Title:
CONTROL DEVICE FOR ELECTRIC MOTOR, ELECTRIC VEHICLE, AND CONTROL METHOD FOR ELECTRIC MOTOR
Document Type and Number:
WIPO Patent Application WO/2021/090731
Kind Code:
A1
Abstract:
This control device for an electric motor 200 cooled by a dielectric coolant 300 circulated by a pump 310 is provided with: a current command calculation unit 10 for calculating a current command on the basis of a torque command for the electric motor, a DC voltage applied to a power conversion circuit 100 from a power supply, and a rotor position of the electric motor; and a limiting unit for limiting the maximum value of voltage applied to the electric motor 200 on the basis of the calculated current command, the DC voltage, and the flow rate and temperature of the delectric coolant.
Inventors:
ARAKI TAKAHIRO (JP)
Application Number:
PCT/JP2020/040244
Publication Date:
May 14, 2021
Filing Date:
October 27, 2020
Export Citation:
Assignee:
HITACHI LTD (JP)
International Classes:
H02P29/032; H02M7/48
Domestic Patent References:
| WO2015140867A1 | 2015-09-24 |
Foreign References:
| JP2009060776A | 2009-03-19 | |||
| JP2004343993A | 2004-12-02 | |||
| JP2006032651A | 2006-02-02 |
Attorney, Agent or Firm:
SUNNEXT INTERNATIONAL PATENT OFFICE (JP)
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