Monitoring method of solder layer void damage of IGBT module based on transfer function
Xiyuan Huang,
Xiepeng Sun,
Gengji Wang
et al.
Abstract:This paper proposes a method based on transfer function to monitor the solder layer void damage in IGBT modules. Firstly, the thermal resistance of each layer structure of IGBT module and the Cauer model is analyzed. Secondly, the process of obtaining the parameters of Cauer model by transfer function is analyzed. Finally, the thermal resistance of the IGBT module under different void fractions of the solder layer is measured by experiments, which obtains the relationship between the thermal resistance differe… Show more
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