Three-phase AC induction motor control device and three-phase AC induction motor control method

A three-phase AC induction motor control method for controlling a torque based on a two-axis orthogonal coordinate system in synchronization with a power supply angular frequency, the method comprising:

• computing a torque axis non-interference compensation voltage and a magnetic flux axis non-interference compensation voltage based on a torque command value, a motor rotation speed, and a power supply voltage by referencing a map stored in advance;
• and
• performing filtering for the torque axis non-interference compensation voltage depending on a rotor magnetic flux response delay.

A three-phase AC induction motor control device configured to control a torque based on a two-axis orthogonal coordinate system in synchronization with a power supply angular frequency, the control device comprising:

• a non-interference control means for receiving a motor rotation speed, a torque command value, and a power supply voltage as an input and computing a torque axis non-interference compensation voltage and a magnetic flux axis non-interference compensation voltage by referencing a map stored in advance;
• and
• a non-interference magnetic flux response filtering means for performing filtering for the torque axis non-interference compensation voltage depending on a rotor magnetic flux response delay.