Bridgeless half-bridge AC-DC converter with series-connected two transformers

  • Hyoung Sup Cho
  • , Ju Seung Yoo
  • , Jae Yeon Choi
  • , Min Kwon Yang
  • , Woo Young Choi

Research output: Contribution to conferenceConference paperpeer-review

Abstract

This paper proposes a bridgeless half-bridge ac-dc converter with series-connected two transformers. The proposed converter integrates the operation of the bridgeless power factor correction (PFC) boost rectifier and the asymmetrical pulse-width modulation half-bridge dc-dc converter. The proposed converter provides an isolated dc output voltage without any full-bridge diode rectifier. Conduction losses are lowered by eliminating the full-bridge diode rectifier. Switching losses are reduced by achieving zero-voltage switching of the power switches. To improve the power efficiency of the bridgeless half-bridge ac-dc converter, this paper presents the study results about the bridgeless half-bridge ac-dc converter with the series-connected two transformers. By using series-connected two transformers, the proposed convert has a simpler power circuit. The proposed converter gives a high efficiency, high power factor, and low cost. The proposed converter achieves a high efficiency of 93.5 % for 250 W (50 V / 5 A) output power at 90 Vrms line voltage.

Original languageEnglish
Title of host publication2013 28th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2013
Pages3241-3245
Number of pages5
DOIs
StatePublished - 2013
Event28th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2013 - Long Beach, CA, United States
Duration: 2013.03.172013.03.21

Publication series

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

Conference

Conference28th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2013
Country/TerritoryUnited States
CityLong Beach, CA
Period13.03.1713.03.21

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 7 - Affordable and Clean Energy
    SDG 7 Affordable and Clean Energy

Quacquarelli Symonds(QS) Subject Topics

  • Engineering - Electrical & Electronic
  • Engineering - Petroleum

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