Analysis and implementation of a bridgeless sepic AC/DC converter with power factor correction and extended gain

Yi Hung Liao, Jia Yi Jhu

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

5 Scopus citations

Abstract

In this paper, a bridgeless Sepic AC/DC converter is proposed. The absence of an input rectifier bridge can reduce the conduction loss and the proposed topology separates the input PFC current and output current, which reduces the switch current stress and improves system thermal management compared with the traditional Sepic converter. In addition, the switches in the proposed topology all have semi-soft switching function to reduce the switching losses. Furthermore, the proposed converter has an output voltage multiplier stage. Based on the circuit analysis, a feasible control scheme is developed to achieve better input current shaping and output voltage regulation. Finally, a prototype system is constructed and the control scheme is implemented using DSP TMS320F28335. Both simulation and experimental results verify the validity of the proposed bridgeless Sepic AC/DC converter and the feasible control scheme.

Original languageEnglish
Title of host publication2017 IEEE Applied Power Electronics Conference and Exposition, APEC 2017
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages416-423
Number of pages8
ISBN (Electronic)9781509053667
DOIs
StatePublished - 17 May 2017
Event32nd Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2017 - Tampa, United States
Duration: 26 Mar 201730 Mar 2017

Publication series

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

Conference

Conference32nd Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2017
Country/TerritoryUnited States
CityTampa
Period26/03/1730/03/17

Keywords

  • Bridgeless
  • Power factor correction
  • Sepic AC/DC converter
  • Voltage multiplier
  • Zero-voltage switching (ZVS)

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