POWER CONVERTER FOR DRIVING MOTOR

A second control unit 100 includes a current-command generating unit 10 that generates, based on a torque command T*, a current command of the motor 6, a voltage-amplitude-index calculating unit 150 that calculates, based on the current command, a voltage amplitude index (a modulation ratio PMF) that should be applied to the motor 6, a current-command adjusting unit 80 that generates, based on the modulation ratio PMF and a frequency FINV of the motor 6, a current command adjustment amount dV for adjusting the current command, and a voltage command/PWM signal generating unit 50 including a pulsation-suppression-signal generating unit that generates, based on a DC voltage EFC, a pulsation suppression signal for suppressing a pulsation component of a power supply 2f component, the voltage command/PWM signal generating unit 50 generating a gate signal (a PWM signal) to an inverter, wherein it generates a PWM signal according to a control signal including the current command adjusted by the current command adjustment value dV and the pulsation suppression signal.