| abstract |
Appropriate control is performed even when PWM control is saturated. An inverter converts DC power from a high-voltage DC power source into AC current according to a PWM signal generated based on an AC voltage command, and drives a motor. A low voltage DC power supply 32 is arranged between the neutral point of the motor 22 and the input side of the inverter, and power is exchanged between the high voltage DC power supply 30 and the low voltage DC power supply 32 arranged on the input side of the inverter 24. . When the AC voltage command supplied to the electronic control unit 40 and the inverter 22 exceeds the PWM operating range and the PWM signal is saturated, the original motor based on the motor response and the AC voltage command generated according to the saturation. The difference from the response is regarded as a disturbance, and the disturbance is added to the voltage command for correction. [Selection] Figure 3 |