Electric Motor Drive Device and Control Method Therefor

摘要

The present invention relates to an electric motor drive device where a first inverter and a second inverter both supply power to one electric motor and to a control method for the electric motor drive device. A control unit for controlling an output of each inverter increases an output of the inverter of which a drive control system has first completed an initial diagnosis, ahead of the other inverter. If either inverter is about to overheat, the control unit decreases an output of the inverter that is about to overheat while keeping or increasing an output of the other inverter having the normal temperature.

主权项

1. An electric motor drive device provided with a first inverter and a second inverter, both of which supply power to one electric motor, the device comprising a control unit configured to change an output ratio between the first inverter and the second inverter under a predetermined condition.