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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 5, Issue 4 - Oct 2005
Volume 5, Issue 3 - Jul 2005
Volume 5, Issue 2 - Apr 2005
Volume 5, Issue 1 - Jan 2005
Selecting the target year
A Comparison of Different Intelligent Control Techniques For a PM dc Motor
Amer S. I. ; Salem M. M. ;
Journal of Power Electronics, volume 5, issue 1, 2005, Pages 1~10
This paper presents the application of a simple neuro-based speed control scheme of a permanent magnet (PM) dc motor. To validate its efficiency, the performance characteristics of the proposed simple neuro-based scheme are compared with those of a Neural Network controller and those of a Fuzzy Logic controller under different operating conditions. The comparative results show that the simple neuro-based speed control scheme is robust, accurate and insensitive to load disturbances.
Sensorless Control of a PMSM at Low Speeds using High Frequency Voltage Injection
Yoon Seok-Chae ; Kim Jang-Mok ;
Journal of Power Electronics, volume 5, issue 1, 2005, Pages 11~19
This paper describes the two control techniques to perform the sensorless vector control of a PMSM by injecting the high frequency voltage to the stator terminal. The first technique is the estimation algorithm of the initial rotor position. A PMSM possesses the saliency which produces the ellipse of the stator current when the high frequency voltage is injected into the motor terminal. The major axis angle of the current ellipse gives the rotor position information at a standstill. The second control technique is a sensorless control algorithm that injects the high frequency voltage to the stator terminal in order to estimate the rotor position and speed. The rotor position and speed for sensorless vector control is calculated by appropriate signal processing to extract the position information from the stator current at low speeds or standstill. The proposed sensorless algorithm using the double-band hysteresis controller exhibits excellent reference tracking and increased robustness. Experimental results are presented to verify the feasibility of the proposed control schemes. Speed, position estimation and vector control were carried out on the floating point processor TMS320VC33.
A Fuzzy Predictive Sliding Mode Control for High Performance Induction Motor Position Drives
Bayoumi E.H.E. ; Nashed M.N.F. ;
Journal of Power Electronics, volume 5, issue 1, 2005, Pages 20~28
This paper presents a fuzzy predictive sliding mode control for high performance induction motor position drives. A new simplified inner-loop sliding-mode current control scheme based on a nonlinear mathematical model of an induction motor is introduced. Novel predictive fuzzy logic PI and PID controllers are used in speed and position loops, respectively. Sliding-mode current controllers and fuzzy predictive logic controllers are designed based on indirect vector control. The overall system performance is examined under different dynamic operating conditions. The performance of the drive system is robust and stable, and insensitive to parameters and operating condition variations even though non-exact system parameters are used in the implementation of the proposed controllers.
An Active Auxiliary Quasi-Resonant Commutation Block Snubber-Assisted Three Phase Voltage Source Soft Switching PFC Rectifier using IGBTs
Hiraki Eiji ; Nakaoka Mutsuo ; Sugimoto Shigeyuki ; Ogawa Shigeaki ;
Journal of Power Electronics, volume 5, issue 1, 2005, Pages 29~35
This paper presents a novel prototype of an active auxiliary quasi-resonant snubber(Auxiliary Quasi-Resonant Commutation Block-Link; ARCB)-assisted three phase voltage source soft switching space voltage vector modulated PFC rectifier, which uses Zero Voltage Soft Switching (ZVS) commutation. The operating principles of this digitally-controlled three phase soft switching PWM-PFC rectifier system with an instantaneous power feedback scheme are illustrated and its steady-state performance is evaluated using computer-aided simulation analysis.
Direct Torque Control System of a Reluctance Synchronous Motor Using a Neural Network
Kim Min-Huei ;
Journal of Power Electronics, volume 5, issue 1, 2005, Pages 36~44
This paper presents an implementation of high performance control of a reluctance synchronous motor (RSM) using a neural network with a direct torque control. The equivalent circuit in a RSM, which considers iron losses, is theoretically analyzed. Also, the optimal current ratio between torque current and exiting current is analytically derived. In the case of a RSM, unlike an induction motor, torque dynamics can only be maintained by controlling the flux level because torque is directly proportional to the stator current. The neural network is used to efficiently drive the RSM. The TMS320C3l is employed as a control driver to implement complex control algorithms. The experimental results are presented to validate the applicability of the proposed method. The developed control system shows high efficiency and good dynamic response features for a 1.0 [kW] RSM having a 2.57 ratio of d/q.
Performances of SRM for LSEV
Ahn Jin-Woo ; Kim Tae-Hyoung ; Lee Dong-Hee ;
Journal of Power Electronics, volume 5, issue 1, 2005, Pages 45~54
This paper presents an application of SR drives for LSEV's(Low Speed Electric Vehicles) which are used for golf and leisure. Two types of 5[HP] SRM's and its drive system are designed and tested. In order to be energy saving and have effective braking during deceleration, a multi-level inverter is proposed. For the precise switching angle control, a new type of analog encoder is proposed. A current control is adopted for soft starting and an angle control is adopted at high speed to increase efficiency. Drive characteristics and performance are shown with test results.
A Fuel Cell Generation System with a Fuel Cell Simulator
Lee Tae-Won ; Jang Su-Jin ; Jang Han-Keun ; Won Chung-Yuen ;
Journal of Power Electronics, volume 5, issue 1, 2005, Pages 55~61
A fuel cell (FC) system includes a fuel processor plus subsystems to manage air, water, and thermal energy, and electric power. The overall system is high-priced and needs peripheral devices. In this paper, a FC simulator is designed and constructed with the electrical characteristics of a fuel cell generation (FCG) system, using uses a simple buck converter to overcome these disadvantages. The characteristic voltage and current (V-I) curve for the FC simulator is controlled by a simplified linear function. In addition, to verify FCG system performance and operation, a full-bridge DC/DC converter and a single-phase DC/AC inverter were designed and constructed for FC applications. Close agreement between the simulation and experimental results confirms the validity and usefulness of the proposed FC simulator.
A Simple Fault Correction Method for Rotor Position Detection of Brushless DC Motor using a Latch Type Hall Effect Sensor
Baik In-Cheol ; Joo Hyeong-Gil ;
Journal of Power Electronics, volume 5, issue 1, 2005, Pages 62~66
A simple fault correction method for rotor position detection of a brushless DC(BLDC) motor with trapezoidal back EMF(electromotive force) using a Hall effect latch unit is presented. The reason why the Hall effect latch unit does not operate properly during the startup of a BLDC motor is thoroughly explained. To solve this problem, a simple code change method and its hardware implementation issues are proposed and discussed.
A High Efficiency ZVS PWM Asymmetrical Half Bridge Converter for Plasma Display Panel Sustaining Power Modules
Han Sang-Kyoo ; Moon Gun-Woo ; Youn Myung-Joong ;
Journal of Power Electronics, volume 5, issue 1, 2005, Pages 67~75
A high efficiency ZVS PWM asymmetrical half bridge converter for a plasma display panel (PDP) sustaining power modules is proposed in this paper. To achieve the ZVS of power switches for the wide load range, a small additional inductor L/sub 1kg/, which also acts as an output filter inductor, is serially inserted into the transformer's primary side. At that point, to solve the problem of ringing in the secondary rectifier caused by L/sub 1kg/, the proposed circuit employs a structure without the output filter inductor, which helps the voltages across rectifier diodes to be clamped at the output voltage. Therefore, no dissipative RC (resistor capacitor) snubber for rectifier diodes is needed and a high efficiency as well as low noise output voltage can be realized. In addition, since it has no large output inductor filter, the asymmetrical half bridge converter features a simpler structure, lower cost, less mass, and lighter weight. In addition, since all energy stored in L/sub 1kg/ is transferred to the output side, the circulating energy problem can be effectively solved. The operational principle, theoretical analysis, and design considerations are presented. To confirm the operation, validity, and features of the proposed circuit, experimental results from a 425W, 385Vdc/170Vdc prototype are presented.
A Single Carrier Multi-Modulation Method In Multilevel Inverters
Nho Nguyen Van ; Youn Myung Joong ;
Journal of Power Electronics, volume 5, issue 1, 2005, Pages 76~82
A novel variant of full multi-modulation applications to diode-clamped and cascade multilevel inverter-termed single carrier multi-modulation is presented. The proposed PWM-technique is advantageous for its simple implementation. The correlation between multi-carrier and single-carrier multi-modulations is deduced. For the PWM methods, a mathematical model of voltage source inverter and general algorithm for the multi-modulating modulator are proposed. The theory is demonstrated by simulation results