Patent ID: 6593714
Filing Date: 2003-07-15
Classification: H02P

Abstract:
A motor control apparatus with a current sensor diagnostic apparatus that performs current sensor diagnosis, comprising;two current sensors which detect a first-phase current value and a second-phase current value among three-phase alternating currents flowing to a three-phase AC motor, an inverter which implements drive control on said three-phase AC motor based upon the first-phase current detection value and the second-phase current detection value detected by said two current sensors, and a judging unit which judges whether one of said current sensors is abnormal if either an absolute value of a deviation of the first-phase current detection value relative to a first-phase current command value or an absolute value of a deviation of the second-phase current detection value relative to a second-phase current command value exceeds a first judgement reference value during the drive of said three-phase AC motor.