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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
Editor in Chief :
Volume & Issues
Volume 4, Issue 4 - Oct 2004
Volume 4, Issue 3 - Jul 2004
Volume 4, Issue 2 - Apr 2004
Volume 4, Issue 1 - Jan 2004
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Hybrid Induction Motor Control Using a Genetically Optimized Pseudo-on-line Method
Lee, Jong-seok ; Jang, Kyung-won ; J. F. Peters ; Ahn, Tae-chon ;
Journal of Power Electronics, volume 4, issue 3, 2004, Pages 127~137
This paper introduces a hybrid induction motor control using a genetically optimized pseudo-on-line method. Optimization results from the use of a look-up table based on genetic algorithms to find the global optimum of an unconstrained optimization problem. The approach to induction motor control includes a pseudo-on-line procedure that optimally estimates parameters of a fuzzy PID (FPID) controller. The proposed hybrid genetic fuzzy PID (GFPID) controller is applied to speed control of a 3-phase induction motor and its computer simulation is carried out. Simulation results show that the proposed controller performs better than conventional FPID and PID controllers. The contribution of this paper is the introduction of a high performance hybrid form of induction motor control that makes on-line and real-time control of the drive system possible.
Dual Mode Phase-Shifted ZVS-PWM Series Load Resonant High-Frequency Inverter for Induction Heating Super Heated Steamer
Hisayuki Sugimura ; Hidekazu Muraoka ; Tarek Ahmed ; Srawouth Chandhaket ; Eiji Hiraki ; Mutsuo Nakaoka ; Lee, Hyun-Woo ;
Journal of Power Electronics, volume 4, issue 3, 2004, Pages 138~151
In this paper, a constant frequency phase shifting PWM-controlled voltage source full bridge-type series load resonant high-frequency inverter using the
generation IGBT power modules is presented for innovative consumer electromagnetic induction heating applications, such as a hot water producer, steamer and super heated steamer. The bridge arm side link passive capacitive snubbers in parallel with each power semiconductor device and AC load side linked active edge inductive snubber-assisted series load resonant tank soft switching inverter with a constant frequency phase shifted PWM control scheme is evaluated and discussed on the basis of the simulation and experimental results. It is proved from a practical point of view that the series load resonant and edge resonant hybrid high-frequency inverter topology, what is called, DE class type, including the variable-power variable-frequency regulation function can expand zero voltage soft switching commutation area even under low output power setting ranges, which is more suitable and acceptable for newly developed induction heated dual pack fluid heaters. Furthermore, even the lower output power regulation mode of this high-frequency load resonant tank inverter circuit is verified so that this inverter can achieve ZVS with the aid of the single auxiliary inductor snubber.
Design of a Digital PWM Controller for a Soft Switching SEPIC Converter
Nashed, Maged N.F. ;
Journal of Power Electronics, volume 4, issue 3, 2004, Pages 152~160
This paper presents analysis, modeling, and design of a low-harmonic, isolated, active-clamped SEPIC for future avionics applications. Simpler converter dynamics, high switching frequency, zero voltage-Transition-PWM switching, and a single-layer transformer construction result. This paper describes complete design of a digital controller for a high-frequency switching power supply. Guidelines for the minimum required resolution of the analog-to-digital converter, the pulse-width modulator, and the fixed-point computational unit is derived. A design example based on a SEPIC converter operating at the high switching frequency is presented. The controller design is based on direct digital design approach and standard root-locus techniques.
Soft-Switching PWM Boost Chopper-Fed DC-DC Power Converter with Load Side Auxiliary Passive Resonant Snubber
Nakamura, Mantaro ; Ogura, Koki ; Nakaoka, Mutsuo ;
Journal of Power Electronics, volume 4, issue 3, 2004, Pages 161~168
This paper presents a new circuit topology of high-frequency soft switching commutation boost type PWM chopper-fed DC-DC power converter with a loadside auxiliary passive resonant snubber. In the proposed boost type chopper-fed DC-DC power converter circuit operating under a principle of ZCS turn-on and ZVS turn-off commutation, the capacitor and inductor in the auxiliary passive resonant circuit works as the lossless resonant snubber. In addition to this, the voltage and current peak stresses of the power semiconductor devices as well as their di/dt or dv/dt dynamic stress can be effectively reduced by the single passive resonant snubber treated here. Moreover, it is proved that chopper-fed DC-DC power converter circuit topology with an auxiliary passive resonant snubber could solve some problems on the conventional boost type hard switching PWM chopper-fed DC-DC power converter. The simulation results of this converter are illustrated and discussed as compared with the experimental ones. The feasible effectiveness of this soft witching DC-DC power converter with a single passive resonant snubber is verified by the 5kW, 20kHz experimental breadboard set up to be built and tested for new energy utilization such as solar photovoltaic generators and fuel sell generators.
AC and DC Applications of Induction Generator Excited by Static VAR Compensator
Ahmed, Tarek ; Nishida, Katsumi ; Nakaoka, Mutsuo ;
Journal of Power Electronics, volume 4, issue 3, 2004, Pages 169~179
This paper presents the steady-state analysis of the three-phase self-excited induction generator (SEIG). The three-phase SEIG with a squirrel cage rotor is driven by a variable-speed prime mover (VSPM) or a constant-speed prime mover (CSPM) such as a wind turbine or a micro gas turbine. Furthermore, a PI closed-loop feedback voltage regulation scheme of the three-phase SEIG driven by a VSPM on the basis of the static VAR compensator (SVC) is designed and evaluated for the stand-alone AC and DC power applications. The simulation and experimental results prove the practical effectiveness of the additional SVC with the PI controller-based feedback loop in terms of its fast responses and high performances
Synchronous PI Decoupling Control Scheme for DVR against a Voltage Sag in the Power System
Kim, Myung-Bok ; Lee, Seung-Hoon ; Moon, Gun-Woo ; Youn, Myung-Joong ;
Journal of Power Electronics, volume 4, issue 3, 2004, Pages 180~187
This paper proposes a new control strategy for the dynamic voltage restorer (DVR). It is based on a synchronous PI decoupling control strategy which features fast response time and low steady state error. Therefore, the proposed control strategy produces faster action time against voltage sag and guarantees more than enough compensation for reduced supply voltage. Experimental results, implemented with the TMS320C3
DSP control unit, are shown to validate the effectiveness of the proposed control strategy.
Efficient Simulation Method for Dielectric Barrier Discharge Load
Oleg, Kudryavtsev ; Ahmed, Tarek ; Nakaoka, Mutsuo ;
Journal of Power Electronics, volume 4, issue 3, 2004, Pages 188~196
The dielectric barrier discharge is recognized as one of the efficient methods of ultraviolet light generation and ozone production. As well, it is widely utilized for gaseous wastes neutralization and other technological processes in industry. This electrochemical reaction is electrically equivalent to a nonlinear capacitive load that represents some difficulties for designing the power supply. Therefore, a conventional power supply is designed for a drastically simplified model of the load and generally is not optimal. This paper presents a fast simulation approach for the nonlinear capacitive model representation of the dielectric barrier discharge load lamp. The main idea of the proposed method is to use analytical solutions of the differential state equations for the load and find the unknown initial conditions for the steady state by an optimization method. The derived expressions for the analytical solutions are rather complicated, however they greatly reduce the calculation time, which make sense when a deeper analysis is performed. This paper introduces the proposed simulation method and gives some examples of its application such as estimation of the load equivalent parameters and load matching conditions.