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위상 검출기 편차 보상 알고리즘을 이용한 PWM컨버터 성능개선
이근호(G.B. Lee),윤길문(K.M. Yoon),정연우(Y.W. Jung),김한종(H.j. Kim),이제필(J.P. Lee) 전력전자학회 1999 전력전자학술대회 논문집 Vol.1999 No.7
In the 3-phase PWM converter, accurate detection of the supplied voltage phase is very important. But a detecting circuit cannot avoid generating the deviation of phase detector so that we need to compensate it. In this paper, an accurate and simple compensating method of deviation of phase detector is proposed.
장철호(C.H. Jang),이근호(G.H. Lee),허재영(J.Y. Hur),강동우(D.W. Gang),윤길문(G.M.Yoon),신정기(J.G. Shin),이제필(J.P. Lee) 전력전자학회 1999 전력전자학술대회 논문집 Vol.1999 No.7
Line starting using contactors is a conventional method for escalator system Recently, comsumer's requirements for energy saving and variable functions are increasing To satisfy this demands, LG Industrial Systems Co., Ltd. has developed an escalator which is driven by inverter system.<br/> In this paper, technical schemes of the developed escalator are introduced and the performance of the proposed system is proved by experiment.