Switching control strategy to extend the ZVS operating range of a dual active bridge AC/DC converter

J. Everts, J. Van den Keybus, Johan Driesen

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

25 Citations (Scopus)
4 Downloads (Pure)

Abstract

A switching control strategy to extend the zero-voltage-switching (ZVS) operating range of a Dual Active Bridge (DAB) AC/DC converter to the entire input-voltage interval and the full power range is proposed. The converter topology consists of a DAB DC/DC converter, receiving a rectified AC line voltage via a synchronous rectifier. The DAB comprises a primary side half bridge and secondary side full bridge, linked by a high-frequency isolation transformer and inductor. Using conventional control strategies, the soft-switching boundary conditions are exceeded at the higher voltage conversion ratios of the AC input interval. A novel pulse-width-modulation strategy to fully eliminate these boundaries and its analysis are presented in this paper, allowing increased performance (in terms of efficiency and stresses). Additionally, by using a half bridge / full bridge configuration, the number of active components is reduced. A prototype converter was constructed and experimental results are given to validate the theoretical analyses and practical feasibility of the proposed strategy.
Original languageEnglish
Title of host publicationProceedings of the 3rd IEEE Energy Conversion Congress and Exposition (ECCE 2011), 17-22 September 2011, Phoenix, Arizona, USA
PublisherInstitute of Electrical and Electronics Engineers
Pages4107-4114
ISBN (Print)978-1-4577-0542-7
DOIs
Publication statusPublished - 2011
Event3rd Annual IEEE Energy Conversion Congress and Exposition (ECCE 2011) - "Hyatt Regency Phoenix", Phoenix, United States
Duration: 17 Sep 201122 Sep 2011
Conference number: 3

Conference

Conference3rd Annual IEEE Energy Conversion Congress and Exposition (ECCE 2011)
Abbreviated titleECCE 2011
Country/TerritoryUnited States
CityPhoenix
Period17/09/1122/09/11
Other

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