A family of PFC voltage regulator configurations with reduced redundant power processing

Chi Kong Tse, Martin H L Chow, Martin K H Cheung

Research output: Journal article publicationJournal articleAcademic researchpeer-review

157 Citations (Scopus)


This paper discusses a systematic method for deriving basic converter configurations that achieve power factor correction (PFC) and voltage regulation. The discussion begins with a general three-port representation of power supplies that provide PFC and voltage regulation. Based on this representation and a power flow consideration, a systematic procedure is derived to generate all possible minimal configurations. Among these configurations, only a few have been known previously and used in practice. It is found that the efficiency of PFC voltage regulators can be improved by reducing the amount of redundant power to be processed by the constituent converters. A systematic circuit synthesis procedures is proposed for creating PFC voltage regulators with reduced redundant power processing. Experimental measurements verify the improved efficiency.
Original languageEnglish
Pages (from-to)794-802
Number of pages9
JournalIEEE Transactions on Power Electronics
Issue number6
Publication statusPublished - 1 Nov 2001


  • Circuit synthesis
  • Power factor correction
  • Switching converters
  • Topologies

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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