Effects of imperfect sinusoidal input currents on the performance of a boost PFC pre-regulator

Martin K.H. Cheung, Martin H.L. Chow, Y. M. Lai, Ka Hong Loo

Research output: Journal article publicationJournal articleAcademic researchpeer-review

5 Citations (Scopus)


This paper investigates the effects of applying different input current waveshapes on the performance of a continuous-conduction-mode (CCM) power-factor-correction (PFC) boost pre-regulator. It is found that the output voltage ripple of the pre-regulator can be reduced if the input current is modified to include controlled amount of higher order harmonics. This finding allows us to balance the performance of output regulation and the harmonic current emission when coming to the design of the pre-regulator. An experimental PFC boost pre-regulator prototype is constructed to verify the analysis and show the benefit of the pre-regulator operating with input current containing higher order harmonics.
Original languageEnglish
Pages (from-to)689-698
Number of pages10
JournalJournal of Power Electronics
Issue number5
Publication statusPublished - 1 Jan 2012


  • Average current-mode control
  • Boost converter
  • Continuous-conduction-mode (CCM)
  • Harmonic distortion
  • Load transient
  • Power factor correction

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering


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