Patent ID: 7728537
Filing Date: 2010-06-01
Classification: H02M,H02P

Abstract:
1. A motor control device comprising a current detecting portion that detects, as detection current, current flowing between a DC power supply outputting a DC voltage and an inverter to which the DC voltage is applied and that drives a three-phase motor, the motor control device detecting motor current flowing in the motor from the detection current and controlling the motor via the inverter based on the motor current, the motor control device further comprising: a specified voltage vector generating portion that generates a specified voltage vector indicating a voltage vector that an applied voltage to the motor should follow based on the motor current; and a specified voltage vector correcting portion that corrects the generated specified voltage vector, wherein the motor control device controls the motor in accordance with the specified voltage vector after the correction, and wherein the specified voltage vector correcting portion corrects the generated specified voltage vector so that the specified voltage vector after the correction becomes a vector outside a region where the motor current cannot be detected.