Title:
MOTOR CONTROL DEVICE, MOTOR CONTROL METHOD, STEERING SYSTEM, AND VEHICLE DRIVE SYSTEM
Document Type and Number:
WIPO Patent Application WO/2023/281794
Kind Code:
A1
Abstract:
This motor control device comprises an inverter circuit that drives a motor, and a control unit that controls the inverter circuit by generating a current command value on the basis of a torque command for the motor and outputting a PWM pulse to the inverter circuit on the basis of the current command value. The control unit sets a phase shift amount of the carrier wave of the PWM pulse, estimates variable torque corresponding to the phase shift amount, and corrects the current command value on the basis of the variable torque.
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Inventors:
HOSHINO KATSUHIRO (JP)
HARA TAKAFUMI (JP)
TSUKAGOSHI TAKAYA (JP)
HARA TAKAFUMI (JP)
TSUKAGOSHI TAKAYA (JP)
Application Number:
PCT/JP2022/005895
Publication Date:
January 12, 2023
Filing Date:
February 15, 2022
Export Citation:
Assignee:
HITACHI ASTEMO LTD (JP)
International Classes:
H02P21/22; H02P21/05
Domestic Patent References:
| WO2014045760A1 | 2014-03-27 |
Foreign References:
| JP2021083276A | 2021-05-27 |
Attorney, Agent or Firm:
SUNNEXT INTERNATIONAL PATENT OFFICE (JP)
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