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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 3, Issue 4 - Oct 2003
Volume 3, Issue 3 - Jul 2003
Volume 3, Issue 2 - Apr 2003
Volume 3, Issue 1 - Jan 2003
Selecting the target year
Performance Evaluations of Digitally-Controlled Auxiliary Resonant Commutation Snubber-Assisted Three Phase Voltage Source Soft Switching Inverter
Hiraki, Eiji ; Nakaoka, Mutsuo ;
Journal of Power Electronics, volume 3, issue 1, 2003, Pages 1~9
This paper presents a performance analysis of typical Auxiliary Resonant Commutation Snubber-assisted three phase voltage source soft switching inverter which can operate under a condition of Zero Voltage Switching (ZVS) using a digital control scheme which is suitable for high power applications compared with resonant DC link snubber assisted soft switching inverter. The system performances of this inverter are illustrated and evaluated on the basis of experimental results.
Real-Time Implementation of On-Line Trained Neuro-Controller for a BLDC Motor
Salem, M.M. ; Zahran, M.B. ; Atia, Yousry ; Zaki, A.M. ;
Journal of Power Electronics, volume 3, issue 1, 2003, Pages 10~16
Implementation and experimental verification of a simple neuro-controller (SNC) as a speed controller for a brush less DC (BLDC) motor is presented. The SNC with one weight and a linear hard limit activation function is trained on-line using the back propagation algorithm. A modified error function is used to ensure good performance during the on-line training, which has been used without previous off-line training. The SNC has been implemented using a computer-interface card mounted on a PC. The driving system performance has been investigated by a number of experimental tests for a variety of input reference speed trajectories.
Active Front End Inverter with Quasi - resonance
Siebel, Henrik ; Pacas, J.M. ;
Journal of Power Electronics, volume 3, issue 1, 2003, Pages 17~23
A new three-phase soft-switching active front-end inverter is presented. The topology consists of a quasi-resonant PWM boost converter with an additional resonant branch, which provides low loss at high frequency operation. This leads to a high conversion efficiency and a remarkable reduction in the siBe of the input inductor. To synchronise the PWM pattern with the resonance cycle, a modified space vector modulation with asymmetrical PWM pattern is used. A high power factor can be achieved for both power flow directions. Due to a new control strategy the converter features a low content of harmonics in the line currents even for distorted line voltages.
Multi-Step Commutation and Control Policies for Matrix Converters
Hofmann, Wilfried ; Ziegler, Marcus ;
Journal of Power Electronics, volume 3, issue 1, 2003, Pages 24~32
The commutation and control in matrix converters is more complicated as in voltage source converters. Natural freewheeling paths do not exist and the theoretic absent storage elements result in a direct coupled system of load and line currents as well as voltages. The paper offers an overview about staggered commutation and control policies in matrix converters. Based on the knowledge about load current direction and the signs of the line to line input voltages different multi-step commutation policies were derived. This paper examines the application of that policies in the case of space vector modulation and direct control methods with the focus on the resulting effects to the reference output voltage deviation.
Self-Commissioning for Surface-Mounted Permanent Magnet Synchronous Motors
Urasaki, Naomitsu ; Senjyu, Tomonobu ; Uezato, Katsumi ;
Journal of Power Electronics, volume 3, issue 1, 2003, Pages 33~39
This paper presents the self-commissioning for surface-mounted permanent magnet synchronous motor. The proposed strategy executes three tests with a vector controlled inverter drive system. To do this, synchronous d-q axes currents are appropriately controlled for each test. From the three tests, armature resistance, armature inductance, equivalent iron loss resistance, and emf coefficient are identified automatically. The validity of the proposed strategy is confirmed by experimental results.
A Study on Photovoltaic/Wind/Diesel Hybrid Power System
Jeong, Byung-Hwan ; Cho, Jun-Seok ; Gho, Jae-Seok ; Choe, Gyu-Ha ; Kim, Eung-Sang ; Lee, Chang-Sung ;
Journal of Power Electronics, volume 3, issue 1, 2003, Pages 40~48
In this paper, a hybrid power system with photovoltaic/wind/diesel generators is proposed to solve the defect of stand-alone type power system in a remote area. A hybrid power system has a power-balanced controller to equilibrate generation power with a given load demand and which is composed of common DC power system. To execute a power-balanced control, a hybrid power system is assumed that all of power generators have the characteristics of an equivalent current-source and load sharing control technique must be needed at the same time. So this paper discusses the structure of power-balance control for hybrid power system. And through the results of simulation, the proposed scheme was verified.
Single Electronic Drive Controlling Two Synchronous Motors Via Modified Vector Control
Danbing Seto ; Fanping Sun ; Jacek F. Gieras ; Norbert A.M. Hootsmans ;
Journal of Power Electronics, volume 3, issue 1, 2003, Pages 49~54
A novel control scheme of using a single electronic drive to synchronize two synchronous motors is investigated analytically. The developed control strategy extends the conventional vector control technology, Specifically, it utilizes the property that the motion of two motors can be independently controlled by the q-axis currents provided the desired q-axis currents can be achieved by adjusting physical armature currents. The latter part is indeed guaranteed by adding a position offset to one of the motors. This work has a potential of cost saving in practice where the cost of drive is a major concern.
P-Q Circle Diagram Based Parameter Measurement for Permanent Magnet Synchronous Motor Including Iron Loss
Urasaki, Naomitsu ; Senjyu, Tomonobu ; Uezato, Katsumi ;
Journal of Power Electronics, volume 3, issue 1, 2003, Pages 55~61
This paper presents parameter measurement for permanent magnet synchronous motors based on the P-Q circle diagram. Three electrical parameters of permanent magnet synchronous motors, i.e., the equivalent iron loss resistance, armature inductance, and electrical motive force (emf) coefficient are simultaneously measured. The advantages of this method are that it can be implemented under constant excitation and it dispenses with the generating test for the emf coefficient. The proposed method is applied to a 160w permanent magnet synchronous motor, and then the measurement results are analyzed.
Analysis of PWM Converter for V-I Output Characteristics of Solar Cell
Han, Jeong-Man ; Jeong, Byung-Hwan ; Gho, Jae-Seok ; Choe, Gyu-Ha ;
Journal of Power Electronics, volume 3, issue 1, 2003, Pages 62~67
Recently, photovoltaic system has been studied widely as a renewable energy system, because it does not produce environmental pollution and it has infinity energy source from the sun. A study on photovoltaic system has a lot of problems like as reappearance and repetition of some situation in the laboratory experiment for development of MPPT algorithm and islanding detection algorithm. because output characteristics of solar cell are varied by irradiation and surface temperature of solar cell. Therefore, the assistant equipment which emulates the solar cell characteristics which can be controlled arbitrarily by researcher is require to the researchers for reliable experimental data. In this paper, the virtual implement of solar cell (VISC) system is proposed to solve these problems and to achieve reliable experimental result on photovoltaic system. VISC system emulates the solar cell output characteristics, and this system can substitute solar cell in laboratory experiment system. To realize the VISC, mathematical model of solar cell is studied for driving converter and the DC/DC converters are compared in viewpoint of tracking error using computer simulation. Output dynamic characteristic of PV array is varied by irradiation and PWM converter performance is studied using PSIM simulator.