Motor Control Device and Electric Drive Vehicle

Abstract

Provided is a motor control device that outputs voltage to be applied to an AC motor based on an output voltage command value, the motor control device including: a control period determination unit that determines a control period in accordance with a fundamental wave frequency of the AC motor and a cutoff frequency of current control; a control interrupt unit that determines a control interrupt based on the control period determined by the control period determination unit; a current controller that controls the output voltage command value based on the control interrupt determined by the control interrupt unit; and a PWM controller that controls output of voltage by PWM in accordance with the output voltage command value controlled by the current controller. This configuration enables vibration of a current due to a 6n-th-order harmonic current component to be more easily suppressed when control is performed in which a control period is not synchronized with an inverter frequency.

Dependencies are inferred from the claim text.