Double Side Cooled Modules Enable Future Generation of SiC-Traction-Inverters

Abstract:
In order to utilize the full capabilities of silicon carbide MOSFETs in automotive inverters, various aspects must be considered. Understanding wide bandgap (WBG) semiconductor materials, efficiency, smaller packages and high-power density, EMC challenges, lowest unit price and integrability are some of these aspects. All these points are highly in competition with each other. This paper shows a SiC-Traction-Inverter with double side cooled (DSC) modules, that optimizes this seemingly incompatible points in a structured manner. An innovative solution uses double side cooled modules as an enabler to raise the compatibility of the above factors to a balanced optimum, resulting in a future-proof and market-driven DC/AC converter for the automotive market.