CONTROLLER FOR MOTOR, AND VEHICLE

摘要

When the occurrence of a short-circuit failure of any of switch portions (13) including switch elements (11) and feedback diodes (12) connected in parallel to the switch elements (11) of an inverter circuit (7) is detected during the operation of a motor (1), a switch portion (13) in which the short-circuit failure has occurred is judged whether the occurrence thereof is on the positive polarity side or on the negative polarity side. The switch elements (11) are so controlled that all the switch portions (13) on the same polarity side as the switch portion (13) in which the short-circuit has occurred are brought into a conducted state and all the switch elements (11) on the different polarity side are brought into a disconnected state. This prevents a large electric current from flowing into each switch portion of the inverter circuit without requiring any switch to block the power distribution between a motor and the inverter circuit when a short-circuit failure of the switch portion of the inverter circuit occurs.