| 摘要 |
To provide a motor control apparatus capable of preventing large accidental switching surges and suppressing switching surges that hamper efforts to improve the efficiency of PWM control inverters. The motor control apparatus has a PWM control inverter and axial position detector 3 which detects the position of the rotary axis of motor 14. Gate drive circuit 1 of the PWM control inverter comprises decoder circuit 4, correction gate circuit 5, and logical AND circuit 6. Said correction gate circuit 5 sets a time difference at the change point for PWM signals and at the change point for commutation signals. This time difference enables switching surges to be controlled and therefore improve the efficiency of the PWM control inverter. <IMAGE> |
