WARM-UP CONTROL DEVICE FOR INVERTER

摘要

PROBLEM TO BE SOLVED: To provide a warm-up control device for an inverter that allows quickly ending warm-up of a capacitor at low temperature.SOLUTION: A warm-up control device for an inverter includes a battery 50 and an electrolytic capacitor 80 connected in parallel to an input side of an inverter circuit 20 having a plurality of bridge-connected switching elements S1 to S6. On an output side of the inverter circuit 20, coils of an electric motor 60 is connected. When the temperature of the electrolytic capacitor 80 detected by a capacitor temperature sensor 90 is lower than a specified temperature, a microcomputer 41 controls the switching elements S1 to S6 of the inverter circuit 20 so that a DC current that is set based on the degree of deterioration and the temperature of the electrolytic capacitor 80 is supplied to the coils of the electric motor 60.