[Claim 1]
a voltage command value generator that generates a voltage command value for the motor from a torque command value based on the speed command value and the speed of the motor;
a control switching determination unit that determines whether the control region of the motor is in the voltage saturation region,
When the control switching determination unit determines that the control region is in the voltage saturation region, the voltage command value generator
generating the voltage command value based on the torque command value, the limit value of the maximum voltage that can be output to the motor, and the voltage vector angle of the output voltage applied to the motor;
　Motor controller.
[Claim 2]
The voltage command value generator calculates a current command value of the motor based on an intersection of a constant torque curve of the motor of the torque command value and a constant induced voltage ellipse of the motor, and calculates a voltage vector from the current command value. find the angle to generate the voltage command value,
The motor control device according to claim 1.
[Claim 3]
The voltage command value generator calculates a provisional voltage command value according to a motor model formula based on the current command value, and calculates the voltage vector angle based on the provisional voltage command value,
The motor control device according to claim 2.
[Claim 4]
The voltage command value generator calculates a compensation voltage by multiplying an error between the motor current command value and the motor current by a proportional constant, and generates the voltage command value to which the compensation voltage is added. ,
The motor control device according to claim 1.[Claim 1]
a voltage command value generator that generates a voltage command value for the motor from a torque command value based on the speed command value and the speed of the motor;
a control switching determination unit that determines whether the control region of the motor is in the voltage saturation region,
When the control switching determination unit determines that the control region is in the voltage saturation region, the voltage command value generator
generating the voltage command value based on the torque command value, the limit value of the maximum voltage that can be output to the motor, and the voltage vector angle of the output voltage applied to the motor;
　Motor controller.
[Claim 2]
The voltage command value generator calculates a current command value of the motor based on an intersection of a constant torque curve of the motor of the torque command value and a constant induced voltage ellipse of the motor, and calculates a voltage vector from the current command value. find the angle to generate the voltage command value,
The motor control device according to claim 1.
[Claim 3]
The voltage command value generator calculates a provisional voltage command value according to a motor model formula based on the current command value, and calculates the voltage vector angle based on the provisional voltage command value,
The motor control device according to claim 2.
[Claim 4]
The voltage command value generator calculates a compensation voltage by multiplying an error between the motor current command value and the motor current by a proportional constant, and generates the voltage command value to which the compensation voltage is added. ,
The motor control device according to claim 1.