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Twin converter를 이용한 전자식 안정기에 관한 연구
이상집(Sang-Chip Lee),한홍일(Hong-Il Han),성낙규(Nark-Kuy Sung),백동현(Dong-Hyun Baek),김성남(Sung-Nam Kim),한경희(Kyung-Hee Han) 전력전자학회 2000 전력전자학술대회 논문집 Vol.2000 No.11
The rectifier circuit has been used in the various fields of inverter progress. This is simple and low price. Otherwise, it has many problems in harmonic, low power factor and etc.<br/> This paper use the twin converter of two jewel booster. It doesn't need the detection of voltage, current and control PWM. The twin converter has stably the rectification source. Also, the circuit is used a half-bridge inverter in the electronic ballast for lighting. Therefore, this method is confirmed in high efficiency.
한홍일,함년근,성낙규,이승환,이훈구,오봉환,한경희 명지대학교 산업기술연구소 2001 産業技術硏究所論文集 Vol.20 No.-
PWM converter has better power factor and low harmonic components than conventional diode rectifiers and phase controlled rectifier. Also the DC link voltage can be regulated fast and stable against the variation in the load. In order to regulate for DC link voltage, rapid current control is need for source current control. This paper focuses on the improvement of quickness of current controller to know the transient state characteristics of regulated DC link voltage against the variation in the load. To do this, it is adopted to three phase voltage type PWM converter with space vector pulse width modulation(SVPWM) method and synchronously rotating d, q axis current. Each d, q axis current is controlled independently. To control d, q axis current, Current control methods to be applied in system are PI current control and Predictive current control respectively. As a result, Transient response characteristic of Predictive current controller is superior to PI current controller.
이제환,전기영,조정민,한홍일,한경희 明知大學校 産業技術硏究所 2000 産業技術硏究所論文集 Vol.19 No.-
Average-current mode controlled boost rectifier is most universally used at present, While the method gives high power factor, low harmonics distortion, has drawbacks such as 3-feedback loop, complex component, difficulty of control-circuit design, and high cost. Research for improving these problem has been carried out, and Nonlinear Carrier(NLC) Control method is representative. This control method has easy algorithm for control, and its feedback loop and control components are reduced. In this paper, the control method was evaluated by simulation through Matlab/Simulink, and experimented with 550W boost rectifier. As the result, that can get high power factor above 0.95 and low harmonic distortion was confirmed. Also, a good dynamic response on line and load variation was confirmed.