A Reconfigurable Dual-Active-Bridge Resonant Converter Designed for Wide-Load-Range High-Efficiency Operation

Y. P. Chan, K. H. Loo

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review


Switching loss and conduction loss are two main loss mechanisms in DAB converter and the degree to which they affect the efficiency of DAB converter depends on the chosen power modulation method. In general, no single modulation method will perform well in all operating conditions. In this paper, a hybrid modulation scheme and a new DAB converter topology designed for its realization are presented. The DAB converter is designed to switch between two operation modes: dynamic frequency matching (DFM) and enhanced dual-phase-shift (EDPS) modulation. Under DFM modulation, zero backflow power, zero circulating current, full ZVS are achieved, whereas under EDPS modulation, zero backflow power and full ZVS are achieved. These advantageous features are critical to ensuring high-efficiency operation of DAB converter. The proposed solution is experimentally verified using a 1.5-kW hardware prototype with efficiency exceeding 96% for all output power levels.

Original languageEnglish
Title of host publicationProceedings, IECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society
PublisherIEEE Computer Society
Number of pages6
ISBN (Electronic)9781728148786
Publication statusPublished - 14 Oct 2019
Event45th Annual Conference of the IEEE Industrial Electronics Society, IECON 2019 - Lisbon, Portugal
Duration: 14 Oct 201917 Oct 2019

Publication series

NameIECON Proceedings (Industrial Electronics Conference)


Conference45th Annual Conference of the IEEE Industrial Electronics Society, IECON 2019


  • bidirectional converter
  • DAB converter
  • immittance network
  • resonant converter
  • soft-switching

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering

Cite this