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Soft starting strategy of bidirectional LLC resonant DC-DC transformer based on phase-shift control

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Bidirectional LLC resonant DC-DC transformer (DCT) has the advantages of LLC resonant converter in achieving high efficiency and high power density, which features soft switching regardless of the direction of the power flow. Due to the existence of large filter capacitor, the inrush current is inevitable in the starting process. A improved soft start control strategy based on phase shift control is proposed by the analysis of gain characteristics of LLC resonant DCT. It can charge output capacitor gradually, build up output voltage smoothly and eliminate the inrush current effectively. The performance of the proposed control scheme is verified by simulation and experimental results.

Original languageEnglish
Title of host publicationProceedings of the 2014 9th IEEE Conference on Industrial Electronics and Applications, ICIEA 2014
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages318-322
Number of pages5
ISBN (Electronic)9781479943166
DOIs
StatePublished - 20 Oct 2014
Externally publishedYes
Event9th IEEE Conference on Industrial Electronics and Applications, ICIEA 2014 - Hangzhou, China
Duration: 9 Jun 201411 Jun 2014

Publication series

NameProceedings of the 2014 9th IEEE Conference on Industrial Electronics and Applications, ICIEA 2014

Conference

Conference9th IEEE Conference on Industrial Electronics and Applications, ICIEA 2014
Country/TerritoryChina
CityHangzhou
Period9/06/1411/06/14

Keywords

  • DC-DC transformer
  • LLC resonant converter
  • bidirectional power conversion
  • soft start

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