Double step-down dual active bridge DC-DC converter

Su Han Kim, Hyemin Kang, Honnyong Cha, Seongyong Jeong, Heung Geun Kim

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

3 Scopus citations

Abstract

A double step-down dual active bridge converter with high voltage gain and high efficiency is proposed in this paper. The proposed converter achieves double step down function by adding only one capacitor at the primary side of transformer. Moreover, the three switches at the primary side has reduced voltage stress and the proposed converter operates in a wide ZVS range under light load. Additionally there is no transformer saturation problem by the addition of this capacitor. Hence, it removes the need of additional control scheme and circuit which improves the efficiency of the system in terms of cost and complexity. Moreover, by applying trapezoidal scheme at transformer primary side, two low side switches of proposed converter has improved turn-off loss. A 4 kW prototype converter is constructed to verify the performance of the proposed converter.

Original languageEnglish
Title of host publication9th International Conference on Power Electronics - ECCE Asia
Subtitle of host publication"Green World with Power Electronics", ICPE 2015-ECCE Asia
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages777-784
Number of pages8
ISBN (Electronic)9788957082546
DOIs
StatePublished - 27 Jul 2015
Event9th International Conference on Power Electronics - ECCE Asia, ICPE 2015-ECCE Asia - Seoul, Korea, Republic of
Duration: 1 Jun 20155 Jun 2015

Publication series

Name9th International Conference on Power Electronics - ECCE Asia: "Green World with Power Electronics", ICPE 2015-ECCE Asia

Conference

Conference9th International Conference on Power Electronics - ECCE Asia, ICPE 2015-ECCE Asia
Country/TerritoryKorea, Republic of
CitySeoul
Period1/06/155/06/15

Keywords

  • Double step-down
  • dual active bridge
  • soft switching
  • transformer saturation

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