Proceedings of the KIPE Conference (전력전자학회:학술대회논문집)

The Korean Institute of Power Electronics (전력전자학회)
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Input Current Characteristics of a Three-Phase Diode Rectifier with Capacitive Filter Under Line Voltage Unbalance Condition

커패시터 필터를 갖는 3상 다이오드 정류회로의 불평형전원에서의 입력전류 특성

  • Lee Dong-Gei (Dept. of Electrical Engineering. Kwangwoon University) ;
  • Park Gei won (Dept. of Electrical Engineering. Kwangwoon University) ;
  • Jung Seong Gei (Dept. of Electrical Engineering. Kwangwoon University)
  • 이동기 (광운대학교 전기공학과) ;
  • 박기원 (광운대학교 전기공학과) ;
  • 정승기 (광운대학교 전기공학과)
  • Published : 2001.07.01
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Abstract

The three-phase diode rectifier with capacitive Inter 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 operation. 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.

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