| 摘要 |
<P>PROBLEM TO BE SOLVED: To restrain an inverter circuit from overheating even at abnormal times when a device for pressure-sending coolant for cooling the inverter circuit stops its drive. <P>SOLUTION: At normal times when abnormality where the water pump of a cooling system stops does not occur (S110) while the second motor stops its rotation, the upper limit torque Tlim of the second motor is set (S130 and S140), using a map for setting the upper limit torque at rotation stoppage of the motor, in a range of cooling water temperature Tw being over the first cooling water temperature, and at abnormal times when abnormality where the water pump stops its drive, the upper limit torque Tlim of the second motor is set (S130 and S150), using a map for setting of the upper limit torque at rotation stoppage of the motor, in a range of the cooling water temperature Tw being over the second cooling water temperature that is lower by offset temperature ΔT than the first cooling water temperature, thereby controlling the second motor (S160 and S170). Hereby, even at abnormal times when the water pump stops its drive, it restrains the inverter for the second motor from overheating. <P>COPYRIGHT: (C)2010,JPO&INPIT |
