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A Resonant Full Bridge DC-DC Converter used for Plug-in Hybrid Electric Vehicle Battery Charging

Subitha. S, Mrs. Jayarama Pradeep M.E.,(Ph.D)

Abstract- In this paper, a zero voltage full bridge dc-dc converter pulse width modulation and capacitive output filter is presented. The application for this second stage dc-dc converter is a two stage on-board charger for a plug in hybrid electric battery charging. For this application the design objective is to reduce the cost in order to minimize the charger size, charging time and the amount and cost of electricity drawn from the utility and to achieve high efficiency. A converter operation is presented with results. In comparison to full bridge with an LC output filter, the proposed converter reduces the reverse recovery loses in the secondary rectifier diodes, enabling the high switching frequency. Experimental results are presented in this paper. The peak efficiency 92% is achieved by using the proposed converter. Index Terms- DC-DC converter, plug-in hybrid electrical vehicle (PHEV), capacitive output filter, resonant converters, zero voltage switching (ZVS).