A novel secondary PWM-controlled interleaved LLC resonant converter for load current sharing

Mitsuru Sato, Reo Takiguchi, Jun Imaoka, Masahito Shoyama

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

13 Citations (Scopus)

Abstract

The interleaved LLC series resonant converter (LLC-SRC) is required to fulfill the demand for high power capacity, high power density and high efficiency. However, when interleaved LLC-SRCs in each module are operated at the same switching frequency, load unbalance problem occurs due to the component tolerances of the resonant ranks. In consequence, the reliability of the converter is decreased due to increased secondary current ripple. In order to solve this problem, this paper proposes a novel load current sharing method for the resonant tank gain mismatches in each phase. The proposed load current sharing method can be implemented by controlling the turn-on timing of the secondary synchronous switches. The load current can be shared equally in each module, even if the converters in each phase are operated at the same switching frequency. In order to verify proposed method, the experiments are executed on a 500W prototype.

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.
Pages2276-2280
Number of pages5
ISBN (Electronic)9781509012107
DOIs
Publication statusPublished - Jul 13 2016
Event8th IEEE International Power Electronics and Motion Control Conference, IPEMC-ECCE Asia 2016 - Hefei, China
Duration: May 22 2016May 26 2016

Other

Other8th IEEE International Power Electronics and Motion Control Conference, IPEMC-ECCE Asia 2016
CountryChina
CityHefei
Period5/22/165/26/16

All Science Journal Classification (ASJC) codes

  • Energy Engineering and Power Technology
  • Control and Systems Engineering
  • Electrical and Electronic Engineering
  • Control and Optimization

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    Sato, M., Takiguchi, R., Imaoka, J., & Shoyama, M. (2016). A novel secondary PWM-controlled interleaved LLC resonant converter for load current sharing. In 2016 IEEE 8th International Power Electronics and Motion Control Conference, IPEMC-ECCE Asia 2016 (pp. 2276-2280). [7512652] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/IPEMC.2016.7512652