Abstract: A control system for a rotary electric machine includes an inverter including a plurality of power switches, a heat exchanger, first temperature sensors arranged to monitor the power switches, a second temperature sensor arranged to monitor the heat exchanger, and a controller. An expected power loss is determined based upon electric current, switching functions, and electrical characteristics of the power switches. A plurality of power capacity terms are determined based upon the expected power loss in the inverter, the temperatures of the power switches, and the temperature of the heat exchanger. The inverter is controlled based upon the aforementioned power capacities.

Abstract: Examples described herein provide a method that includes performing an electrical degradation analysis for a power inverter. The method further includes performing a thermal degradation analysis on the power inverter. The method further includes, responsive to at least one of a result of the electrical degradation analysis being indicative of an electrical issue of the power inverter or a result of the thermal degradation analysis being indicative of a thermal issue of the power inverter, implementing a corrective action for the power inverter.