Proceedings of the KIPE Conference (전력전자학회:학술대회논문집)

The Korean Institute of Power Electronics (전력전자학회)
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Design of the High Efficiency Bidirectional Converter for DC Distributed Power System

직류 배전 시스템을 위한 고효율 양방향 컨버터의 설계

  • Tran, Duc-Hung (Department of Electrical Engineering, Soongsil University) ;
  • Choi, Woojin (Department of Electrical Engineering, Soongsil University)
  • Published : 2016.11.25
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Abstract

This paper introduces a high efficiency bidirectional resonant converter using an additional LC auxiliary circuit for dcdistribution applications. The LC auxiliary circuit operates as a variable inductor and the additional LC circuit helps to increase the effective magnetizing inductance, thereby reducing the turn-off and primary circulating current. A 5 kW bidirectional converter for dc-distribution system is implemented to verify the validity of the proposed method. The experimental results show the high efficiency characteristics of the proposed converter over the wide range of load in both direction of power flow. The maximum efficiency of the proposed system was 98.1 % at 3 kW.

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