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Unified PWM control to minimize conduction losses under ZVS in the whole operating range of dual active bridge converters

  • Xi'an Jiaotong University

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

13 Scopus citations

Abstract

The dual active bridge (DAB) topology has great advantages for high power dc-dc conversion, especially in applications that bidirectional power transfer is required. Characteristics of dual active bridge are studied while approximating the power transfer by considering the fundamental components. Switching modes for each working mode of DAB are confirmed base on the criteria that extending the soft switching range and minimizing the conduction losses. Unified pulse-width-modulation (PWM) control that minimizes the conduction losses and allows all switches to be operated under zero-voltage-switching (ZVS) in the whole load range is proposed. The optimal relative values of duty cycles used for the two full bridges and the phase-shift are derived with respect to minimize the conduction losses under ZVS range in the chosen switching mode by applying the method of Lagrange Multiplier Rule. A DAB converter is modeled in Saber and the efficiency improving is verified by the simulation results.

Original languageEnglish
Title of host publication2013 28th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2013
Pages2016-2022
Number of pages7
DOIs
StatePublished - 2013
Event28th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2013 - Long Beach, CA, United States
Duration: 17 Mar 201321 Mar 2013

Publication series

NameConference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC

Conference

Conference28th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2013
Country/TerritoryUnited States
CityLong Beach, CA
Period17/03/1321/03/13

Keywords

  • Conduction loss
  • DAB converter
  • PWM control
  • ZVS

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