbé par un variateur de vitesse associé à un moteur à courant continu et pour mesurer les puissances active et réactive absorbées. On étudie ensuite l?influence d?un condensateur de compensation de puissance réactive sur les courants harmoniques générés par le récepteur non linéaire (variateur).
Document focus on / product (power):
Electrical Network (undefined)
Publication: 05-05-2009 Type: TP Language: French |
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106 download(s)
94. PSIM / TP6
Etude de la structure de puissance d?un
variateur pour moteur asynchroneGerard Ollé - Lycée.T. Déodat de Séverac Objectifs de l'activité : On utilise le logiciel PSIM pour analyser le fonctionnement d?un onduleur de tension à commande MLI (modulation de largeur d?impulsions). Le principe d?une commande MLI est étudiée sur une structure simple (onduleur monophasé 1/2 pont), puis sur un onduleur triphasé. On termine par la simulation de la structure de puissance complète d?un variateur de vitesse pour moteur asynchrone triphasé (redresseur + onduleur).
Document focus on / product (power):
Variateur de puissance (undefined)
Publication: 05-05-2009 Type: TP Language: French |
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104 download(s)
95. Using PSIM and Matlab cosimulation to design stand-alone DC power plant supplied by an alternative energy integrated modular systemSimone Castellan - University of Trieste In this paper a DC power plant for base transceiver station power supply is investigated. The supply system employs clean alternative energy sources, namely photovoltaic (PV) modules, wind turbines, a fuel cell as backup generator and a storage battery bank. A detailed description is made and experimental data are shown of a prototype system where the PV modules are directly connected to the DC bus and an on/off strategy is used to control the power flow to the battery bank and to the load. The system is modeled and the model is validated comparing simulation results with experimental data. It is then investigated the possibility to add a DC-DC converter for optimized control of the energy generated by the PV strings. Simulation results show that the addition of a DC-DC converter between the PV modules and the DC bus brings a remarkable increase in the produced energy.
Document focus on / product (power):
Power supply (undefined)
Publication: 06-12-2009 Type: Scientific publication Language: English |
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125 download(s)
96. Modélisation et commande d’une éolienne équipée d’une génératrice asynchrone. Réalisation d’un simulateur pédagogique sous PsimJM ROUSSEL - IUT de l'Indre Université Orléans Cet article présente un projet destiné à des étudiants de deuxième année DUT GEII à finalité « énergie renouvelable ». Durant ce projet, ces derniers doivent effectuer la modélisation et la commande d’une éolienne de forte puissance à génératrice asynchrone connectée au réseau et l’implanter dans l’environnement PSIM. Après une présentation générale de la chaîne de conversion éolienne, l’article détaille la modélisation d’une turbine et sa commande. Le simulateur proposé est ensuite expliqué, ainsi que les simulations réalisées pour évaluer ses performances. Mots clés : énergie éolienne, turbine éolienne, génératrice asynchrone, régulation pitch, optislip, connexion au réseau
Document focus on / product (power):
(undefined)
Publication: 06-06-2009 Type: Scientific publication Language: French |
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15 download(s)
97. Badania symulacyjne szeregowego kompensatora statycznego
SSSC w programie PSIMJanina Rzasa - RZESZOW University of Technology Streszczenie. Artyku³ dotyczy analizy pracy szeregowego kompensatora statycznego SSSC i jego roli w regulowaniu przesy³em mocy czynnej w linii elektroenergetycznej. Przeanalizowano zastosowanie siedmiopoziomowego falownika napiecia jako synchronicznego zród³a napiecia w szeregowym kompensatorze statycznym. Wykonane w programie PSIM badania symulacyjne pozwoli³y na wyciagniecie wniosków odnoszacych sie do stanu ustalonego pracy systemu elektroenergetycznego i na porównanie moliwosci przesy³owych linii bez kompensacji szeregowej i z jej zastosowaniem. Abstract. The article deals with analysis of work of Static Synchronous Series Compensator SSSC and its role in control of real power flow in supply network. Application of seventh level voltage inverter as a synchronous voltage source in static series compensator was analysed. Simulation research were realized in PSIM program. Comparison of functioning the network without and with series compensation could be carry out with obtained simulation results. (Simulation research of Static Synchronous Series Compensator SSSC with use of PSIM program).
Document focus on / product (power):
series compensator (undefined)
Publication: 23/06/2010 Type: Scientific publication Language: Polish |
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7 download(s)
98. Badania symulacyjne zmienno impedancyjnych
kompensatorów szeregowychJanina Rzasa - RZESZOW University of Technology Streszczenie. W ramach wstepnych badan nad zagadnieniem zwiazanym z wykorzystaniem urzadzen FACTS w sterowaniu rozp³ywem mocy czynnej w systemie elektroenergetycznym wykonane zosta³y w programie PSIM modele symulacyjne uk³adów energoelektronicznych uywanych w reaktancyjnych kompensatorach szeregowych typu: TSSC, GCSC i TCSC. Niniejszy artyku³ prezentuje wyniki badan symulacyjnych tych uk³adów. Abstract. The article presents the results of simulation research of power electronic components of variable impedance series compensators working in FACTS technology. Models of tested schemes were prepared with use of PSIM program. There were the introductory studies involved in control of power flow. (Simulation research of variable impedance type series compensator )
Document focus on / product (power):
series compensator (undefined)
Publication: 23/06/2010 Type: Scientific publication Language: Polish |
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19 download(s)
99. Modeling of multipulse converters with PSIM softwareJanina Rzasa - RZESZOW University of Technology Abstract - Paper presents example of PSIM software application for modeling of multipulse power converters. PSIM is simulation software designed for power electronics, motor control and dynamic system simulation and analysis. With its userfriendly interface, its simulation speed, its capability of simulating any type of power converters and control circuits, PSIM is ideal for system-level simulation, control loop design, and motor drive system studies. The 12D and 18D power converters supplied by transformers have been modeled by using ready-made element library as well as by modifying it to be adapted for simulation of particular systems.
Document focus on / product (power):
multipulse converter (undefined)
Publication: 23/06/2010 Type: Scientific publication Language: English |
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33 download(s)
100. Modeling power electronics subcircuits of FACTS devices
in PSIM software environmentJanina Rzasa - RZESZOW University of Technology Abstract — In the article, FACTS-type power electronics devices used to improve flexibility of electric power transmission systems are presented. Selected models of systems operating in static shunt compensation mode are presented. This work is the first stage of research, focused on power electronics subcircuits, so destined for analysis of power electronics converters PSIM software was choosen.
Document focus on / product (power):
FACTS devices modelling (undefined)
Publication: 23/06/2010 Type: Scientific publication Language: English |
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17 download(s)
101. Herramienta CAD para el diseño eficiente de reguladores de convertidores de potenciaA. Barrado, A. Lázaro, C. Lucena, C. Martínez, I. Quesada, J. Lourido, P. Zumel, V. Valdivia - Universidad Carlos III de Madrid En la actualidad, las herramientas CAD poseen un amplio uso en el campo de la electrónica de potencia. Los simuladores de circuitos de potencia, así como otras herramientas dedicadas, permiten reducir los tiempos de desarrollo. En este artículo se presenta una novedosa y eficiente herramienta CAD para el diseño de reguladores de electrónica de potencia. Así mismo, se incorporan nuevos conceptos y algoritmos orientados a mejorar las prestaciones del lazo de control a través del diseño del regulador. La herramienta CAD presentada permite el diseño, de forma sencilla, de convertidores PWM regulados a partir de topologías convencionales o desde la respuesta en frecuencia obtenida mediante simuladores comerciales. (PSIM Smart Control)
Document focus on / product (power):
Power Electronics Compensator ()
Publication: 2010 Type: Scientific publication Language: Spanish |
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27 download(s)
102. Efficient CAD Tool for Power Electronics Compensator DesignA. Barrado, A. Lázaro, C. Lucena, C. Martínez, I. Quesada, J. Lourido, P. Zumel, V. Valdivia - Universidad Carlos III de Madrid Nowadays CAD tools are widely used in power electronics. Power circuit simulators as well as some other dedicated tools allow reducing developing times. In this paper a new and efficient CAD tool for power electronics compensator design is presented. This tool incorporates some new concepts and algorithms oriented to obtain the optimal loop performance through the compensator design. The CAD tool allows easy designing of PWM regulated converters since it provides an easy and friendly interface tool to design the compensator; both from the conventional topologies and the small signal AC analysis of power circuit simulators. (PSIM Smart Control)
Document focus on / product (power):
Power Electronics Compensator ()
Publication: 2010 Type: Scientific publication Language: English |
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no file to download *
103. A Novel Bridgeless Single-Stage Half-Bridge AC/DC ConverterJ. Lai, W. Choi, W. Yu - Virginia Polytechnic Institute and State University This paper proposes a new bridgeless single-stage half-bridge ac-dc converter. The proposed converter integrates the operation of the bridgeless power factor correction (PFC) boost rectifier and the asymmetrical pulse-width modulation (APWM) half-bridge dc-dc converter. The proposed converter provides high power factor and direct power conversion from the line voltage to an isolated dc output voltage without using the fullbridge diode rectifier. Conduction losses are lowered with a simple circuit structure. Switching losses are also reduced by achieving zero-voltage switching (ZVS) of the power switches. The effectiveness of the proposed converter is verified on a 250 W (48 V/5.2 A) experimental prototype.
Document focus on / product (power):
Publication: 25-02-2010 Type: IEEE publication Language: English |
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no file to download *
105. Electrical Power Distribution System (HV270DC), for Application in More Electric AircraftB. Delicado, C. Fernandez, D. Izquierdo, F. Cerro, R. Azcona - EADS In the new designs of military aircraft and unmanned aircraft there is a clear trend towards increasing demand of electrical power. This fact is mainly due to the replacement of mechanical, pneumatic and hydraulic equipments by partially or completely electrical systems. Generally, use of electrical power onboard is continuously increasing within the areas of communications, surveillance and general systems, such as: radar, cooling, landing gear or actuators systems. To cope with this growing demand for electric power, new levels of voltage (270 VDC), architectures and power electronics devices are being applied to the onboard electrical power distribution systems. The purpose of this paper is to present and describe the technological project HV270DC. In this project, one Electrical Power Distribution System (EPDS), applicable to the more electric aircrafts, has been developed. This system has been integrated by EADS in order to study the benefits and possible problems or risks that affect this kind of power distribution systems, in comparison with conventional distribution systems.
Document focus on / product (power):
None ( )
Publication: 25-02-2010 Type: IEEE publication Language: English |
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no file to download *
106. A Low-Cost, Digitally-Controlled Charger for Plug-In Hybrid Electric VehiclesG. Su, L. Tang - Oak Ridge National Laboratory, U.S.A In this paper, a low-cost onboard charger for plugin hybrid electric vehicles (HEVs) is presented and verified experimentally. The idea is to utilize the already available main traction and auxiliary motors and associated power electronics systems of an HEV to construct the charger circuit instead of building a standalone charger. Compared to the latter, it enables significant cost, weight, and volume reductions. The topology was verified by modeling and experimental results on a 14 kW prototype.
Document focus on / product (power):
Power converters (undefined)
Publication: 20-09-2009 Type: IEEE publication Language: English |
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no file to download *
107. Analysis of a High Performance Voltage Regulator with Non-Linear Multi-Mode Control: Bandwidth and Large Transient ResponseP. K. Jain, S. Pan - Queen´s University, Canada A novel digital adaptive voltage positioning (digital AVP) technique with dual-voltage-loop was proposed in [21]. Good transient performance had been achieved without using complicated control. In this paper, a small signal model is proposed for this mixed-signal digital controller. It is revealed by this small signal model that the inner current loop is in analog and the voltage loop is in digital, thus the controller can benefit from both: having valuable features of digital control but without limitations such as limit cycle. On the other hand, dynamic behavior of the voltage regulator with this digital AVP controller under large load transient is analyzed. Decoupling between bandwidth and large transient response with this novel digital AVP controller is verified.
Document focus on / product (power):
Power converters (undefined)
Publication: 21-02-2010 Type: IEEE publication Language: English |
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no file to download *
108. Black-Box Modeling of Three Phase Voltage Source Inverters Based on Transient Response AnalysisA. Barrado, A. Lázaro, C. Fernandez, M. Sanz, P. Zumel, V. Valdivia - Universidad Carlos III de Madrid Nowadays, black-box behavioral models of power converters are becoming interesting for system-level analysis. These models can be used to evaluate the response of power electronics systems which are composed of commercial converters, since they can be fully parameterized by analyzing the actual converter response. First black-box models of power converters have been recently proposed, but all of them are oriented to DC-DC converters. However, three-phase voltage source inverters are usually applied in current power electronics-based systems, such as aircraft power systems, and a black-box modeling method of this kind of converters has not yet been proposed. In this paper a large-signal black-box modeling method of three-phase voltage source inverters is proposed. The identification of the model is based on the analysis of the converter transient response, which is obtained by means of a set of simple experiments and easily usable fitting algorithms. An experimental validation of the proposed method has been carried out on a 5 kW actual inverter applied on an aircraft power system test bench.
Document focus on / product (power):
Three Phase Voltage Source Inverters (undefined)
Publication: 21-02-2010 Type: IEEE publication Language: English |
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no file to download *
109. Black-Box Modeling of DC-DC Converters Based on Transient Response Analysis and Parametric Identification MethodsA. Barrado, A. Lázaro, C. Fernandez, M. Sanz, P. Zumel, V. Valdivia - Universidad Carlos III de Madrid Today, “black-box” behavioral models of power converters are becoming interesting for system-level analysis. These models can be used to evaluate the response of power electronics systems which are composed of commercial converters, since they can be fully parameterized by analyzing the actual converter response. In this paper a new identification method of “black box” models for DC-DC converters is presented. This method is based on the analysis of the step transient response of the converter, which is obtained by means of simple experiments. The identification of the model is carried out using well established fitting algorithms, which can be applied using commercial tools.
Document focus on / product (power):
DC-DC Converters (undefined)
Publication: 21-02-2010 Type: IEEE publication Language: English |
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no file to download *
110. A Novel Adaptive Algorithm for Rotor-Flux and Slip Estimation of Sensorless Field-Oriented Induction Machine DrivesB. Guan, L. Xu - Ohio State University, U.S.A A novel adaptive algorithm is presented for the rotor-flux and slip estimation of sensorless field-oriented induction machine drives. A Model Reference Adaptive System (MRAS) based scheme is employed to achieve parameter adaption and accurate estimation. The reference model of MRAS is designed to be insensitive to machine parameters. By utilizing the proposed scheme, the effect of the critical parameter variation on estimation in FOC can be removed. The validity of the adaptive observer has been verified by the initial research results.
Document focus on / product (power):
(undefined)
Publication: 20-09-2009 Type: IEEE publication Language: English |
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no file to download *
111. Torque Impulse for Experimental Modal Analysis in Transmitted Vibration Study of Engine-generatorsE. Ayana, S. K. Cheah, S. Seidlitz - Cummins Power Generation, U.S.A N. Mohan - University of Minnesota, U.S.A Experimental modal analysis is used to measure the dynamic characteristics of a structure. Traditionally, excitation is provided with either a shaker or an impulse hammer. An alternative approach is to use power electronics for powering the generator; generating a torque impulse. This torque excitation replicates much of the engine’s excitation, emphasizing the vibrational modes that are assorted with the generator set’s transmitted vibration. Basic system setup for modal analysis using torque impulse, comparison with conventional impulse hammer test, and illustrations of some of the flexibilities inherent in torque impact testing are included.
Document focus on / product (power):
(undefined)
Publication: 21-02-2010 Type: IEEE publication Language: English |
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no file to download *
112. An Ultracapacitor-based Energy Storage System Design for High Power Motor Drive with Dynamic Real Power Compensation and Harmonic CancellationH. Li, L. Liu - Florida State University, U.S.A J. Kim - Pusan National University, South Korea This paper presented an ultracapacitor (UC)- based energy storage system (ESS) design for high power motor drive application. The ESS is cascaded with three-phase multilevel motor drive inverter to provide not only harmonic cancellation but also real power compensation during transients and steady states. An active power control strategy was developed to implement desired power flow modes during acceleration, deceleration, and steady states by allocating appropriate real power between main inverter cell and ESS inverter cells. The proposed control strategy also allows the smooth power transition between operating modes. In addition, an auxiliary control scheme was developed to coordinate the active power control and voltage balancing of UC. Finally, the developed control is integrated with the motor drive vector control to improve the motor drive performance. Both simulation and experimental results were presented to verify the validity of proposed ESS design.
Document focus on / product (power):
Multi-Level Inverter (undefined)
Publication: 20-09-2009 Type: IEEE publication Language: English |
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no file to download *
113. A Novel Five-level Three-phase PWM Rectifier using 12 SwitchesJ. Itoh, T. Adachi, Y. Noge - Nagaoka University of Technology, Japan This paper proposes a new circuit topology for a multilevel PWM rectifier. The proposed circuit combines a diode clamp type topology with a flying capacitor type topology. As a result, the proposed circuit uses only 12 switches, despite the use of a five-level three-phase PWM rectifier. Further, the proposed circuit can obtain good performance as same as to a conventional multilevel circuit. This paper describes the features of the proposed topology; the control strategy and loss analysis using circuit simulation. In addition, the basic operation of the proposed method is confirmed by simulation and experimental results. The proposed converter achieved THD (Total harmonic distortion) of 3.4% for the input current and efficiency of 97.4% for a 1 kW class experimental setup.
Document focus on / product (power):
Multi-Level Inverter (undefined)
Publication: 20-09-2009 Type: IEEE publication Language: English |
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no file to download *
114. A Simplified Three Phase Three-level Zero-Current-Transition Active Neutral-Point-Clamped Converter with Three Auxiliary SwitchesDushan Boroyevich - Virginia Polytechnic Institute and State Universit J. Li, J. Liu - Jiaotong University, China A novel three-level zero-current-transition active neutral-point-clamped inverter is presented in this paper. The proposed soft-switching topology employs only one auxiliary switch, one LC resonant tank to assist the main switching devices in one phase leg. The zero-current turning-off of all the main and auxiliary switches are achieved with voltage stress of all switching devices are clamped to half of the DC-link voltage. Meanwhile, The turning-on losses of switches and reverse recovery losses of diodes are reduced. The control scheme is simple and no additional sensor is needed and no need modification to the normal PWM strategy. The operation principles are analyzed and simulation result verify the analysis.
Document focus on / product (power):
Multi-Level Inverter (undefined)
Publication: 21-02-2010 Type: IEEE publication Language: English |
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no file to download *
115. Power Quality Improvement at Medium-Voltage Grids Using Hexagram Active Power FilterJ. Wen, K. Smedley, L. Zhou - University of California at Irvine, U.S.A A new Hexagram Active Power Filter (APF) is proposed for harmonics elimination at medium-voltage grids. The new converter is composed of six interconnected threephase standard two-level voltage source converter modules with advantages including modular structure with easy construction and maintenance, no voltage unbalance problem, reduced voltage stress, symmetrical structure with automatic and equal voltage and current sharing, and easy control with welldeveloped two-level control techniques, etc. In this paper, One- Cycle Control – an excellent control scheme for two-level converters is extended to realize the control of the Hexagram converter for active power filter function. Both simulation and experiment have been conducted and verified the proposed converter and proposed control scheme.
Document focus on / product (power):
Power converters (undefined)
Publication: 21-02-2010 Type: IEEE publication Language: English |
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no file to download *
116. Maximum Power Point Tracking Method for PV Array under Partially Shaded ConditionB.K. Lee, C.Y. Won, D.Y. Jung, Y.H. Ji - Sungkyunkwan University, South Korea J.W. Kim - Samsung Electromechanics Co. Ltd., South Korea Conventional popular MPPT methods are effective under uniform solar irradiance. However, under partially shaded conditions, these MPPTs can fail to track the real MPP because of the multiple local maxima which can be existed on PV characteristic curve under partially shaded condition. In spite of some researchers have worked on real MPP tracking under partial shading conditions, the methods have some drawbacks with complexity and requirement of additional circuit, etc. In this paper, a novel MPPT method that is capable of tracking the real MPP under partially shaded conditions is proposed. The performahce of real MPP is verified by simulation and experimental results.
Document focus on / product (power):
Photovoltaic (undefined)
Publication: 20-09-2009 Type: IEEE publication Language: English |
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no file to download *
117. A Minimum Power-Processing Stage Fuel Cell Energy System Based on A Boost-Inverter with A Bi-Directional Back-Up Battery StorageM. Jang, V. Agelidis - University of Sydney NSW, Australia When low-voltage unregulated fuel cell (FC) output is conditioned to generate AC power, two stages are required: a boost stage and an inversion one. In this paper, the boost-inverter topology that achieves both boosting and inversion functions in a single-stage is used to develop an FC-based energy system which offers high conversion efficiency, low-cost and compactness. The proposed system incorporates additional battery-based energy storage and a DC-DC bi-directional converter to support instantaneous load changes. The output voltage of the boostinverter is voltage-mode controlled and the DC-DC bidirectional converter is current-mode controlled. The load lowfrequency current ripple is supplied by the battery which minimizes the effects of such ripple being drawn directly from the FC itself. Analysis, simulation and experimental results are presented to confirm the operational performance of the proposed system.
Document focus on / product (power):
Fuel Cell (undefined)
Publication: 21-02-2010 Type: IEEE publication Language: English |
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no file to download *
118. Photovoltaic Parallel Resonant DC-link Soft Switching Inverter using Hysteresis Current ControlY. Jung - Namseoul University, South Korea Y. Kim - Sungkyunkwan University, South Korea This paper proposes a photovoltaic parallel resonant dc-link soft switching inverter using hysteresis current control. The proposed system includes a dc-link switch for soft switching. When the dc-link switch is turned off, the inverter switches are turned on and off with zero voltage switching using hysteresis current controller. So, all of the switches in the proposed inverter are turned on and off with soft switching. As a result, the proposed circuit can reduce the switching loss. The proposed inverter is verified through the theoretical analysis, simulation and experiment.
Document focus on / product (power):
Photovoltaic (undefined)
Publication: 21-02-2010 Type: IEEE publication Language: English |
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no file to download *
119. Adaptive Nonlinear Maximum Power Point Tracker for a WECS Based on Permanent Magnet Synchronous Generator Fed by a Matrix ConverterA. Bakhshai, A. Safaee, M. Pahlevaninezhad, P. Jain, S. Eren - Queen´s University, Canada This paper presents a new control method to track the maximum power point for a Wind Energy Conversion System (WECS). This WECS is based on a permanent magnet synchronous generator (PMSG) fed by a matrix converter. Since the mechanical power generated by the wind turbine is a function of its shaft speed at a given wind velocity, the proposed controller provides the desired voltage at the output of the matrix converter so as to control the generator speed. This controller is based on the nonlinear adaptive backstepping approach which is well suited for this system. This method is able to effectively accommodate the effects of system uncertainties. Theoretical analysis and simulation results verify the feasibility and performance of the proposed approach.
Document focus on / product (power):
Wind energy (undefined)
Publication: 20-09-2009 Type: IEEE publication Language: English |
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no file to download *
120. A Hybrid Wind-Solar Energy System: A New Rectifier Stage TopologyA. Bakhshai, J. Hui, P. Jain - Queen´s University, Canada Environmentally friendly solutions are becoming more prominent than ever as a result of concern regarding the state of our deteriorating planet. This paper presents a new system configuration of the front-end rectifier stage for a hybrid wind/photovoltaic energy system. This configuration allows the two sources to supply the load separately or simultaneously depending on the availability of the energy sources. The inherent nature of this Cuk-SEPIC fused converter, additional input filters are not necessary to filter out high frequency harmonics. Harmonic content is detrimental for the generator lifespan, heating issues, and efficiency. The fused multiinput rectifier stage also allows Maximum Power Point Tracking (MPPT) to be used to extract maximum power from the wind and sun when it is available. An adaptive MPPT algorithm will be used for the wind system and a standard perturb and observe method will be used for the PV system. Operational analysis of the proposed system will be discussed in this paper. Simulation results are given to highlight the merits of the proposed circuit.
Document focus on / product (power):
Wind energy (undefined)
Publication: 21-02-2010 Type: IEEE publication Language: English |
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no file to download *
121. A Phase-Modulated High-Frequency Isolated Dual LCL DC/AC ConverterA. Bhat, X. Li - University of Victoria, Canada A phase-modulated high-frequency isolate DC/AC converter is proposed for a PMSG-based grid-connected wind generation application. The converter includes two fullbridge HF LCL-type resonant inverters working at fixed duty cycle. The power control is realized by means of the phase shift between the two bridges. With the LCL-type resonant tank, zero-voltage-switching is achieved for all switches for the whole power range. With the phase shift modulated sinusoidally, a 120 Hz rectified output current is obtained, which is unfolded and fed to the single-phase utility line. The analysis is verified with computer simulation results. Experimental data based on a 500 W prototype circuit is included for validation purpose.
Document focus on / product (power):
Resonant Converter (undefined)
Publication: 20-09-2009 Type: IEEE publication Language: English |
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no file to download *
122. Grid-Connected Voltage Source Inverter for Renewable Energy Conversion System with Sensorless Current ControlA. Bakhshai, M. Pahlevaninezhad, P. Jain, S. Eren - Queen´s University, Canada This paper introduces a novel sensorless control approach for a three-phase grid-connected voltage source inverter utilized in a renewable energy conversion system. Renewable energy conversion applications are beginning to require a faster response to the changing power demands of the grid. Therefore, the methods that are based on conventional power theory can no longer comply with the speed requirements because they require low-pass filters in order to generate the power feedback. The closed loop control is based on an instantaneous power approach using real-time values to calculate the reference currents. Thus, the control system has fast tracking of power references compared to conventional methods. In addition, the proposed approach uses a slidingmode observer to estimate the inverter output current as well as the grid current. This sensorless approach makes the control system robust against measurement noise and phase error, and it reduces system costs. The state-of-the-art PR controller is employed in order to provide zero steady state error for the inverter currents as well as disturbance rejection. Theoretical analysis and simulation results are provided in order to demonstrate the validity and effectiveness of the proposed control method.
Document focus on / product (power):
Voltage Source Inverter (undefined)
Publication: 21-02-2010 Type: IEEE publication Language: English |
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no file to download *
123. High Performance Voltage Regulation of Current Source InvertersB.P. McGrath, , D.G. Holmes, S.A.S. Grogan - Monash University, Australia Current source inverters offer advantages of voltage boost, short circuit protection, reduced EMI and direct regeneration. While CSI control strategies are less developed than for a VSI, the topologies are functional duals and have much in common in a control sense. In particular, since CSI voltage regulation is the dual of VSI current regulation, current regulation control strategies for a VSI can be readily implemented as equivalent voltage control strategies for a CSI. This paper shows how a high performance PI stationary frame and P+Resonant CSI voltage regulator can be analytically designed and optimised, while in particular taking into account the second order response of a CSI filter/load combination.
Document focus on / product (power):
Current Source Inverters (undefined)
Publication: 21-02-2010 Type: IEEE publication Language: English |
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no file to download *
124. Control Strategy for a Buck-boost Type Direct Interface Converter Using an Indirect Matrix Converter with an Active SnubberJ. Itoh, K. Kato - Nagaoka University of Technology, Japan This paper proposes a novel control method for an interface converter that is using an indirect matrix converter (IMC) with a DC power supply. The proposed converter is constructed based on an indirect matrix converter and a converter that combined the function of a boost type converter and a step-down type converter. The proposed converter connects an active snubber to the DC link part of IMC along with a boost type converter. The voltage transfer ratio from the AC power sources to the load can be improved by this active snubber. In addition, the proposed control method able to control the power distribution ratio and the output voltage at a same time. The basic operation of the proposed method has confirmed by simulation and experimental results.
Document focus on / product (power):
Matrix Converter (undefined)
Publication: 21-02-2010 Type: IEEE publication Language: English |
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17 download(s)
125. Modeling and Evaluation of Diode Reverse Recovery
in Discrete-Transition SimulatorsBen-Yaakov - University of Ben Gurion Discrete transition simulators usually do not apply full physical models of devices and as a result, they are incapable of showing parasitic processes such as diode reverse recovery. The main objective of this study was to develop a behavioral model of diode reverse recovery that can be implemented in these simulators. The proposed model is based on the lumped charge control concept. It can be easily extracted from a simple measurement and it does not require heavy computational resources. The model was tested within the PSIM platform and was verified experimentally for various turn-off conditions. Model application is exemplified by investigating a lossless snubber of a three-phase buck-type rectifier.
Document focus on / product (power):
Diode Modelling (undefined)
Publication: 02/11/2010 Type: Scientific publication Language: English |
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12 download(s)
126. Zeroing Transformer's DC Current in Resonant Converters
with No Series CapacitorsBen-Yaakov - University of Ben Gurion DC current unbalance in the windings of a transformer may initiate a runaway process and ultimately drive the transformer into saturation. Such a situation could arise in a transformer coupled resonant converter that does not include a series capacitor. This issue was explored in this study theoretically, by simulation and experimentally. A method is proposed for automatically adjusting the transformer’s DC current to zero by correcting the asymmetry of the drive. This balancing control is facilitated by a signal obtained from a DC/AC current sensor which senses the transformer’s primary and secondary currents such that they cancel each other for the no DC case. The proposed method was tested on a self oscillating, parallel loaded DC-DC resonant converter of 12V input voltage 500V output voltage and 700W power level. The proposed approach allows the design of resonant converters without DC decoupling capacitors which could lead to a significant cost and size reduction.
Document focus on / product (power):
Resonant Converter (undefined)
Publication: 02/11/2010 Type: Scientific publication Language: English |
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13 download(s)
127. Notch Filtering-Based Stabilization of PFC AC-DC
Pre-regulatorsORABI Mohamed - SOUTH VALLEY University Power factor correction converters are nonlinear power electronics circuits used as AC-DC power supplies and due to their nonlinearity they exhibit nonlinear phenomena such as sub-harmonic oscillations and chaotic regimes. These undesirable behaviors increase the total harmonic distortion and therefore can jeopardize enormously the system performances. In this paper, a notch filter based controller is added to the voltage control loop to stabilize a power factor correction AC-DC boost pre-regulator. This control technique is simple and it introduces many advantages to the most and widely used average current mode control through widening the stability domain of the system and being its experimental implementation possible by using standard devices such as OAs and passive elements. Index Terms—Boost PFC AC-DC, Time Delay Feedback Control (TDFC), Notch filtering, Instability, Sub-harmonics, Chaos.
Document focus on / product (power):
PFC (undefined)
Publication: 10/11/2010 Type: Scientific publication Language: English |
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13 download(s)
128. A Harmonic Balance-Based Method for Predicting
Line Frequency Instabilities in PFC ConvertersORABI Mohamed - SOUTH VALLEY University Power Factor Correction (PFC) AC-DC converters are well known nonlinear power electronics systems to exhibit instabilities in the form of period doubling and sub-harmonics oscillations at the line period. This undesirable behavior increases the total harmonic distortion (THD) and therefore can deteriorate enormously the system functioning by decreasing the Power Factor (PF). In this communication, stability analysis for a boost PFC AC-DC converter is presented. A Harmonic Balance (HB) approach is used for studying the dynamics of the system. It is found that a singularity in the first order harmonic component model is the main responsible of the first period doubling. This result is then used for analyzing the stability of the complete system. Practical and accurate analytical expressions for stability boundaries are presented.
Document focus on / product (power):
PFC (undefined)
Publication: 15/11/2010 Type: Scientific publication Language: English |
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19 download(s)
129. HDevelopment
of Grid Connected Power
Conditioner System Compatible with Fuel Cell
ApplicationsORABI Mohamed - SOUTH VALLEY University This paper presents a two stage power conditioner (DC-DC converter and DC-AC inverter) connected to the grid. The proposed system has the advantage of generating low input current ripple (less than 2%) which is an important factor for fuel cell applications. Moreover, the design power condition has the feature of high efficiency and achieving unity power factor on the grid side. Through this paper, the small signal analysis for the used converter has been analyzed and based on it the stability of the system is designed using MPPT control. Then, a test model of 1kw PEM fuel cell as been connected with the proposed power conditioner system into the grid and its performance has been tested using PSIM simulation
Document focus on / product (power):
Fuel Cell (undefined)
Publication: 15/11/2010 Type: Scientific publication Language: English |
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13 download(s)
130. The Electromagnetic Compatibility Design Considerations of the Input Filter of a 3-phase Inverter in a Railway Traction SystemORABI Mohamed - SOUTH VALLEY University In this paper, the design considerations of the input filter of the 3-phase inverters in a railway traction system are given. The input filter design should consider the system stability in case of dead-time power gap, the stability of the train performance of the train at low speed, the speed of response of the inverter system due to a load change or a supply voltage change, Electromagnetic Interference limits (EMI), and the correspondence with the impedance at the substation of the wayside. A generic approach and a detailed procedure for the sound design of the input filter are given. Simulation and experimental results are presented from a production train to prove the validity of the proposed approach. The converter is qualified against the EN 50121-3 standards for revenue service purposes. Analytical, simulation and experimental results of a 750Vdc/700Vac 400kW converter are presented to offer the proof of concept.
Document focus on / product (power):
Inverter (undefined)
Publication: 15/11/2010 Type: Scientific publication Language: English |
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34 download(s)
131. Development of High-Gain High-Efficiency
Grid-Connected Inverter for PV ModuleORABI Mohamed - SOUTH VALLEY University This paper proposes a high gain and high efficiency power conditioning system for grid connected PV module. The system consists of a one module of PV, boost converter with high gain transformation ratio, and singlephase H-bridge inverter. The system is suitable for using less number of PV modules or using only one PV module for the grid connection applications which called ac modules. Since the controller will disconnect the whole string of PV modules in case of one PV module is affected by, for example, the shadow. As a result, the proposed system can avoid this phenomenon which results in increasing the whole system efficiency. The paper also proposes an accurate PV cell model which considers the environmental conditions such as temperature and shadow effects. A modified maximum power point tracking (MPPT) algorithm based on the conductance MPPT will be proposed. Additionally, the system will be connected to the utility grid at unity power factor. The proposed system have been studied, analyzed, and simulated for the validation. Also some selected of the experimental results have been provided.
Document focus on / product (power):
Photovoltaic (undefined)
Publication: 15/11/2010 Type: Scientific publication Language: English |
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25 download(s)
132. Design consideration of modified SEPIC converter for LED lamp driverORABI Mohamed - SOUTH VALLEY University In recent years, LED light sources have been used in more applications than conventional light bulbs due to their compactness, lower heat dissipation, high levels of luminous efficiency, real–time color changing capability and most importantly their long time of life.
Document focus on / product (power):
Rectifier (undefined)
Publication: 15/11/2010 Type: Scientific publication Language: English |
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23 download(s)
133. Practical Design guidelines of qZSI based step-up DC/DC converterAVOTINS - RIGA Technical University- RTU EEF IEEI This papaer presents some design guidelines for a new voltage fed step-up DC/DC isolated converter.
Document focus on / product (power):
DC-DC Converters (undefined)
Publication: 07/12/2010 Type: Scientific publication Language: English |
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18 download(s)
134. Energetic Macroscopic Representation and
PSIM simulation: application to a DC/DC
converter input filter stabilityXavier Cimetiere - Ecole Centrale de Lille Nowadays simulation seems to be a mandatory step to design and analyse electrical systems. Simulation software can be classified in two different categories. Structural softwares are dedicated to simulate systems on the basis of their topology. Using component library, the user can easily describe the system by connecting element as in the real system. A specific solver is then used to compute in the best way equivalent relationships. Association conflicts are thus solved and sometimes forbidden by the solver. For example PSPICE, PSIM, Simplorer and many other softwares are based on this philosophy. On the contrary functional softwares are based on equivalent equations without describing the system topology. In this kind of approach, equations can be organized in a causal way. In this case, some association conflicts must be solved by the user. However, the mathematical model is often organized in a way that enables to develop model-based control. For example Matlab- Simulink® is a functional software dedicated to analysis and control of systems.
Document focus on / product (power):
DC-DC Converters (undefined)
Publication: 01-09-2010 Type: Scientific publication Language: English |
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16 download(s)
135. Multiport Converters for Fast Chargers of
Electrical Vehicles -- Focus on High-Frequency
Coaxial TransformersWALTRICH Gierri - Technische Universiteit van Eindhoven A bi-directional multi-port converter can accommodate various energy storages and sources. Therefore, a multiport converter will be a good candidate for application as a future universal converter for (hybrid) electrical vehicles or local distribution systems. For the multiport converter proposed in this paper, the main design challenge is the design of its three-phase symmetrical transformer. In this converter, symmetry of the leakage inductances is essential to ensure balanced three-phase currents (transferred power). These currents are interconnected by three single-phase high-frequency link transformers. To realize the equality of the leakage inductances a specific transformer design is necessary. Since conventionally wound three-phase transformer core shapes suitable for high-frequency are expensive and difficult to build, a coaxially wound transformer will be designed in this paper.
Document focus on / product (power):
Multiport Converter (undefined)
Publication: 09-03-2011 Type: Scientific publication Language: English |
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21 download(s)
136. Modeling and Field Measurements of Photovoltaic
Units Connected to LV Grid. Study of
Penetration ScenariosCharis S. Demoulias, Dimitris P. Labridis, Ioulia T. Papaioannou, Minas C. Alexiadis, Petros S. Dokopoulos - Department of Electrical and Computer Engineering, Aristotle University of Thessaloniki, Greece Abstract—The operation of photovoltaic (PV) units connected to the grid is characterized by several uncertainties due to the number of currently operating units, the points where these units are sited, the exported power, and the injection of harmonic currents. The objective of this paper is to investigate the impact of the penetration of PV units in the low-voltage (LV) network. Thus, a model has been developed for the computation of load flows, harmonics, and voltages in the feeders. A PV panel is modeled as an irradiance- driven current generator, with an embodied maximum power point (MPP) tracking algorithm; it is connected to the network via electronic switches that represent the PV inverter. Simulations are performed with PSIM and Harmoniques simulator packages. Results from the simulated model are validated with data acquired from field measurements and bibliography. Finally, the acceptable penetration level of PVsystems is investigated for several scenarios, depending on the topology of the LV network, the number, size, and locations of loads and PV units. Index Terms—Distributed energy sources, photovoltaic inverters, photovoltaic power systems, power system harmonics
Document focus on / product (power):
Photovoltaic (undefined)
Publication: 17-03-2011 Type: Scientific publication Language: English |
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no file to download *
137. Using Pulse Density Modulation to Improve the
Efficiency of IGBT Inverters in Induction Heating
ApplicationsEnrique Maset - University of Valencia This paper analyses a high power (50 kW), high frequency (150 kHz) voltage fed inverter with a series resonant load circuit for industrial induction heating applications which is characterized by a full bridge inverter made with IGBT and the power control based on pulse density modulation (PDM). This power control strategy allows that the inverter works close to the resonance frequency for all output power levels. In this situation zero-voltage switching (ZVS) and zero-current switching (ZCS) conditions are performed and the switching losses are minimized. The results are verified experimentally using a prototype for induction hardening applications. A comparative study between the PDM and the classical frequency power control will be made.
Document focus on / product (power):
Inverter (undefined)
Publication: 24-03-2011 Type: Scientific publication Language: English |
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no file to download *
138. Study of the Audio Susceptibility in Parallel Power
Processing With a High-Power TopologyEnrique Maset - University of Valencia In this paper, the audio susceptibility characteristic of a high-efficiency nonisolated topology that processes only a part of the total power delivery is analyzed. Since the proposed topology presents a direct path from input to output, the effect of the input voltage ripple at the output voltage has been studied. The effect on the audio susceptibility of the values and disposition of the components and the effect of their parasitic elements must be taken into account. Due to this study, the analytical expression of the audio susceptibility and the design criteria to improve it have been obtained.
Document focus on / product (power):
Parallel power processing (undefined)
Publication: 24-03-2011 Type: Scientific publication Language: English |
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no file to download *
139. Phase Margin Degradation of a Peak Current Controlled Converter at Reduced Duty CycleEnrique Maset - University of Valencia An inner current loop is frequently used in many switching power supplies to achieve higher stability and a good current sharing. Nevertheless, some problems derived from its practical implementation can be encountered. One problem is related to the need of filtering of the sensed current and was discovered by the authors in the implementation of a 500 W converter, when peak current control was applied by sensing the switch current. This paper will demonstrate mathematically that an RC filter not only filters out the noise but also can cause a degradation of the phase margin, especially, if the needed duty cycle is close to zero. The main reason for it is the severe distortion of the current waveform that results in an excessive phase loss. This phase loss is much larger than the expected from the filter and its delay. The problem becomes worse if we reduce the duty cycle and increase the load current. Therefore, the response to the ON time slope of the current waveform is negligible, and we have only the response to a steep rising edge.We will also demonstrate that phase margin loss disappears if current is sensed at the inductor instead of the switch. In both cases, the RC filter results in a different frequency response than the one predicted with the classical peak current mode theory. These differences are analyzed in depth in this paper.
Document focus on / product (power):
Peak Current controlled converter (undefined)
Publication: 24-03-2011 Type: Scientific publication Language: English |
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28 download(s)
140. Multicarrier and Space Vector Modulation for Three-Phase NPC
Converters: A Comparative AnalysisArmando Araujo - FEUP Abstract The three-level neutral point clamped converter is one of the most important multilevel converters. Two important features of the neutral point clamped converter are the neutral point balance and the output voltage characteristics. Carrier and space vector Pulse-Width Modulation control methods efficiently manage the two issues. This paper analyses the voltage balancing problem and shows that a simple control loop maintains the voltage balance in different operating conditions. Besides simulation, the paper experimentally compares the two issues and shows that the two methods produce almost the same results.
Document focus on / product (power):
Three-Phase NPC converter (undefined)
Publication: 25-03-2011 Type: Scientific publication Language: English |
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14 download(s)
141. Operating Limits in Multilevel MPC Inverters with
Active Front EndsL. Vaccaro - 1Università degli Studi di Genova Abstract-Dc-link capacitor voltages must be actively controlled in Multi-Point-Clamped (MPC) converters, in order to achieve a correct voltage sharing. This work demonstrates that when a MPC Active Front End (AFE) rectifier feeds a MPC inverter a balancing strategy does exist that is able to guarantee a correct functioning in all operating conditions. The analytical work, which has been performed to determine the theoretical limits related to a correct behavior, is presented. In addition, a balancing control strategy that has been based on the developed theory is described.
Document focus on / product (power):
Multi-Level Inverter (undefined)
Publication: 14-06-2010 Type: Scientific publication Language: English |
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5 download(s)
142. El problema de los armónicos, origen y efectosJose Maria Flores - Universidad de Córdoba El constante progreso y evolución de la ciencia y la tecnología ha provocado en los últimos años un fuerte cambio en el tipo de cargas conectadas a la red eléctrica. El número de cargas lineales, ya sean resistivas como el tradicional alumbrado incandescente, sistemas de calefacción, etc. o bien inductivas como motores, alumbrado fluorescente, etc. ha ido decreciendo en favor de las cargas no lineales, también llamadas cargas electrónicas. Esto es en parte debido a la mejora en las técnicas de conversión de potencia, ya que equipos que antiguamente se conectaban directamente a la red eléctrica, ahora son alimentados a través de convertidores electrónicos pues estos son de menor tamaño y mejor rendimiento. En general, los circuitos electrónicos son alimentados con tensión continua pero por el contrario, los equipos suelen obtener la energía eléctrica de la red de distribución de baja tensión, por lo que en general siempre hay que hacer una primera conversión CA/CC.
Document focus on / product (power):
Harmonic distorsion (undefined)
Publication: 10-05-2011 Type: Scientific report Language: Spanish |
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10 download(s)
143. ANÁLISIS Y SIMULACIÓN DE CONVERTIDORES
CC/CA MEDIANTE P-SIMJose Maria Flores - Universidad de Córdoba Los convertidores CC/CA se conocen también con el nombre de inversores. Estos circuitos a partir de una tensión continua proporcionan una tensión alterna de amplitud y frecuencia deseadas. La implementación de estos circuitos ha sido posible realizarla de una manera más sencilla que mediante las técnicas clásicas, gracias a la aparición de dispositivos semiconductores de potencia que pueden funcionar como interruptores, tales como transistores de potencia (BJT, MOSFET, IGBT…) y tiristores (GTO, MCT…) a los que se les aplica en su terminal de puerta una señal de control. Con esta señal podemos controlar los intervalos de conducción de los interruptores para obtener a la salida la señal requerida.
Document focus on / product (power):
Rectifier (undefined)
Publication: 10-03-2006 Type: Master Thesis Language: Spanish |
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10 download(s)
144. ANÁLISIS Y SIMULACIÓN DE CONVERTIDORES CC/CA MEDIANTE P-SIMJose Maria Flores - Universidad de Córdoba Los convertidores CC/CA se conocen con el nombre de inversores. • CC CA • Existen dos tipos: – Inversores autónomos. No necesitan conexión a la red eléctrica. La frecuencia de salida viene dada en función del circuito. – Inversores no autónomos. Necesitan conexión a la red para convertir la potencia en alterna. La frecuencia de salida será la misma que la de la red. Las principales aplicaciones son: – S.A.I. Sistemas de alimentación ininterrumpida. Propios de sistemas de gran seguridad de funcionamiento y estabilidad de tensión y frecuencia. – Propulsores de motores CA – Instalaciones de energía solar fotovoltaica, etc.
Document focus on / product (power):
Inverter (undefined)
Publication: 10-03-2006 Type: Scientific publication Language: Spanish |
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5 download(s)
145. Lighting systems: A Course for Increasing Power Electronics
Attractiveness in Non-specialized Engineer School?Nicolas BRACIKOWSKI, Philippe LE MOIGNE, Xavier MARGUERON - Ecole Centrale de Lille This paper presents a new course on lighting systems in a French non-specialized engineer school. This course was conceived to increase student attractiveness for power electronics. After two years of unfolding, the conclusions are interesting. A survey has shown that students were not really more interested in power electronics. The only students' plebiscite is the lighting design using DIALux software. The module is described and placed into the context of a non-specialized engineer school. Students' opinion is then analyzed and capitalized to find why power electronics does not look as an interesting subject for these specific engineers.
Document focus on / product (power):
(undefined)
Publication: 30-08-2011 Type: Scientific poster Language: English |
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5 download(s)
146. Lighting systems: A Course for Increasing Power Electronics
Attractiveness in Non-specialized Engineer School?This paper presents a new course on lighting systems in a French non-specialized engineer school. This course was conceived to increase student attractiveness for power electronics. After two years of unfolding, the conclusions are interesting. A survey has shown that students were not really more interested in power electronics. The only students' plebiscite is the lighting design using DIALux software. The module is described and placed into the context of a non-specialized engineer school. Students' opinion is then analyzed and capitalized to find why power electronics does not look as an interesting subject for these specific engineers.
Document focus on / product (power):
(undefined)
Publication: 30-08-2011 Type: Scientific publication Language: English |
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0 download(s)
147. A Novel Topology for Producing Power Level Sinusoidal OutputH.B. Ertan - IEEE Abstract: Conventional inverter output has PWM output. This pulsed output waveform reduces insulation life time, contributes to quick degradation of the bearings and also is often source of acoustic noise. Furthermore, losses of PWM inverterdriven motors increase. In this paper a novel topology is proposed which is capable of generating a sinusoidal waveform, with low harmonic distortion. If the proposed method is used for driving motors, motor efficiency increases due to reduced losses and lifetime of the motor may be extended. The paper describes the topology used for generating power-level sinus output and how it works. The proposed converter is implemented and tested with resistive and inductive loads. The converter is shown to have the desired properties and the efficiency is shown to be above 95%. The tests on the converter while switching the load on and of illustrate that the converter output voltage is not affected at all from load switching.
Document focus on / product (power):
Inverter (low)
Publication: 21-11-2011 Type: IEEE publication Language: English |
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