An adaptive dead-time control scheme for high-switching-frequency dual-active-bridge converter

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

69 Scopus citations

Abstract

In high-switching-frequency isolated dc-dc converters, dead-time has a great influence on the switching transition behavior of switching devices. Fixed dead-time is determined by the longest required dead-time and results in missing zero-voltage-switching (ZVS) in some operation conditions, which causes undesirable switching stress and ringing, and efficiency degradation of converter. This paper proposes an adaptive dead-time control scheme for the high-switching-frequency dual-active-bridge (DAB) dc-dc converter. The proposed scheme feedbacks the V ds of primary side switch and can auto-tune the dead-time to make the primary side switching devices work under zero-voltage condition and to increase the converter efficiency. The scheme was implemented in a 5 kW 500 kHz DAB converter prototype, and the experimental results verified the effectiveness of proposed scheme.

Original languageEnglish
Title of host publicationAPEC 2012 - 27th Annual IEEE Applied Power Electronics Conference and Exposition
Pages1355-1361
Number of pages7
DOIs
StatePublished - 2012
Event27th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2012 - Orlando, FL, United States
Duration: 5 Feb 20129 Feb 2012

Publication series

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

Conference

Conference27th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2012
Country/TerritoryUnited States
CityOrlando, FL
Period5/02/129/02/12

Keywords

  • Isolated dc-dc converter
  • auto-tuning
  • dead-time
  • digital control
  • zero-voltage switching

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