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A zero voltage switching full-bridge DC-DC converter with capacitive output filter for a plug-in-hybrid electric vehicle battery charger

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5 Author(s)
Gautam, D. ; Dept. of Res., Delta-Q Technol. Corp., Burnaby, BC, Canada ; Musavi, F. ; Edington, M. ; Eberle, W.
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In this paper, a novel zero voltage switching full-bridge converter with trailing edge pulse width modulation and capacitive output filter is presented. The target application for this work is the second stage dc-dc converter in a two stage 1.65 kW on-board charger for a plug-in hybrid electric vehicle (PHEV). For this application the design objective is to achieve high efficiency and lower cost in order to minimize the charger size, charging time and the amount and cost of electricity drawn from the utility. A detailed converter operation analysis is presented along with simulation and experimental results. In comparison to a benchmark full-bridge with LC output filter, the proposed converter reduces the reverse recovery losses in the secondary rectifier diodes, therefore enabling a converter switching frequency of 100 kHz. Experimental results are presented for a prototype unit converting 400 V from the input dc link to an output voltage range of 200 V to 450 V dc at 1650 W. The prototype achieves a peak efficiency of 95.7%.

Published in:

Applied Power Electronics Conference and Exposition (APEC), 2012 Twenty-Seventh Annual IEEE

Date of Conference:

5-9 Feb. 2012