Patent ID: 8164288
Filing Date: 2012-04-24
Classification: H02P

Abstract:
1. A motor control device that controls a motor with a stator having armature winding and a rotor having a permanent magnet, comprising: a torque fluctuation component estimation unit for estimating a torque fluctuation component generated at the motor based on flux-linkage of the armature winding and an armature current that flows the armature winding; wherein the motor control is performed based on the estimated torque fluctuation component; wherein the torque fluctuation component estimation unit estimates the torque fluctuation component based on an inner product of a flux-linkage vector which is a vectorial representation of the flux-linkage or a vector according to the flux-linkage and a current vector which is a vectorial representation of the armature current, and wherein when a first component and a second component of the flux-linkage vector or the vector according to the flux-linkage are respectively φ