Design Study and Prototype of 150 kW Inverter with Discrete SiC MOSFETs

摘要

This paper presents a prototype of a 150 kW inverter for a DC-link voltage UDC = 400 V built with discrete 650 V SiC MOSFETs in TO-247 package. The aim of this investigation is to provide the necessary input for an analysis of the system cost benefit, which is achievable when using SiC especially in combination with a discrete setup. In particular, this setup should provide insight into the behaviour of SiC MOSFETs in parallel connection. To improve static and dynamic current sharing and therefore the total accessible inverter ouput power, a newly developed grouping criterion is applied.