大功率逆变器散热设计

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Abstract This paper focuses on the thermal design of High-power inverter. IGBT modules have been widely used in power systems, as well as in reactive power compensation systems. With the trend of smaller size and lighter weight of the system, the heat dissipation within unit volume is consequently becoming higher, endangering the operation of the system. This paper provides a full set of thermal design: first, the loss of IGBT module in real working condition is analyzed; Then, a new type of thermal impedance network of NTC thermistor is put forward, with the help of the circuit, the junction temperature and thermal resistance could be calculated more quickly and accurately; finally, we use the DesignXplorer module of ANSYS to analyze the key parameters that influence the thermal resistance quantitatively. The cooling effect of the cooling system has been simulated and experimented to prove the accuracy of the thermal design.

Key words： inverter IGBT module thermal design thermal impedance network

Received: 25 January 2018 Published: 31 August 2018

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	Articles by authors
	Zhao Honglu
	Zhu Yongyuan
	Zhang Yin

Cite this article:

Zhao Honglu,Zhu Yongyuan,Zhang Yin. Thermal design of high-power inverter[J]. Electrical Engineering, 2018, 19(8): 149-156.

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http://dqjs.cesmedia.cn/EN/Y2018/V19/I8/149

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