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http://dx.doi.org/10.6113/TKPE.2021.26.2.112

Development of Planar Transformer and SiC Based 3 kW High Power Density DC-DC Converter for Electric Vehicles  

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.)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.26, no.2, 2021 , pp. 112-119 More about this Journal
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.
Keywords
LDC (Low Voltage DC-DC Converter); APM (Auxiliary Power Module); High power density; High switching frequency; Planar transformer;
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