Title:
MOTOR CONTROL DEVICE, MAGNET TEMPERATURE ESTIMATOR, AND MAGNET TEMPERATURE ESTIMATION METHOD
Document Type and Number:
WIPO Patent Application WO/2021/075186
Kind Code:
A1
Abstract:
Provided are: a motor control device that comprises a magnet temperature estimator that has a simple configuration but can still accurately estimate the magnet temperature of a permanent magnet of a permanent magnet synchronous motor; a magnet temperature estimator for the motor control device; and a magnet temperature estimation method. A magnet temperature estimator 400 that uses a first coefficient that changes in response to the temperature of a coil 380 that is wound on a stator of a motor 300 and a second coefficient that changes in response to the temperature of a cooling oil 340 that cools the motor 300 to estimate the magnet temperature of a permanent magnet that is installed on a rotor 310 of the motor 300.
Inventors:
SATO HIROAKI (JP)
AJIMA TOSHIYUKI (JP)
NONOMURA SHIGEYUKI (JP)
MYOEN KOHEI (JP)
KISHIMOTO EIGO (JP)
AJIMA TOSHIYUKI (JP)
NONOMURA SHIGEYUKI (JP)
MYOEN KOHEI (JP)
KISHIMOTO EIGO (JP)
Application Number:
PCT/JP2020/034407
Publication Date:
April 22, 2021
Filing Date:
September 11, 2020
Export Citation:
Assignee:
HITACHI ASTEMO LTD (JP)
International Classes:
H02P29/66; H02P29/64
Domestic Patent References:
| WO2015170747A1 | 2015-11-12 |
Foreign References:
| JP2019083656A | 2019-05-30 | |||
| JP2008072787A | 2008-03-27 | |||
| JP2013006509A | 2013-01-10 | |||
| JP2018102102A | 2018-06-28 |
Attorney, Agent or Firm:
TODA Yuji (JP)
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