Vehicle equipped with motor and inverter

A vehicle, comprising:

• a motor for driving wheels;
• an inverter to drive said motor;
• and
• a control device to perform pulse width modulation (PWM) control of said inverter, wherein
• said control device performs a first control and determines carrier frequency of the PWM control so that heat generation of said inverter is minimized in a case where an electric current supplied to said motor by said inverter or torque generated in said motor is larger than a threshold value;
• and performs a second control and determines the carrier frequency so that a total of a loss in said inverter and a loss in said motor is minimized in a case where said electric current or said torque is smaller than said threshold value, and
• said first control performs synchronous PWM control without permission of performing non-synchronous PWM control, and said second control selectively performs the synchronous PWM control or the non-synchronous PWM control with permission of performing said non-synchronous PWM control.

A vehicle, comprising:

• a motor for driving wheels;
• an inverter to drive said motor;
• and
• a control device to perform pulse width modulation (PWM) control of said inverter, wherein
• said control device determines carrier frequency of the PWM control so that heat generation of said inverter is minimized in a first region where a rotation speed of said motor is higher than a prescribed speed and a torque of said motor is higher than a prescribed torque;
• determines the carrier frequency of the PWM control so that noise in said vehicle is minimized in a second region where said torque is lower than said prescribed torque by at least a prescribed value;
• and determines the carrier frequency so that a total of a loss in said inverter and a loss in said motor is minimized in a third region other than the first and second regions.