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LIU Chao,JIA Xiaoyu,HU Changsheng,CHEN Min,XU Dehong.Design of Heat Sink for Electric Vehicle SiC MOSFET Air-cooled Inverter[J].JOURNAL OF POWER SUPPLY,2018,16(3):151-157
Design of Heat Sink for Electric Vehicle SiC MOSFET Air-cooled Inverter
Received:February 11, 2017  Revised:March 27, 2018
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DOI:10.13234/j.issn.2095-2805.2018.3.151
Keywords:inverter  heat sink  electric vehicle
Fund Project:The National Natural Science Foundation of China (General Program, Key Program, Major Research Plan)
              
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LIU Chao College of Electrical Engineering, Zhejiang University, Hangzhou , China
JIA Xiaoyu College of Electrical Engineering, Zhejiang University, Hangzhou , China
HU Changsheng College of Electrical Engineering, Zhejiang University, Hangzhou , China
CHEN Min College of Electrical Engineering, Zhejiang University, Hangzhou , China
XU Dehong College of Electrical Engineering, Zhejiang University, Hangzhou , China xdh@zju.edu.cn
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Abstract:
      An electric vehicle driver inverter has a special request for high power density, and its thermal design directly affects the reliability of the electric driver system; meanwhile, the volume of cooling system also restricts the power density of the inverter. In this paper, based on a 20 kW electric vehicle SiC MOSFET air-cooled inverter, the relationship between the heat sink's thermal resistance and its geometric parameters is analyzed. On the premise of satisfying the cooling requirement of the inverter, the heat sink design, which includes the numbers of fans and heat sink channels, fin thickness and channel length, is performed. Moreover, the theoretical design was compared with thermal simulation and experiments, respectively.
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