MOTOR CONTROL DEVICE

WIPO Patent Application WO/2020/110740

A1

In steps S54 to S55, if the rate of change Δτ* in the torque command value to a motor 10 is equal to or greater than a predetermined value, the frequency switching speed Δfc of carrier frequency fc is set on the basis of the rotational speed N of the motor 10 so that the response frequency ωfc of the frequency switching speed Δfc of the carrier frequency fc is faster than the response frequency ωACR of a current control unit 70. In steps S54 and S56, if the rate of change Δτ* in the torque command value to the motor 10 is less than the predetermined value, the frequency switching speed Δfc of the carrier frequency fc is set on the basis of the torque command value τ* to the motor 10 and the rotational speed N of the motor 10 independently of the response frequency ωACR of the current control unit 70. According to the present invention, it is possible to, while preventing the response of the motor control device from deteriorating, suppress the torque fluctuation at the time of switching of the carrier frequency and stably drive the motor over a wide operation range .

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TAKAOKA MIDORI (JP)
HARA TAKAFUMI (JP)
AOYAGI SHIGEHISA (JP)
MATSUI HIROKAZU (JP)
NONOMURA SHIGEYUKI (JP)

PCT/JP2019/044626

June 04, 2020

November 14, 2019

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HITACHI AUTOMOTIVE SYSTEMS LTD (JP)

B62D6/00; H02M7/48; H02P27/08; B62D101/00; B62D113/00; B62D119/00

JP2015080343A	2015-04-23
JP2011097672A	2011-05-12
JP2008301656A	2008-12-11
JP2009207323A	2009-09-10

TODA Yuji (JP)

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