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A Study on the Application of the DVR System using EMTDC Simulation
최영도(Y. D. Choy),곽노홍(N. H. Kwak),전영수(Y. S. Jeon),전동훈(D. H. Jeon) 전력전자학회 2008 전력전자학술대회 논문집 Vol.- No.-
Recently, the interest on power quality has been hot issue because the equipments cause voltage disturbance and become more sensitive to the voltage disturbance. The DVR(Dynamic Voltage Restorer) is one of the Custom Power Device that can compensate the voltage. DVR operates as a series connected compensator whose output voltage can be controlled system voltage. And the magnitude of compensation voltage is limited by the characteristics of system and load. Compensation capability of DVR was simulated by EMTDC under several condition. This paper analyzed effect of DVR's compensation at power quality test center which has SSFG(Sag, swell, and Flicker Generator, CPDs(SSTS, DVR, DSTATCOM), and loads.
저주파 유도가열 장치용 싸이리스터 PWM 정류기의 특성분석
윤동철(D.C. Yoon),이경빈(K.B. Lee),최영도(Y.D. Choy),백승택(S.T. Beak),한병문(B.M. Han),소용철(Y.C. Soh) 전력전자학회 2001 전력전자학술대회 논문집 Vol.2001 No.7
This paper proposes a new induction heating system composed of a thynstor PWM rectifier with a resonant commutation circuit. The operation of proposed system as first analyzed by a theoretical approach with equivalent circuits. And its verification was performed by computer simulations with EMTP. The proposed system can provide a solution for the power factor problem of the existing high-power induction heating system, which uses the line-commutated thyristor bridge in rectifier side.