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A 3kW Bidirectional DC-DC Converter for Electric Vehicles
Puyang Cheng(청푸양),Gyung-Seok Han(한경석),Hee-Jun Kim(김희준) 대한전기학회 2015 대한전기학회 학술대회 논문집 Vol.2015 No.4
A 3kW bidirectional DC-DC converter (BDC) for electric vehicles is presented in this paper. The proposed converter consists of a half-bridge structure on the primary side, an isolation transformer and a synchronous rectifier on the secondary side. With this topology, bidirectional energy can transfer between the two DC buses. For the primary side DC power supply, the converter operates as a step-down mode in which the power flows into the secondary side battery, while the converter operates as a step-up mode when the power is transferred inversely from the secondary battery. The operational principle and theoretical analysis are discussed. Finally, a 3kW prototype is implemented to verify the performance of the proposed converter.