| 摘要 |
PROBLEM TO BE SOLVED: To improve the temperature protection and performance of a motor. SOLUTION: The temperature (stator temperature) of a motor 10 is measured by a thermosensor 14 and the revolutions of the motor 10 are detected by a revolution sensor 12. A computer 16 calculates a necessary torque command value T in accordance with an acceleration opening degree and, further, restricts the torque command value in accordance with the temperature and the revolutions to supply the value to a power control circuit 18. The higher the revolutions, the greater the output restriction value given by the computer 16. |
