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인버터 아크용접기를 위한 3상 승압/강압형 컨버터의 운전특성비교
최해룡(H.R. Choi),구영모(Y.M. Goo),채영민(Y.M. Chae),최규하(G.H. Choe),목형수(H.S. Mok),김규식(K.S. Kim),원충연(C.Y. Won) 전력전자학회 1998 전력전자학술대회 논문집 Vol.- No.-
Three phase Boost/Buck converter which have economical merits and simple control scheme, are analyzed and evaluated through comparative methods and digital simulation for equivalent load Those play a part of voltage boost/buck as well as power factor correction with single switch. Controller operating in constant and variable frequency is used for rapid output response and stable system condition respectively Moreover low THD property of single switched converter is available for inverter arc welding machine known as high power and low power factor. So in this paper a comparison of the characteristics in boost and buck converter is described and then simulation results conforms the merits from the point of view of power factor and voltage regulator.<br/> <br/>