Air-Cooled Heat Exchanger for High-Temperature Power Electronics

摘要

This work demonstrates a direct air-cooled heat exchanger strategy for high-temperature power electronic devices with an application specific to automotive traction drive inverters. We present experimental heat dissipation and system pressure curves versus flow rate for baseline and optimized sub-module assemblies containing two ceramic resistance heaters that provide device heat fluxes. The maximum allowable junction temperature was set to 150°C, 175°C, and 200°C. Results were extrapolated to the inverter scale and combined with balance-of-inverter components to estimate inverter power density and specific power.