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김현수(H.S.Kim),김한종(H.J.Kim),허재영(J.Y.Hur),최창식(C.S.Choi),이제필(J.P.Lee),장철호(C.H.Jang),정종태(J.T.Jeong) 전력전자학회 1997 전력전자학술대회 논문집 Vol.1997 No.-
In large power system, design margin makes relatively price higher. So, optimal design through exact analysis of thermal behavior is needed. In this paper, we propose the equivalent load test facility using two inverter & converter system and inductors. Applying actual electrical profiles for motor drive, thermal characteristics of power converter fed AC motor drive are obtained, and the results are compared with simulation results.
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.