Transient DC Bias Suppression with Rapid Power Reversing for EPS Whole Voltage Range in Dual Active Bridge DC-DC Converter

Xu Han*, Huiqing Wen

*Corresponding author for this work

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

Abstract

During typical dynamic operations of a dual-active bridge (DAB) converter, such as start-up and power changes, a transient DC bias may emerge, potentially causing harm to its components, power supply facilities, and connected electrical loads. Traditionally, transient optimizations have mainly focused on unidirectional analysis, ignoring the inherent bidirectional power transmission and zero voltage switching (ZVS) capability of the DAB converter. This work proposes a novel DC bias suppression strategy based on a straightforward phase-shift optimization method for rapid power reversal, which is valid for achieving transient ZVS with a wide load range in the DAB converter. Conventional control schemes rely on the single-phase-shift (SPS) modulation method to reduce DC variation while ignoring the limitations of SPS control strategies, such as excessive backflow and a limited zero-voltage-switch range. Comprehensive experimental results indicate that DC deviation generated during the transient power reverse stage can be well eliminated with all switches achieving ZVS in all load conditions without any added snubbers.

Original languageEnglish
Title of host publication2023 IEEE IAS Global Conference on Emerging Technologies, GlobConET 2023
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9798350331790
DOIs
Publication statusPublished - 2023
Event2023 IEEE IAS Global Conference on Emerging Technologies, GlobConET 2023 - London, United Kingdom
Duration: 19 May 202321 May 2023

Publication series

Name2023 IEEE IAS Global Conference on Emerging Technologies, GlobConET 2023

Conference

Conference2023 IEEE IAS Global Conference on Emerging Technologies, GlobConET 2023
Country/TerritoryUnited Kingdom
CityLondon
Period19/05/2321/05/23

Keywords

  • DAB converter
  • ZVS
  • power reverse
  • transient EPS modulation

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