The Transactions of the Korean Institute of Power Electronics (전력전자학회논문지)

The Korean Institute of Power Electronics (전력전자학회)
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Development of Planar Transformer and SiC Based 3 kW High Power Density DC-DC Converter for Electric Vehicles

플라나변압기와 SiC 기반의 전기자동차용 3kW 고전력밀도 DC-DC 컨버터 개발

  • Kim, Sangjin (Dept. of Electrical & Information Eng., Seoul National University of Science and Technology) ;
  • Suk, Chaeyoung (Dept. of Electrical & Information Eng., Seoul National University of Science and Technology) ;
  • Hakim, Ramadhan Muhammad (Dept. of Electrical & Information Eng., Seoul National University of Science and Technology) ;
  • Choi, Sewan (Dept. of Electrical & Information Eng., Seoul National University of Science and Technology) ;
  • Ryu, Byoungwoo (VS PE Development Division, LG Electronics Co., Ltd.) ;
  • Park, Sanghun (VS PE Development Division, LG Electronics Co., Ltd.)
  • Received : 2020.11.24
  • Accepted : 2021.01.07
  • Published : 2021.04.20
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Abstract

This study proposes a design method of high-power-density and high-efficiency low-voltage DC-DC converters using SiC MOSFET and the optimized planar transformer design procedure based on the figure-of-merit. The secondary rectifying circuit of the phase-shifted full-bridge converter is compared to achieve high power density and high efficiency, and the phase-shifted full bridge converter with a current-doubler rectifier is selected. The planar transformer is designed by the proposed optimized design procedure and verified by FEA simulation. To validate the proposed design method, experimental results from a 3 kW prototype are provided. The prototype achieved 95.28% maximum efficiency and a power density of 2.98 kW/L.

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References

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