Single- and Three-Phase Dual-Active-Bridge DC–DC Converter Comparison for Battery Electric Vehicle Powertrain Application

Nasr Guennouni (), Nadia Machkour and Ahmed Chebak
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Nasr Guennouni: Green Technology Institute, Mohammed VI Polytechnic University, Benguerir 43150, Morocco
Nadia Machkour: Complex Cyber, Physical System Laboratory, Ecole Nationale Supérieure des Arts et Métiers, Hassan II University Casablanca, Casablanca 20000, Morocco
Ahmed Chebak: Green Technology Institute, Mohammed VI Polytechnic University, Benguerir 43150, Morocco

Energies, 2024, vol. 17, issue 21, 1-26

Abstract: Dual-active-bridge (DAB) DC–DC converters are of great interest for DC–DC conversion in battery electric vehicle (BEV) powertrain applications. There are two versions of DAB DC–DC converters: single-phase (1p) and three-phase (3p) architectures. Many studies have compared these architectures, selecting the 3p topology as the most efficient. However, there is a gap in the literature when comparing both architectures when single-phase-shift (SPS) modulation is not used to drive the converter. The aim of this study was to compare 1p and 3p DAB DC–DC converters driven by optimal modulation techniques appropriate for BEV powertrain applications. Mathematical loss models were derived for both architectures, and their performances were compared. A case study of a 100 kW converter was considered as an example to visualize the overall efficiency of the converter for each layout. The 1p DAB DC–DC converter architecture outperformed the 3p layout in both its Y–Y and D–D transformer configurations. The higher performance efficiency, lower number of components, and reduced design complexity make the 1p DAB DC–DC converter topology a favorable choice for BEV powertrain applications.

Keywords: battery electric vehicles; dual-active-bridge DC–DC converter; electric powertrain; phase-shift modulation (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
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