Digital voltage control of boost CRM PFC AC/DC converters with TRIAC Phase Control dimmer

Chih Wei Lin*, Ying-Yu Tzou

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Scopus citations

Abstract

This paper presents a digital voltage control scheme for boost critical conduction mode (CRM) power-factor-correction (PFC) AC/DC converters with TRIAC phase control dimmer to use in the lighting equipment ex. LED or fluorescent lamp. The TRIAC is a standard type of dimmer and work fine with resistive load such as ordinary Tungsten filament light bulb (incandescent lamp), however, for non-resistive lighting sources, a well-designed AC-DC converter must be designed to provide good power quality as well as wide linear non-flickering dimming control range. A variable PFC output voltage modulation method is proposed to enhance the dimming control range. The TRIAC dimmer will cause switching oscillations due to the PFC input filter, a damper circuit is designed to minimize this effect. The proposed control scheme has been verified by using simulation software PSIM in applications to a 50 W prototype of boost CRM PFC AC/DC converter with TRIAC phase control dimmer. Simulation and experimental results are given to illustrate the feasibility of the proposed control scheme.

Original languageEnglish
Title of host publication2012 IEEE International Conference on Power System Technology, POWERCON 2012
DOIs
StatePublished - 1 Dec 2012
Event2012 IEEE International Conference on Power System Technology, POWERCON 2012 - Auckland, New Zealand
Duration: 30 Oct 20122 Nov 2012

Publication series

Name2012 IEEE International Conference on Power System Technology, POWERCON 2012

Conference

Conference2012 IEEE International Conference on Power System Technology, POWERCON 2012
CountryNew Zealand
CityAuckland
Period30/10/122/11/12

Keywords

  • AC/DC converter
  • Power-factor-correction (PFC)
  • critical conduction mode (CRM)
  • digital control
  • incandescent lamp
  • phase dimming control (TRIAC)

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    Lin, C. W., & Tzou, Y-Y. (2012). Digital voltage control of boost CRM PFC AC/DC converters with TRIAC Phase Control dimmer. In 2012 IEEE International Conference on Power System Technology, POWERCON 2012 [6401380] (2012 IEEE International Conference on Power System Technology, POWERCON 2012). https://doi.org/10.1109/PowerCon.2012.6401380