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Series inductance design of dual‐active‐bridge converter: ZVS range with practical considerations

Zero‐voltage‐switching boundaries of dual‐active‐bridge (DAB) converter operating with phase‐shift modulation is largely studied in literature. However, several practical considerations are neglected to simplify the ZVS analysis. This paper proposes the full analysis of DAB converter ZVS range considering the switches capacitance, dead time, series inductance design, and input/output voltage variation. Three different designs of series inductance were developed. The prototypes were tested under different voltage conditions considering the whole power range. The experimental results show the considerable difference in ZVS region of the classical analysis and the proposed in this paper, proving the feasibility of the paper analysis.