Download PDFOpen PDF in browserDigital Control Strategy for ZVS Bidirectional DC-DC ConverterEasyChair Preprint 17392 pages•Date: October 21, 2019AbstractThe Bidirectional DC-DC converter is the most popular topology for hybrid electrical vehicle (HEV) or fuel cell vehicle (FCV) applications. This kind of converter has the advantages of simple circuit topology, soft-switching implementation without additional devices, high efficiency. In this paper, the turn on zero-voltage switching (ZVS) of all MOSFETs is achieved by a negative offset inductor current at the start and the end of each pulse period. Moreover, the optimization of inductor current is proposed to minimize the conduction losses. A 2.5kW prototype is successfully built and tested to demonstrate the feasibility of the controller. Keyphrases: Bidirectional converter, digital control, phase-shift control
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