| 摘要 |
PROBLEM TO BE SOLVED: To provide a technology for canceling a locked state of an induction motor of a vehicle power device.SOLUTION: A lock detection unit 32 detects a locked state in which current continues to flow in one phase of an induction motor for a period equal to or longer than predetermined time. A lock cancel slip frequency calculation unit 40 acquires a lock cancel slip frequency for making an electric frequency be out of a locked range. When a locked state is detected, a motor control unit 42 controls the induction motor so that its slip frequency becomes a lock cancel slip frequency. For example, the motor control unit 42 acquires a torque value corresponding to the rock cancel slip frequency by referring to prestored correspondence table data 38 showing relation between a slip frequency and torque; and controls the induction motor by taking the torque value as a torque command. |
