Power factor improvement of flyback PFC converter operating at the light load

Minsung Kim, Oscar Andres Montes, Sungho Son, Yoon Geol Choi, Minjae Kim

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

7 Scopus citations

Abstract

We propose a duty-ratio feed-forward controller for flyback power factor correction (PFC) converters operating in discontinuous conduction mode (DCM). For PFC applications, the power factor (PF) of the input current must be high under most load conditions. To improve PF of the flyback converter even under light load, we propose a compensation method for input capacitor current. The proposed controller significantly improves the displacement factor as well as the distortion factor, and therefore fly-back PFC converter can achieve the high power quality. Meanwhile, the output voltage of the PFC converter is well regulated. The derivation of the proposed method is presented and effectiveness of the proposed method is demonstrated in experiments with a 100-W rated power prototype.

Original languageEnglish
Title of host publication34th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages3019-3023
Number of pages5
ISBN (Electronic)9781538683309
DOIs
StatePublished - 24 May 2019
Event34th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2019 - Anaheim, United States
Duration: 17 Mar 201921 Mar 2019

Publication series

NameConference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC
Volume2019-March

Conference

Conference34th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2019
Country/TerritoryUnited States
CityAnaheim
Period17/03/1921/03/19

Keywords

  • Capacitor current
  • Feed-forward controller
  • Power factor improvement
  • Single-stage PFC
  • Total harmonic distortion

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