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Performance Comparison of SiC MOSFET, Si CoolMOS and IGBT for DAB Converter |
Liang Mei1,Trillion Q Zheng1,Ke Chong2,Li Yan1,You Xiaojie1 |
1. Beijing Jiaotong University Beijing 100044 China; 2. North China University of Water Resources and Electric Power Zhengzhou 450046 China |
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Abstract Silicon carbide(SiC) semiconductor devices have received extensive attention with the better performance of the wide band gap material. It is necessary to compare with their silicon(Si) counterparts due to SiC semiconductor devices are new. In this paper, the static characteristics of SiC MOSFET, Si CoolMOS and IGBT are compared. Then, the test platform based on buck converter is constructed, the input voltage of which is 400V, the output current of which is 4~10A. Switching waveforms, switching times, dv/dt, di/dt and reverse recovery characteristic of internal diodes of three devices are tested. Finally, theoretical efficiencies and practical efficiencies of a 2kW dual active bridge (DAB) converter are compared.
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Received: 09 August 2014
Published: 14 September 2015
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