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커패시터 필터를 갖는 3 상 다이오드 정류회로의 불평형전원에서의 입력전류 특성
이동기(Dong-Gei Lee),박기원(Gei won Park),정승기(Seong Gei Jung) 전력전자학회 2001 전력전자학술대회 논문집 Vol.2001 No.7
The three-phase diode rectifier with capacitive filter is highly-sensitive to line voltage unbalance. Because of its inherent nonlinear characteristics, small line voltage unbalance may cause highly unbalanced line current, causing detrimental effects on power quality This paper presents a theoretical basis on this 'unbalance amplification effect' and derives an analytical model of line current characteristics under unbalanced line voltage condition for various modes of operatioa The results provide a basic and important guideline for optimal design of a three-phase diode rectifier with capacitive filter that is most commonly used for interfacing various power conversion equipments to power lines.