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한병문(Byung-Moon Han),박덕희(Duk-Hee Park),백승택(Seung-Taek Baek),김희중(Hee-Joong KIM),소용철(Yong-Chul Soh),김현우(Hyun-Woo Kim) 전력전자학회 1999 전력전자학술대회 논문집 Vol.- No.-
This paper proposes an SSSC based on multi-bridge inverters. The dynamic characteristic of the proposed SSSC was analyzed by EMTP simulation, assuming that the SSSC is inserted in the transmission line of the one-machine-infinite-bus power system. The proposed SSSC has 6 multi-bridge inverters per phase, which generates 13 pulses for each half period of power frequency. The proposed SSSC generates a quasi-simusoidal output voltage by 90 degree phase shift to the line current The proposed SSSC does not require the coupling transformer for voltage injection, and has a flexibility in operation voltage by increasing the number of series connection.
한병문(Byung-Moon Han),박덕희(Duk-Hee Park),박지용(Ji-Yong Park) 전력전자학회 1998 전력전자학술대회 논문집 Vol.- No.-
Abstract - This paper describes a simulation model to analyze the dynamic performance of Unified Power Flow Controller, winch adjust flexibly the active and reactive power flow through the ac transmission line.<br/> The basic operation was analyzed in detail using equivalent circuits and the design of control system was developed using vector control method. A simulation model with EMTP code was conceived to evaluate the performance of the Unified power Flow Controller The simulation results show that the developed simulation model
다이오드 정류기와 인버터를 이용한 순간 전압 강하 보상기
이준기(Joan-Gee Lee),박덕희(Duk-Hee Park),김희중(Hee-joong Kim),한병문(Byung-Moon Han),소용철(Yong-Chul Soh) 전력전자학회 1999 전력전자학술대회 논문집 Vol.1999 No.7
This paper describes controller development for a dynamic voltage compensator using a shunt diode converter and series inverter. The control system was designed using 1/4 period integrator and vector relationship between the supply voltage and load voltage. A simulation model and scaled hardware model were developed for analyzing performance of the controller and the whole system Both results confirm that the dynamic compensator can restore the load voltage under the fault of the distribution system