MOTOR CONTROL DEVICE AND METHOD FOR CONTROLLING MOTOR CONTROL DEVICE

WIPO Patent Application WO/2012/014249

A1

Disclosed is a motor control device that detects abnormalities of a motor or of a machine corresponding to the load of the motor, and thus is effective in protecting the motor or machine. Further disclosed is a method for controlling same. The device compares a second torque value and a motor velocity detected from the motor while the motor is running to a lower bound and an upper bound of a torque tolerance determined from a third torque value. As a result, when the abovementioned third torque value falls outside of the abovementioned lower bound or upper bound of the torque tolerance, the motor is halted in accordance with the difference between the abovementioned third torque and the torque tolerance. As a result of the above, in all velocity ranges of the motor including a low-velocity region, abnormalities of the motor are rapidly and accurately detected and the device is effective in protecting the motor or the machine corresponding to the load of the motor.

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NOGUCHI, Tomohiro (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
野口　智弘 (〒10 東京都千代田区丸の内二丁目７番３号三菱電機株式会社内 Tokyo, 〒1008310, JP)

JP2010/004740

February 02, 2012

July 26, 2010

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MITSUBISHI ELECTRIC CORPORATION (7-3 Marunouchi 2-chome, Chiyoda-ku Tokyo, 10, 〒1008310, JP)
三菱電機株式会社 (〒10 東京都千代田区丸の内二丁目７番３号 Tokyo, 〒1008310, JP)
NOGUCHI, Tomohiro (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)

H02P29/00

TAKAHASHI, Shogo et al. (7-3Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)

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