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A hybrid switching scheme for LLC series-resonant half-bridge DC-DC converter in a wide load range

  • Woo Young Choi*
  • , Bong Hwan Kwon
  • , Jih Sheng Lai
  • *Corresponding author for this work
  • Virginia Polytechnic Institute and State University
  • Pohang University of Science and Technology

Research output: Contribution to conferenceConference paperpeer-review

Abstract

This paper presents a hybrid switching scheme for LLC series-resonant half-bridge (SRHB) dc-dc converter. The concept of the proposed hybrid switching scheme is changing the switching mode to improve power efficiency in a wide load range. The SRHB converter operates in three different switching modes depending on the output load condition. Digital control of the system facilitates the implementation of the proposed hybrid switching scheme. High efficiency is achieved with a constant output voltage over wide load range. Experimental results on a 5 kW prototype are presented to evaluate the feasibility of the proposed switching scheme for the SRHB converter.

Original languageEnglish
Title of host publicationAPEC 2010 - 25th Annual IEEE Applied Power Electronics Conference and Exposition
Pages1494-1497
Number of pages4
DOIs
StatePublished - 2010
Event25th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2010 - Palm Springs, CA, United States
Duration: 2010.02.212010.02.25

Publication series

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

Conference

Conference25th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2010
Country/TerritoryUnited States
CityPalm Springs, CA
Period10.02.2110.02.25

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