Patent ID: 7034493

Claim:
A motor control apparatus comprising: a fundamental wave current control device that implements feedback control on a fundamental wave component of a motor current flowing to a 3-phase AC motor in a dq coordinate system rotating in synchronization with the rotation of the motor; a higher harmonic current control device that implements feedback control on a higher harmonic component of the motor current in a dhqh coordinate system rotating with a frequency which is an integral multiple of a frequency of the fundamental wave component of the motor current; a command value calculating device that calculates an AC voltage command value by adding an output from the fundamental wave current control device to an output from the higher harmonic current control device and outputs the AC voltage command value to a power conversion device that generates a 3-phase AC voltage corresponding to the AC voltage command value; and a higher harmonic component eliminating device that eliminates the higher harmonic component of the motor current from a control deviation between a motor current feedback value and a fundamental wave current command value in the fundamental wave current control device.