Proceedings of the KIPE Conference (전력전자학회:학술대회논문집)

The Korean Institute of Power Electronics (전력전자학회)
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A Study on the Power Factor Improvement of Single-Phase Bridgeless Voltage Doubler Converter

단상 브리지리스 배전압 변환기의 역률 개선에 관한 연구

  • Koo, Do-Yeon (Dept. of Electronics and Electrical Eng., Dankook University) ;
  • Kim, Dong-Wook (Dept. of Electronics and Electrical Eng., Dankook University) ;
  • Lim, Seung-Beom (Dept. of Electronics and Electrical Eng., Dankook University) ;
  • Hong, Soon-Chan (Dept. of Electronics and Electrical Eng., Dankook University)
  • 구도연 (단국대학교 전자전기공학과) ;
  • 김동욱 (단국대학교 전자전기공학과) ;
  • 임승범 (단국대학교 전자전기공학과) ;
  • 홍순찬 (단국대학교 전자전기공학과)
  • Published : 2011.11.25
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Abstract

PFC(Power Factor Correction) converters are commonly designed for CCM(Continuous Conduction Mode). However, DCM(Discontinuous Conduction Mode) appears in the input current near the ZCP(Zero Crossing Point) at light loads, resulting in input current distortion. It is caused by inaccurate average current values obtained in DCM. This paper studies a simple digital control scheme that can be operated in both CCM and DCM with minimal changes to the CCM average current control structure.

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