Power converter control device

A power converter control device for performing PWM control for power converters which respectively supply power to a plurality of winding groups of a multiplex-winding electric motor including the plurality of winding groups, the power converter control device comprising:

• a PWM controller configured to perform the PWM control while switching between an asynchronous PWM control mode using a carrier for the PWM control that is not synchronized with three-phase voltage commands for driving the multiplex-winding electric motor, and a synchronous PWM control mode using a carrier for the PWM control that is synchronized with the three-phase voltage commands for driving the multiplex-winding electric motor, wherein
• the synchronous PWM control mode includes at least one of a first synchronous PWM control mode in which voltage commands for the respective winding groups of the multiplex-winding electric motor are subjected to the PWM control using a carrier synchronized with a voltage command for a specific winding group, and a second synchronous PWM control mode in which voltage commands for the respective winding groups of the multiplex-winding electric motor are subjected to the PWM control using respective carriers synchronized with the respective voltage commands, and
• the PWM controller performs control while selectively switching between the asynchronous PWM control mode, and both or one of the first synchronous PWM control mode and the second synchronous PWM control mode, on the basis of an operation state of the multiplex-winding electric motor.