| 摘要 |
PROBLEM TO BE SOLVED: To monitor a temperature of a winding of a motor without arranging a temperature detection element to the winding.SOLUTION: A temperature detection element motor 2 for detecting a temperature of a detector 1 is arranged to the detector 1 for detecting a rotational position and a rotational speed of a rotor. An estimation value of a winding temperature variation is acquired based on a current supplied to the winding of the motor. The estimation value of a detector temperature variation is acquired based on the estimation value of the winding temperature variation. A difference of a detector temperature detected by the temperature detection element motor 2 and the estimation value of the detector temperature variation is set to a peripheral temperature. A winding temperature absolute value is estimated by adding the peripheral temperature to the estimation value of winding temperature variation. The winding temperature is monitored by the estimated winding temperature absolute value.SELECTED DRAWING: Figure 1 |
