Patent ID: 6674262
Filing Date: 2004-01-06
Classification: H02P

Abstract:
A motor control apparatus comprising:a fundamental current command value determining device that determines a fundamental current command value for a motor current; a higher harmonics current command value determining device that determines a higher harmonics current command value for the motor current; and a current control device that controls a current flowing to the AC motor based upon the fundamental current command value and the higher harmonics current command value, wherein said fundamental current command value determining device sets the fundamental current command value based upon at least a torque command value for an AC motor, said higher harmonics current command value determining device sets the higher harmonics current command value based upon at least a torque command value of the AC motor, and said current control device includes a fundamental wave current control device that implements control so as to match a fundamental wave component of the motor current with the fundamental current command value in a dq coordinate system that rotates in synchronization with a fundamental wave component of an armature flux linkage and a higher harmonics current control device that implements control so as to match a higher harmonics order component of the motor current with the higher harmonics current command value in a dhqh coordinate system that rotates in synchronization with a higher harmonics order component of the armature flux linkage.