Investigation of Fine Fin Structure for SiC Inverter Cooling with Subcooled Flow Boiling

Abstract

In recent years, in order to achieve carbon neutrality, automobile manufacturers have been focusing on the development of electric vehicles and pursuing higher power density of in-vehicle inverters. The use of the next generation power semiconductor is indispensable to increase the power density, which increases the heat generation density of the cooling surface. This study focuses on subcooled flow boiling with high cooling performance. In this paper, the two-phase flow behavior in a narrow channel with fine fin structure is discussed first, and then the heat transfer performance is evaluated using a SiC module.