Junction temperature post-fault analysis of single IGBT short-circuit for double-side cooling inverter used for electric vehicle

Compared with single-side cooling inverter, double-side cooling inverter is more advantageous for the application of electric vehicle in terms of efficient cooling performance, mechanical robustness and high power density. IGBT short-circuit fault is one of the detrimental factors to cause the whole inverter failure. From the perspective of inverter, this paper analyzed the fault condition of single IGBT short circuit and compared the post-fault protection strategies of ASC (active short circuit) and UCG (uncontrolled generation mode) considering IGBT junction temperature under load and no-load conditions.