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A Variable Frequency Modulation Strategy for Current-Fed Dual-Active-Bridge Converter to Expand ZVS Range

  • Xi'an Jiaotong University
  • Virginia Polytechnic Institute and State University

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

7 Scopus citations

Abstract

This article proposes a variable frequency modulation strategy for current-fed dual-active-bridge converter (CFDAB). The proposed strategy aims to render the ZVS of the CFDAB unconstrained by its low-voltage-side (LVS) duty cycle. By varying the switching frequency of the CFDAB, the current ripples on the LVS inductors can be adjusted flexibly. This allows the CFDAB to operate at critical-conduction-mode (CRM) in the conventional ZVS-loss region. The CRM facilitates the ZVS of CFDAB while ensuring low circulating currents on the LVS inductors. Hence, the proposed strategy is able to expand the ZVS range and voltage regulation range of the CFDAB without increasing conduction losses. The effectiveness of the proposed strategy is validated by a 500 W experimental set-up.

Original languageEnglish
Title of host publication2024 IEEE Applied Power Electronics Conference and Exposition, APEC 2024
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages468-473
Number of pages6
ISBN (Electronic)9798350316643
DOIs
StatePublished - 2024
Event39th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2024 - Long Beach, United States
Duration: 25 Feb 202429 Feb 2024

Publication series

NameConference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC
ISSN (Print)1048-2334

Conference

Conference39th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2024
Country/TerritoryUnited States
CityLong Beach
Period25/02/2429/02/24

Keywords

  • Current-Fed converter
  • dual-active-bridge
  • modulation strategy

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