Practical design and evaluation of a 1 kW PFC power supply based on reduced redundant power processing principle

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

Research output: Journal article publicationJournal articleAcademic researchpeer-review

48 Citations (Scopus)


Using the reduced redundant power processing (R2P2) principle, a single-phase power-factor correction (PFC) power supply can achieve a higher overall efficiency as a result of the use of a noncascading structure that involves less repeated processing of the input power. This paper investigates a single-phase noncascading PFC power supply based on the (R2P2) principle. The circuit employs a current-fed full-bridge converter as the PFC preregulator, and a buck-boost converter as the voltage regulator. This paper addresses the design of this noncascading PFC power supply and in particular the relationships between the gained efficiency, the transient response and the size of the energy storage. Experimental results obtained from a 1 kW laboratory prototype are presented.
Original languageEnglish
Pages (from-to)665-673
Number of pages9
JournalIEEE Transactions on Industrial Electronics
Issue number2
Publication statusPublished - 1 Feb 2008


  • Buck-boost converter
  • Continuous conduction mode (CCM)
  • Current-fed full-bridge converter
  • Noncascading structure
  • Power factor correction (PFC)

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Instrumentation

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