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SU Min,ZOU Xudong.Phase-shift Full-bridge ZVS Converter Based on SiC MOSFET[J].JOURNAL OF POWER SUPPLY,2018,16(3):36-43
Phase-shift Full-bridge ZVS Converter Based on SiC MOSFET
Received:November 29, 2016  Revised:August 03, 2017
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DOI:10.13234/j.issn.2095-2805.2018.3.36
Keywords:phase-shift full-bridge  synchronous rectifier  clamp diode  SiC MOSFET
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SU Min 1. China-EU Institute for Clean and Renewable Energy, Huazhong University of Science and Technology, Wuhan , China;
2. State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan , China
ZOU Xudong 1. China-EU Institute for Clean and Renewable Energy, Huazhong University of Science and Technology, Wuhan , China;
2. State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan , China
dzou@mail.hust.edu.cn
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Abstract:
      With the soft-switching technology, phase-shift full-bridge ZVS converter significantly reduces the switching loss, and further improves the efficiency of the device. Therefore, it has been widely applied. However, the rectifier diode conduction loss is relatively larger when a traditional phase-shift full-bridge ZVS converter is operating under the condition of low voltage and large current. In this paper, synchronous rectifier technology was adopted to reduce the secondary rectifier conduction loss at first. Then, clamp diode was added in the primary side to suppress the rectifier voltage spike in the secondary side, and the DC component was suppressed by connecting a blocking capacitor in series to the primary side. At last, a simulation model of SiC MOSFET half-bridge module was established using Saber. The high-frequency operation characteristics of SiC MOSFET were verified through the collaborative simulation of MATLAB and Saber.
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