Comparative evaluation of bidirectional dual active bridge DC-DC converter variants

G. Sfakianakis, J. Everts, H. Huisman, E.A. Lomonova

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

11 Citations (Scopus)
3 Downloads (Pure)


For the realization of DC-DC converters in automotive industry, the Dual Active Bridge (DAB) converter seems to be a promising choice because of its soft-switching and high-power-density capability. Contrary to the traditional 3 level - 3 level (3-3L) DAB, a 3 level - 5 level (3-5L) DAB can operate under soft-switching and lower RMS inductor current. For this reason, a fair comparison is needed among the 3-3L DAB and two possible implementations of the 3-5L DAB, which utilize a T-Type bridge leg (3-5L-T DAB) or an NPC bridge leg (3-5L-NPC DAB) in the secondary bridge. In this paper, a comparative evaluation of the aforementioned Dual Active Bridge DC-DC converter variants is presented. The advantages and drawbacks of each concept are discussed in detail, focusing on the semiconductor chip area utilization and the impact on the converter efficiency. Furthermore, the analytical models allow a power density comparison, by correlating the component losses with their volume.
Original languageEnglish
Title of host publicationThirteenth IEEE Vehicle Power and Propulsion Conference (VPPC 2016), 17-20 October 2016, Hangzou, China
Place of PublicationPiscataway
PublisherInstitute of Electrical and Electronics Engineers
Number of pages6
ISBN (Electronic)978-1-5090-3528-1
Publication statusPublished - 2016
Event13th IEEE Vehicle Power and Propulsion Conference (VPPC 2016) - Hangzhou, Hangzhou, China
Duration: 17 Oct 201620 Oct 2016
Conference number: 13


Conference13th IEEE Vehicle Power and Propulsion Conference (VPPC 2016)
Abbreviated titleVPPC 2016
Internet address


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