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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Journal of Power Electronics
Journal Basic Information
Journal DOI :
The Korean Institute of Power Electronics
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Volume & Issues
Volume 10, Issue 6 - Nov 2010
Volume 10, Issue 5 - Sep 2010
Volume 10, Issue 4 - Jul 2010
Volume 10, Issue 3 - May 2010
Volume 10, Issue 2 - Mar 2010
Volume 10, Issue 1 - Jan 2010
Selecting the target year
Drives and Motion Control Teaching based on Distance Laboratory and Remote Experiments
Vogelsberger, Markus A. ; Macheiner, Peter ; Bauer, Pavol ; Wolb, Thomas M. ;
Journal of Power Electronics, volume 10, issue 6, 2010, Pages 579~586
DOI : 10.6113/JPE.2010.10.6.579
This paper presents the organisation and the technical structure of a remote controlled laboratory in the field of high dynamic drives and motion control. It is part of the PEMCWebLab project with the goal of providing students with practical experience on real systems in the field of power electronics and drives. The whole project is based on clear targets and leading ideas. A set of experiments can be remotely performed on a real system to stepwise identify a two axes positioning system and to design different cascaded control loops. Each single experiment is defined by its goals, the content of how to achieve them, and a verification of the results as well as the achieved learning outcomes. After a short description of the PEMCWebLab project, the structure of the remote control is presented together with the hardware applied. One important point is error handling as real machines and power electronics are applied. Finally, a selection of experiments is presented to show the graphical user interface and the sequence of the laboratory.
Philosophy of Interactive e-Learning for Power Electronics and Electrical Drives: a Way from Ideas to Realization
Bauer, Pavol ; Fedak, Viliam ;
Journal of Power Electronics, volume 10, issue 6, 2010, Pages 587~594
DOI : 10.6113/JPE.2010.10.6.587
The paper reports about methodology at design of interactive e-learning modules that are suitable both for teaching and learning. They cover special topics of electrical engineering, starting from the fundamentals, through electrical machines, power electronics to the fields of controlled electromechanical energy conversion, like electrical drives, complex drive systems, application of drives, mechatronic systems, telemanipulation, and robotics. In the paper, the emphasis is devoted in detail to philosophy and realization of the modules from fields of Power Electronics and Electrical Drives. On several examples there are explained main principles and specialties at their development.
Teaching Switching Converter Design Using Problem-Based Learning with Simulation of Characterization Modeling
Wang, Shun-Chung ; Chen, Yih-Chien ; Su, Juing-Huei ;
Journal of Power Electronics, volume 10, issue 6, 2010, Pages 595~603
DOI : 10.6113/JPE.2010.10.6.595
In this paper, teaching in a "switching converter (SC) design" course using problem-based learning (PBL) with dynamicbehavior- model simulation, given at Lunghwa University of Science and Technology (LHU), Taiwan, is proposed. The devised methodology encourages students to design and implement the SCs and regulate the controller's parameters in frequency domain by using 'sisitool' ('bode') in the MATLAB toolbox. The environment of PBL with converter characterization modeling and simulation reforms the learning outcome greatly and speeds up the teaching-learning process. To qualify and evaluate the learning achievements, a hands-on project cooperated with the continuous assessment approach is performed to modulate the teaching pace and learning direction in good time. Results from surveys conducted in the end of the course provided valuable opinions and suggestions for assessing and improving the learning effect of the proposed course successively. Positive feedbacks from the examinations, homework, questionnaires, and the answers to the lecturer's quizzes during class indicated that the presented pedagogy supplied more helpfulness to students in comparisons with conventional teaching paradigm, their learning accomplishments were better than expected as well.
Remote-Controlled Experiment with Integrated Verification of Learning Outcome
Staudt, Volker ; Menzner, Stefan ; Baue, Pavol ;
Journal of Power Electronics, volume 10, issue 6, 2010, Pages 604~610
DOI : 10.6113/JPE.2010.10.6.604
Experiments in electrical engineering should mirror the key components of successful research and development: Understand the basic theory needed, test the resulting concepts by simulation and verify these, finally, in the experiment. For optimal learning outcome continuous monitoring of the progress of each individual student is necessary, immediately repeating those subjects which have not been learned successfully. Classically, this is the task of the teacher. In case of remote-controlled experiments this monitoring process and the repetition of subjects should be automated for optimal learning outcome. This paper describes a remote-controlled experiment combining theory, simulation and the experiment itself with an automated monitoring process. Only the evaluation of the experimental results and their comparison to the simulation results has to be checked by a teacher. This paper describes the details of the educational structure for a remote-controlled experiment introducing active filtering of harmonics. For better understanding the content of the learning material (theory and simulation) as well as the results of the experiment and the underlying booking system are shortly presented.
Real-Time Power Electronics Remote Wiring and Measurement Laboratory (PermLAB) Using 3-D Matrix Switching Algorithms
Asumadu, Johnson A. ; Tanner, Ralph ; Ogunley, Hakeem ;
Journal of Power Electronics, volume 10, issue 6, 2010, Pages 611~620
DOI : 10.6113/JPE.2010.10.6.611
Undergraduate Power Electronics Laboratory - Applying TSMST Method
Jakopovic, Zeljko ; Sunde, Viktor ; Benci, Zvonko ;
Journal of Power Electronics, volume 10, issue 6, 2010, Pages 621~627
DOI : 10.6113/JPE.2010.10.6.621
This paper presents a TSMST (Theory - Simulation - Measurement - Simulation - Theory) method for power electronics laboratory. The method successfully integrates theory, simulation and measurement, thus enabling better integration of student's knowledge and better usage of inadequate number of laboratory hours. Students are attracted with relatively simple tasks to be solved and modern, but economical laboratory equipment. A significant part of the assignments can be made at home, thus lowering the pressure on students to finish the tasks on time. The proposed method is described on three basic examples explaining characteristic phases of the TSMST method.
Distance Education in Soft-Switching Inverters
Lascu, Dan ; Bauer, Pavol ; Babaita, Mircea ; Lascu, Mihaela ; Popescu, Viorel ; Popovici, Adrian ; Negoitescu, Dan ;
Journal of Power Electronics, volume 10, issue 6, 2010, Pages 628~634
DOI : 10.6113/JPE.2010.10.6.628
The paper describes aspects regarding an E-learning approach of resonant ac inverters. The learning process is based on "Learning by Doing" paradigm supported by several learning tools: electronic course materials, interactive simulation, laboratory plants and real experiments accessed by Web Publishing Tools under LabVIEW. Built on LabVIEW and accompanied by a robust, flexible and versatile hardware, the experiment allows a comprehensive study by remote controlling and performing real measurements on the inverters. The study is offered in a gradual manner, according to the Leonardo da Vinci project EDIPE (
ducation) philosophy: theoretical aspects followed by simulations, while in the end the real experiments are investigated. Studying and experimenting access is opened for 24 hours a day, 7 days a week under the Moodle booking system.
Multimedia Educational Material and Remote Laboratory for Sliding Mode Control Measurements
Takarics, Bela ; Sziebig, Gabor ; Solvang, Bjorn ; Koro, Peter ;
Journal of Power Electronics, volume 10, issue 6, 2010, Pages 635~642
DOI : 10.6113/JPE.2010.10.6.635
The paper presents a multimedia educational program of DC servo drives for distant learning with a special emphasis on sliding mode control. The program contains of three parts: animation, simulation and internet based measurement. The animation program explains the operation of DC motors, gives its time- and frequency-domain equations, transfer functions and the theoretical background necessary for controller design for DC servo motors. The simulation model of the DC servo motor and the controller can be designed by the students based on the animation program. The students can also test their controllers through the internet based measurement, which is the most important part from engineering point of view. After the measurements are executed, the students can download the measured data and compare them to the simulation results.
TCAD Based Power Semiconductor Device e-Learning Tool
Landowski, Matthew M. ; Shen, Z. John ;
Journal of Power Electronics, volume 10, issue 6, 2010, Pages 643~646
DOI : 10.6113/JPE.2010.10.6.643
An interactive web-based teaching tool for a power semiconductor course at the University of Central Florida is presented in this paper. A novel approach is introduced using Technology Aided Design Tools (TCAD) to generate time-lapsed 2D semiconductor device cross-section embedded in a webpage using
Flash (web design tool) platform to create interactive movies that demonstrate complex device physical phenomenon. Students can step through the interactive movies forward, backward, pausing, or looping. Each step represents a giving bias condition. Current-voltage plots are represented along with the semiconductor device and a visual point is placed on the IV curve to indicate the current bias conditions. The changes are then reflected in the 2D cross-section movie area and the IV plot. This tool was implemented in a classroom setting to augment the lectures or for discovery learning.
Design of PM Motor Drive Course and DSP Based Robot Traction System Laboratory
Yousfi, Driss ; Belkouch, Said ; Ouahman, Abdellah Ait ; Grenier, Damien ; Dehez, Bruno ; Richard, Eric ;
Journal of Power Electronics, volume 10, issue 6, 2010, Pages 647~659
DOI : 10.6113/JPE.2010.10.6.647
This paper presents a part of North Africa/Europe collaboration results in education to develop project-oriented courses in power electronics and motor drive field. The course aims to teach Permanent Magnet motor drives close to a real world project of significant size and depth so as to be motivational, namely mobile robot project. Particular skills, student will acquire, are those relative to the detailed design and implementation of PM motor controllers in DSP based rapid prototyping environment. Simulation work is completed using graphical modeling tools in Simulink/Plecs, while real-time implementation is achieved by means of eZdspF2812 board and Simulink/TI C2000 Embedded Target tools. This flexible development environment fit the robot traction system very well and provides exactly the functionality necessary for an efficient PM motor drives teaching as demonstrated by a set of simulation and experiments.
Reliability: A Neglected Topic in the Power Electronics Curricula
Calleja, Hugo ; Chan, Freddy ;
Journal of Power Electronics, volume 10, issue 6, 2010, Pages 660~666
DOI : 10.6113/JPE.2010.10.6.660
This paper presents the approach followed to develop a course that introduces reliability into the design of power electronics converters. The course is part of the curriculum of a master of science in electrical engineering program, and it is aimed at providing reliability tools that can be used in a straightforward manner, while avoiding the mathematical intricacies. The reliability calculations are performed according to the Military Handbook 217, using the evaluation version of a commercial software package which greatly reduces the computational burden usually associated with this task. The course assessment shows that, after attending the course, students were able to improve the mean time between failures in a power-electronics converter, from a minimum of 5%, up to 100%.
On Teaching Switched Mode Power Supplies - A Converter with Limited Duty Cycle
Himmelstoss, Felix A. ;
Journal of Power Electronics, volume 10, issue 6, 2010, Pages 667~672
DOI : 10.6113/JPE.2010.10.6.667
A way how to teach a general understanding of switched mode power supplies (SMPS) is shown. A fourth order PWM DC-to-DC converter with limited duty cycle range is treated as an example and a survey over important data (maximum voltage and current ratings for the elements, rms- values for the semiconductor devices and a rough approximation of the losses) of the circuit is given. Furthermore, a converter model based on duty ratio averaging is established. Continuous mode of operation is used. The results make it possible to estimate the applicability of the given converter structure and offer sufficient material for the calculation, design, and analysis and give a better insight into switched mode energy conversion.
DSP Based Series-Parallel Connected Two Full-Bridge DC-DC Converter with Interleaving Output Current Sharing
Sha, Deshang ; Guo, Zhiqiang ; Lia, Xiaozhong ;
Journal of Power Electronics, volume 10, issue 6, 2010, Pages 673~679
DOI : 10.6113/JPE.2010.10.6.673
Input-series-output-parallel (ISOP) connected DC-DC converters enable low voltage rating switches to be used in high voltage input applications. In this paper, a DSP is adopted to generate digital phase-shifted PWM signals and to fulfill the closed-loop control function for ISOP connected two full-bridge DC-DC converters. Moreover, a stable output current sharing control strategy is proposed for the system, with which equal sharing of the input voltage and the load current can be achieved without any input voltage control loops. Based on small signal analysis with the state space average method, a loop gain design with the proposed scheme is made. Compared with the conventional IVS scheme, the proposed strategy leads to simplification of the output voltage regulator design and better static and dynamic responses. The effectiveness of the proposed control strategy is verified by the simulation and experimental results of an ISOP system made up of two full-bridge DC-DC converters.
Precise Analytical Solution for the Peak Gain of LLC Resonant Converters
Hong, Sung-Soo ; Cho, Sang-Ho ; Roh, Chung-Wook ; Han, Sang-Kyoo ;
Journal of Power Electronics, volume 10, issue 6, 2010, Pages 680~685
DOI : 10.6113/JPE.2010.10.6.680
Although LLC resonant converters have the advantages of a wide operation range and high efficiency, the lack of an analytical solution for the peak gain makes it difficult to optimize the resonant tank design, when considering not only the normal condition but also the holdup time requirement. In this paper, based on a mathematical analysis of a LLC resonant converter at the peak gain point, an analytical solution for the peak gain has been developed. By using the developed analytical solution, the peak gain with given resonant tank parameters can be obtained. To confirm the validity of the developed analytical solution, simulations and experimental results are compared.
Fault Diagnosis of a Voltage-Fed PWM Inverter for a Three-parallel Power Conversion System in a Wind Turbine
Ko, Young-Jong ; Lee, Kyo-Beum ;
Journal of Power Electronics, volume 10, issue 6, 2010, Pages 686~693
DOI : 10.6113/JPE.2010.10.6.686
In this paper, a fault diagnosis method based on fuzzy logic for the three-parallel power converter in a wind turbine system is presented. The method can not only detect both open and short faults but can also identify faulty switching devices without additional voltage sensors or an analysis modeling of the system. The location of a faulty switch can be indicated by six-patterns of a stator current vector and the fault switching device detection is achieved by analyzing the current vector. A fault tolerant algorithm is also presented to maintain proper performance under faulty conditions. The reliability of the proposed fault detection technique has been proven by simulations and experiments with a 10kW simulator.
Model Following Sliding-Mode Control of a Six-Phase Induction Motor Drive
Abjadi, Navid R. ; Markadeh, Gholamreza Arab ; Soltan, Jafar ;
Journal of Power Electronics, volume 10, issue 6, 2010, Pages 694~701
DOI : 10.6113/JPE.2010.10.6.694
In this paper an effective direct torque control (DTC) and stator flux control is developed for a quasi six-phase induction motor (QIM) drive with sinusoidally distributed windings. Combining sliding-mode (SM) control and adaptive input-output feedback linearization, a nonlinear controller is designed in the stationary reference frame, which is capable of tracking control of the stator flux and torque independently. The motor controllers are designed in order to track a desired second order linear reference model in spite of motor resistances mismatching. The effectiveness and capability of the proposed method is shown by practical results obtained for a QIM supplied from a voltage source inverter (VSI).
Low-Cost Fault Diagnosis Algorithm for Switch Open-Damage in BLDC Motor Drives
Park, Byoung-Gun ; Lee, Kui-Jun ; Kim, Rae-Young ; Hyun, Dong-Seok ;
Journal of Power Electronics, volume 10, issue 6, 2010, Pages 702~708
DOI : 10.6113/JPE.2010.10.6.702
In this paper, a fault diagnosis algorithm for brushless DC (BLDC) motor drives is proposed to maintain control performance under switch open-damage. The proposed fault diagnosis algorithm consists of a simple algorithm using measured phase current information and it detects open-circuit faults based on the operating characteristic of BLDC motors. The proposed algorithm quickly recovers control performance due to its short detection time and its reconfiguration of the system topology. It can be embedded into existing BLDC drive software as a subroutine without additional sensors. The feasibility of the proposed fault diagnosis algorithm is proven by simulation and experimental results.
Torque Ripple Reduction of a PM Synchronous Motor for Electric Power Steering using a Low Resolution Position Sensor
Cho, Kwan-Yuhl ; Lee, Yong-Kyun ; Mok, Hyung-Soo ; Kim, Hag-Wone ; Jun, Byoung-Ho ; Cho, Young-Hoon ;
Journal of Power Electronics, volume 10, issue 6, 2010, Pages 709~716
DOI : 10.6113/JPE.2010.10.6.709
MDPS (motor driven power steering) systems have been widely used in vehicles due to their improved fuel efficiency and steering performance when compared to conventional hydraulic steering. However, the reduction of torque ripples and material cost are important issues. A low resolution position sensor for MDPS is one of the candidates for reducing the material costs. However, it may increases the torque ripple due to the current harmonics caused by low resolution encoder signals. In this paper, the torque ripple caused by the quantized rotor position of the low resolution encoder is analyzed. To reduce the torque ripples caused by the quantization of the encoder signals, the rotor position and the speed are estimated by measuring the frequency of the encoder signals. In addition, the compensating q-axis current is added to the current command so that the 6th order torque harmonic is attenuated. The reduction of torque ripples by applying the estimated rotor position and the compensated q-axis current is verified through experimental results.
Torque Maximization Control of 3-Phase BLDC Motors in the High Speed Region
Im, Won-Sang ; Kim, Jong-Pil ; Kim, Jang-Mok ; Baek, Kwang-Ryul ;
Journal of Power Electronics, volume 10, issue 6, 2010, Pages 717~723
DOI : 10.6113/JPE.2010.10.6.717
This paper proposes a new torque control algorithm for BLDC motors to get the maximum torque in the high speed region. The delay of the phase currents is severe due to the stator reactance. The torque fluctuations of BLDC motors increase and the average torque is decreases due to a slow rise in the phase current when compared to the back EMF. In this paper, the phase current of BLDC motors under the high speed condition is analyzed and a torque maximization control is developed on the basis of using numerical analysis. Computer simulations and experimental results show the usefulness of the proposed control algorithm.
An Effective Rotor Current Controller for Unbalanced Stand-Alone DFIG Systems in the Rotor Reference Frame
Phan, Van-Tung ; Lee, Hong-Hee ; Chu, Tae-Won ;
Journal of Power Electronics, volume 10, issue 6, 2010, Pages 724~732
DOI : 10.6113/JPE.2010.10.6.724
This paper presents an effective rotor current controller for variable-speed stand-alone doubly fed induction generator (DFIG) systems feeding an unbalanced three-phase load. The proposed current controller is developed based on proportional plus two resonant regulators, which are tuned at the positive and negative slip frequencies and implemented in the rotor reference frame without decomposing the positive and negative sequence components of the measured rotor current. In addition, the behavior of the proposed controller is examined in terms of control performance and stability with respect to rotor speed variations, i.e., slip frequency variations. Simulations and experimental results are shown to validate the robustness and effectiveness of the proposed control method.
Ride-Through Technique for PMSG Wind Turbines using Energy Storage Systems
Nguyen, Thanh Hai ; Lee, Dong-Choon ;
Journal of Power Electronics, volume 10, issue 6, 2010, Pages 733~738
DOI : 10.6113/JPE.2010.10.6.733
This paper deals with a ride-through technique for permanent-magnet synchronous generator (PMSG) wind turbine systems using energy storage systems (ESS). A control strategy which consists of current and power control loops for the energy storage systems is proposed. By increasing the generator speed, some portion of the turbine power can be stored in the system inertia. Therefore, the required energy capacity of the ESS can be decreased, which results in a low-cost system. In addition, the power fluctuations due to wind speed variations can be smoothened by controlling the ESS appropriately. The effectiveness of the proposed method is verified not only by the simulation results for a 2[MW] PMSG wind turbine system, but also by the experiment results for a reduced-scale turbine simulator.
Dynamic Model of PEM Fuel Cell Using Real-time Simulation Techniques
Jung, Jee-Hoon ; Ahmed, Shehab ;
Journal of Power Electronics, volume 10, issue 6, 2010, Pages 739~748
DOI : 10.6113/JPE.2010.10.6.739
The increased integration of fuel cells with power electronics, critical loads, and control systems has prompted recent interest in accurate electrical terminal models of the polymer electrolyte membrane (PEM) fuel cell. Advancement in computing technologies, particularly parallel computation techniques and various real-time simulation tools have allowed the prototyping of novel apparatus to be investigated in a virtual system under a wide range of realistic conditions repeatedly, safely, and economically. This paper builds upon both advancements and provides a means of optimized model construction boosting computation speeds for a fuel cell model on a real-time simulator which can be used in a power hardware-in-the-loop (PHIL) application. Significant improvement in computation time has been achieved. The effectiveness of the proposed model developed on Opal RT's RT-Lab Matlab/Simulink based real-time engineering simulator is verified using experimental results from a Ballard Nexa fuel cell system.
Analysis and Specifications of Switching Frequency in Parallel Active Power Filters Regarding Compensation Characteristics
Guopeng, Zhao ; Jinjun, Liu ;
Journal of Power Electronics, volume 10, issue 6, 2010, Pages 749~761
DOI : 10.6113/JPE.2010.10.6.749
The switching frequency of a power device is a very important parameter in the design of a parallel active power filter (PAPF), but so far, very little discussion has been conducted on it in a quantitative manner in previous publications. In this paper, an extensive analysis on the effects of the switching frequency on the performance of a PAPF is made, and a specification of the switching frequency values with different compensation results is presented. A first-order inertia element and a second-order oscillation element are considered as approximate models of a PAPF, respectively. The compensation characteristic for each order of harmonic current is obtained at different switching frequencies. Then, the THDs of each model for the system loads of a rectifier with resistance and inductance loads are proposed. The compensation results of a PAPF controlled as a first-order inertia element are better than those of a PAPF controlled as a second-order oscillation element. With two types of system loads which are rectifier with resistance and inductance loads and rectifier with resistance, inductance and capacitance loads, the THDs of the source current after compensation are presented with different switching frequencies. The compensation characteristics for the most widely used digital control system are investigated. The situation with an analog control is the theoretical characteristic and it is the best situation. The compensation characteristic of the digital control is worse than the compensation characteristic of the theoretical characteristic. Based on these analyses, the specifications of compensation characteristics with different switching frequencies are quite straightforward. Finally, a practical design example is studied to verify the application.
Islanding Detection Method for Inverter-based Distributed Generation Systems using a Signal Cross-correlation Scheme
Bae, Byung-Yeol ; Jeong, Jong-Kyou ; Lee, Ji-Heon ; Han, Byung-Moon ;
Journal of Power Electronics, volume 10, issue 6, 2010, Pages 762~768
DOI : 10.6113/JPE.2010.10.6.762
This paper describes the development of a new islanding detection method for inverter-based distributed generation systems, which uses a signal cross-correlation scheme between the injected reactive current and the power frequency deviation. The proposed method injects 1% of the reactive current to the rated current which brings about a negligible degradation of the power quality. It discriminates the islanding state, when the calculated cross-correlation index is larger than 0.5. The operational feasibility was verified through computer simulations with PSCAD/EMTDC software and experimental research with a hardware prototype. The proposed method can detect the islanding state without degrading the power quality at the point of common connection. Further study is required to overcome the cancellation of the injected reactive current from multiple distributed generation units interconnected with the utility grid.
Dynamic SOC Compensation of an Ultracapacitor Module for a Hybrid Energy Storage System
Song, Hyun-Sik ; Jeong, Jin-Beom ; Shin, Dong-Hyun ; Lee, Baek-Haeng ; Kim, Hee-Jun ; Heo, Hoon ;
Journal of Power Electronics, volume 10, issue 6, 2010, Pages 769~776
DOI : 10.6113/JPE.2010.10.6.769
The ultracapacitor module has recently been recast for use in hybrid energy storage systems (HESSs). As a result, accurate state-of-charge (SOC) estimation for an ultracapacitor module is as important as that of primary sources in order to be utilized efficiently in an energy storage system (ESS). However, while SOC estimation via the open-circuit voltage (OCV) method is generally used due to its linear characteristics compared with other ESSs, this method results in many errors in cases of highcurrent charging/discharging within a short time period. Accordingly, this paper introduces a dynamic SOC estimation algorithm that is capable of SOC compensation of an ultracapacitor module even when there is a current input and output. A cycle profile that simulates the operating conditions of a mild-HEV was applied to a vehicle simulator to verify the effectiveness of the proposed algorithm.
A Protection Circuit for the Power Supply of a Gas Discharge Lamp
Kim, Ho-Sung ; Kim, Jong-Hyun ; Baek, Ju-Won ; Yoo, Dong-Wook ; Jung, Hye-Man ; Kim, Hee-Je ;
Journal of Power Electronics, volume 10, issue 6, 2010, Pages 777~783
DOI : 10.6113/JPE.2010.10.6.777
In order to drive gas discharge lamps, DC-AC converters with a LCC resonant tank, whose output voltage is adjusted by a variable frequency control are frequently used. However, when they are activated by varying the operating frequency, converters are frequently damaged by unstable operation, due to the rising and falling of the operating frequency near the resonant frequency. To solve this problem, a simple protection circuit for the power supply of a gas discharge lamp is proposed in this paper. This circuit senses the primary current of the main transformer. Using this protection circuit, the operating frequency of the lamp driving inverter system is kept close to and on the right side of the resonant frequency and the inverter is always operated in the ZVS condition. The resulting stable variable frequency operation allows various gas discharge lamps to be tested without the risk of damaging the main switches, because the protection circuit can protect the power MOSFETs of bridge converters from abnormal conditions. The validity and effectiveness of the proposed protection circuit are verified through the experimental results.
Resonant Pulse Power Converter with a Self-Switching Technique
Kim, Hyeok-Jin ; Chung, Gyo-Bum ; Cho, Jae-Ho ;
Journal of Power Electronics, volume 10, issue 6, 2010, Pages 784~791
DOI : 10.6113/JPE.2010.10.6.784
In this paper, a resonant pulse power converter (RPPC) is proposed. The proposed RPPC transfers the pulse-shape power from a DC source to a load periodically. The RPPC consists of a resonant circuit and a resonant pulse converter driven by a self-switching circuit. Depending on the magnitude difference between the input and output voltages, the operations of the RPPC are divided into 4 modes; boost mode, hybrid mode, direct mode and cut-off mode, respectively. The main switch of the RPPC turns on in the ZCS condition and off in the ZVS condition spontaneously. The operational principles of a RPPC using the self-switching technique are analyzed and verified in experiments. An example of a RPPC application is demonstrated in the area of thermoelectric energy harvesting.