| 摘要 |
　A control device for an electric motor, which controls the operation of an electric motor by outputting a PWM signal to a switching element forming an inverter, the control device being provided with: a voltage command generation unit (21) which generates, as voltage commands (Vu*, Vv*, Vw*), superimposed wave signals wherein the tertiary harmonic wave of a sine wave is superimposed on said sine wave, which has an inverter output frequency (FINV) as the fundamental frequency thereof; and a PWM signal generation unit (23) which generates PWM signals (U, V, W, X, Y, Z) by means of a magnitude comparison between a voltage command output by the voltage command generation unit (21) and a carrier signal (CAR) output by an asynchronous carrier signal generation unit (22). |
