Implementation of Three-Phase Bidirectional Isolated DC-DC Converter with Improved Light-Load Efficiency

N. Syahira M. Sharifuddin, Nadia M.L. Tan, C. L. Toh, Ahmad Qisti Ramli

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

Abstract

Phase-Shift Modulation (PSM) strategy had been widely used in Three-Phase Bidirectional Isolated DC-DC Converter (3P-BIDC). Nevertheless, this conventional high frequency PSM method is more suitable for medium and rated load application. In light-load conditions (0-0.3 p.u.), the power efficiency may drop to less than 65%. Thus, this paper proposes an enhanced switching strategy by introducing a low frequency burst-mode signal to control the number of active PSM cycle over one burst cycle. A 150-V, 1.5-kW, 3P-BIDC prototype is developed for laboratory testing. This prototype is first evaluated with the conventional PSM strategy for wide range of loads. Then the proposed method is applied for light-load condition evaluation. The experimental results prove that an average of 90% power efficiency could be achieved under light load condition.

Original languageEnglish
Title of host publicationIEACon 2021 - 2021 IEEE Industrial Electronics and Applications Conference
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages224-229
Number of pages6
ISBN (Electronic)9781728192536
DOIs
Publication statusPublished - 2021
Event2nd IEEE Industrial Electronics and Applications Conference, IEACon 2021 - Virtual, Online, Malaysia
Duration: 22 Nov 202123 Nov 2021

Publication series

NameIEACon 2021 - 2021 IEEE Industrial Electronics and Applications Conference

Conference

Conference2nd IEEE Industrial Electronics and Applications Conference, IEACon 2021
Country/TerritoryMalaysia
CityVirtual, Online
Period22/11/2123/11/21

Keywords

  • burst-mode
  • intermittent switching
  • light-load efficiency improvement
  • phase-shift modulation
  • three-phase bidirectional isolated dc-dc converter
  • three-phase dual-active bridge

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering
  • Industrial and Manufacturing Engineering
  • Mechanical Engineering
  • Media Technology
  • Instrumentation

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