A Voltage Doubler Circuit to Extend the Soft-switching Range of Dual Active Bridge Converters

Zian Qin, Yanfeng Shen, Huai Wang, Frede Blaabjerg

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

2 Citations (Scopus)
476 Downloads (Pure)

Abstract

A voltage doubler circuit is realized to extend the soft-switching range of Dual Active Bridge (DAB) converters. No extra hardware is added to the DAB to form this circuit, since it is composed of the dc blocking capacitor and the low side full bridge converter, which already exist in DAB. With the voltage doubler, the DAB converter can achieve soft switching and high efficiency when the low side dc voltage is close to 2 pu (1 pu is the high side dc voltage divided by the transformer turn ratio), which can be realized only when the low side dc voltage is close to 1 pu by using the conventional phase shift modulation in DAB. Thus the soft switching range is extended. The soft switching boundary conditions are derived. A map to show the soft switching or hard switching in the full load and voltage range is obtained. The feasibility and effectiveness of the proposed method is finally verified by experiments.
Original languageEnglish
Title of host publicationProceedings of the 2017 IEEE Applied Power Electronics Conference and Exposition (APEC)
PublisherIEEE Press
Publication dateMar 2017
Pages300-306
ISBN (Print)978-1-5090-5366-7
DOIs
Publication statusPublished - Mar 2017
Event2017 IEEE Applied Power Electronics Conference and Exposition (APEC) - Tampa Convention Center, Tampa, FL, United States
Duration: 26 Mar 201730 Mar 2017

Conference

Conference2017 IEEE Applied Power Electronics Conference and Exposition (APEC)
LocationTampa Convention Center
CountryUnited States
CityTampa, FL
Period26/03/201730/03/2017
SeriesIEEE Applied Power Electronics Conference and Exposition (APEC)
ISSN2470-6647

Fingerprint Dive into the research topics of 'A Voltage Doubler Circuit to Extend the Soft-switching Range of Dual Active Bridge Converters'. Together they form a unique fingerprint.

Cite this