Proceedings of the KIPE Conference (전력전자학회:학술대회논문집)

The Korean Institute of Power Electronics (전력전자학회)
권호 표지

Novel Hybrid Converter for the On-Board Charger of Electric Vehicle

전기자동차용 온보드 충전기를 위한 새로운 하이브리드 컨버터

  • Vu, Hai-Nam (Department of Electrical Engineering, Soongsil University) ;
  • Tran, Dai-Duong (Department of Electrical Engineering, Soongsil University) ;
  • Choi, Woojin (Department of Electrical Engineering, Soongsil University)
  • Published : 2015.11.27
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Abstract

This paper introduces a novel hybrid converter combining a full-bridge soft switching converter and a full-bridge LLC converter. In this topology all the primary switches can achieve ZVS and ZCS all over the operation range. An additional switch and a diode are added in the secondary side of full-bridge converter to eliminate the circulating current and to provide a separate freewheeling path. The hybrid structure makes it possible to deliver the power to the secondary all the time of operation, thereby improving the efficiency. The proposed topology is suitable for the applications such as on-board chargers for electric vehicles and high power dc-dc converters. A 6.6-kW prototype converter was implemented and 97.5% efficiency was obtained through the experiments.

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