A reconfigurable three-phase dual-active-bridge DC-DC converter designed for wide-range high-efficiency operation

Akif Zia Khan, Ka Hong Loo

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

1 Citation (Scopus)

Abstract

All power converters, including dual-active-bridge (DAB) DC-DC converter, cannot sustain a consistently high-efficiency performance over a wide range of operating conditions, and reconfiguration of operation mode represents a viable solution to this fundamental problem. To meet this challenge, a resonant-type three-phase DAB (3p-DAB) converter incorporating a three-phase reconfigurable resonant network (3p-RRN) has been proposed in this paper. The proposed converter can operate either as a 3p-DAB resonant immittance converter (3p-DABRIC) or a 3p-DAB series resonant converter (3p-DABSRC) to enhance its efficiency performance over a wide range of voltage conversion ratio and output power levels. In addition, the proposed converter offers the flexibility to operate with unity power factor, full-range zero-voltage switching (ZVS) and enhanced light-load efficiency under varying operating conditions by appropriate selection of the converter's operation mode. Based on a careful loss analysis and verification of the loss model by experimental measurements, it has been found that under wide range variations in voltage conversion ratio and output power levels, 3p-DABSRC delivers a more superior efficiency performance at low to medium power levels, whereas 3p-DABRIC generally achieves a higher efficiency at high power levels, and thus combination of both operation modes leads to an overall wide range high-efficiency performance.

Original languageEnglish
Title of host publicationPEDG 2019 - 2019 IEEE 10th International Symposium on Power Electronics for Distributed Generation Systems
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages147-154
Number of pages8
ISBN (Electronic)9781728124551
DOIs
Publication statusPublished - 3 Jun 2019
Event10th IEEE International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2019 - Xi'an, China
Duration: 3 Jun 20196 Jun 2019

Publication series

NamePEDG 2019 - 2019 IEEE 10th International Symposium on Power Electronics for Distributed Generation Systems

Conference

Conference10th IEEE International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2019
CountryChina
CityXi'an
Period3/06/196/06/19

Keywords

  • DC-DC power conversion
  • Immittance converters (ICs)
  • Resonant power conversion

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering
  • Control and Optimization

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