Interleaved LLC series converter with output voltage doubler

Bor Ren Lin, Wen Ren Yang, Jyun Ji Chen, Chien Lan Huang, Ming Hung Yu

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

17 Citations (Scopus)

Abstract

A parallel LLC series resonant converter with output voltage doubler is presented in this paper. The interleaved pulse-width modulation (PWM) technique is adopted to reduce the ripple current on input and output capacitors. The capacitance of input and output capacitors can be reduced. The high current stress drawback of conventional LLC resonant converter is overcome by the proposed converter. Thus the adopted converter can be applied for high output current applications. Based on the series resonant behavior, all power switches are turned on at zero voltage switching (ZVS) and the rectifier diodes can be turned off at zero current switching (ZCS). Thus the switching losses on power semiconductors are reduced. In the output side, the voltage doubler topology is adopted for high output voltage applications. Compared with the conventional LLC converter, the advantages of the proposed circuit are low ripple currents on input and output terminals, small size and light weight of transformer, and low conduction losses on power semiconductors. In this paper, the principle of operation, steady state analysis and design consideration of the proposed converter are provided and discussed. In order to validate the proposed converter, the laboratory experiments with 24V/40A output for server power supply were provided.

Original languageEnglish
Title of host publication2010 International Power Electronics Conference - ECCE Asia -, IPEC 2010
Pages92-98
Number of pages7
DOIs
Publication statusPublished - 2010 Sep 17
Event2010 International Power Electronics Conference - ECCE Asia -, IPEC 2010 - Sapporo, Japan
Duration: 2010 Jun 212010 Jun 24

Publication series

Name2010 International Power Electronics Conference - ECCE Asia -, IPEC 2010

Other

Other2010 International Power Electronics Conference - ECCE Asia -, IPEC 2010
CountryJapan
CitySapporo
Period10-06-2110-06-24

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All Science Journal Classification (ASJC) codes

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

Cite this

Lin, B. R., Yang, W. R., Chen, J. J., Huang, C. L., & Yu, M. H. (2010). Interleaved LLC series converter with output voltage doubler. In 2010 International Power Electronics Conference - ECCE Asia -, IPEC 2010 (pp. 92-98). [5543842] (2010 International Power Electronics Conference - ECCE Asia -, IPEC 2010). https://doi.org/10.1109/IPEC.2010.5543842