Patent ID: 9270213
Filing Date: 2016-02-23
CPC Classification: B62D,H02P

Claim Text:
1. A motor control device comprising: a drive circuit that supplies drive electric power in three phases to a motor, according to turning on or off of switching elements disposed in phase feeding paths for the motor; a control unit that computes voltage command values of the three phases for the motor through current feedback control that causes current values of the three phases for the motor to follow current command values corresponding to a target output of the motor, and generates control signals for turning on or off the switching elements, based on the voltage command values of the three phases; and an abnormality detecting portion, wherein when one of the three phases is set as a specific phase, the abnormality detecting portion determines that a current-carrying failure occurs in the specific phase on a condition that all of (i) a condition that an absolute value of the current value of the specific phase is less than a predetermined first current determination value, (ii) a condition that an absolute value of the voltage command value of the specific phase is equal to or greater than a predetermined voltage command determination value, and (iii) a condition that the voltage command value of the specific phase is deviated from the voltage command values of two phases other than the specific phase are satisfied.