MOTOR CONTROL DEVICE, AND ELECTRIC POWER STEERING DEVICE AND VEHICLE USING SAME

摘要

Provided are: a motor control device capable of continuing to drive-control an electric motor even when an open circuit fault or a short circuit fault occurs in a motor drive circuit; and an electric power steering device and a vehicle using the same. This motor control device is equipped with: a command-value calculation unit (31) for outputting a command value to a poly-phase electric motor (22) having at least first and second poly-phase motor windings wound in a concentrated winding around a stator, in a manner such that there is no interlinkage of identical magnetic flux from each rotor pole; motor drive circuits (32A, 32B) for separately supplying a poly-phase motor drive current to each of the poly-phase motor windings on the basis of the command value; poly-phase motor current blocking units (33A, 33B) respectively interposed between each motor drive circuit and each poly-phase motor winding; an abnormality detection unit (31a) for separately detecting an abnormality in each poly-phase motor drive current or voltage; and an abnormality-time-current control unit for controlling the motor-current blocking unit on the side on which an abnormality is detected so as to be in a current-blocked state, when one of the abnormality detection units detects an abnormality in at least a single-phase motor drive current.