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Asymmetric half-bridge resonant converter having a reduced conduction loss for DC/DC power systems with a low input voltage

  • Yeonho Jeong
  • , Jae Bum Lee
  • , Cheol O. Yeon
  • , Cheon Yong Lim
  • , Jung Kyu Han
  • , Gun Woo Moon
  • Korea Advanced Institute of Science and Technology
  • Power Development Team

Research output: Contribution to conferenceConference paperpeer-review

Abstract

A new asymmetric half-bridge (HB) resonant converter for DC/DC power system with a low and wide input voltage is proposed in this paper. The proposed converter is based on the switch integration technique, merging the Active-Clamp Forward (ACF) circuit and the HB LLC resonant converter. By adopting the ACF circuit in front of the HB LLC resonant converter, higher input voltage of LLC resonant converter stage can be achieved. As a result, the primary conduction loss can be significantly reduced. In addition, an asymmetric pulse width modulation (APWM) control is applied to cover wide input voltage range and to mitigate the design limitation for a high efficiency and. Consequently, the proposed converter can achieve not only the small conduction loss and the optimal design for high efficiency, but also high power density and low cost due to the switch integration technique. The validity of the proposed converter is confirmed by the experimental results of a prototype converter with 36-72VDC input and 300W (12V/25A) output.

Original languageEnglish
Title of host publication2016 IEEE 8th International Power Electronics and Motion Control Conference, IPEMC-ECCE Asia 2016
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages621-628
Number of pages8
ISBN (Electronic)9781509012107
DOIs
StatePublished - 2016.07.13
Event8th IEEE International Power Electronics and Motion Control Conference, IPEMC-ECCE Asia 2016 - Hefei, China
Duration: 2016.05.222016.05.26

Publication series

Name2016 IEEE 8th International Power Electronics and Motion Control Conference, IPEMC-ECCE Asia 2016

Conference

Conference8th IEEE International Power Electronics and Motion Control Conference, IPEMC-ECCE Asia 2016
Country/TerritoryChina
CityHefei
Period16.05.2216.05.26

Keywords

  • Asymmetric half-bridge resonant converter
  • DC/DC server power system
  • LLC resonant converter
  • Low input voltage
  • high voltage gain

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