Design and implementation of a half-bridge dual LLC converter with symmetrical autotransformer

Ke Ming Chen, Tsorng-Juu Liang, Shih Ming Chen, Shih Wen Tsai

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

Abstract

In this paper, a half-bridge dual LLC converter with symmetrical autotransformer is proposed. The advantages of the proposed converter are that the dual LLC resonant tanks and symmetrical autotransformer can reduce the current stress of components, achieve high efficiency, and increase step-down conversion ratio and high power density. All active switches are turned on at ZVS and rectifier diodes are turned off at ZCS with wide load conditions. The operating principle and steady-state analysis are proposed. To verify the analysis, a laboratory prototype dual LLC resonant converter with input voltage of 400V and output 24V/21A is implemented. The maximum efficiency of the proposed converter is 93.4%.

Original languageEnglish
Title of host publication2014 IEEE Energy Conversion Congress and Exposition, ECCE 2014
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages4735-4741
Number of pages7
ISBN (Electronic)9781479956982
DOIs
Publication statusPublished - 2014 Nov 11

Publication series

Name2014 IEEE Energy Conversion Congress and Exposition, ECCE 2014

All Science Journal Classification (ASJC) codes

  • Fuel Technology
  • Energy Engineering and Power Technology

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