Title:
MOTOR CONTROL METHOD AND MOTOR CONTROL DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/152785
Kind Code:
A1
Abstract:
This motor control method for a winding field type synchronous motor comprising a rotor having a rotor winding and a stator having a stator winding controls stator current flowing through the stator winding and rotor current flowing through the rotor winding. According to the motor control method, a torque command value for generating desired torque is set for the winding field type synchronous motor, and a d-axis current command value and a q-axis current command value for stator current, and an f-axis current command value for rotor current, are calculated on the basis of the torque command value and the operation status of the winding field type synchronous motor. Additionally, an f-axis voltage is estimated, which is the voltage that is applied to the rotor winding and necessary for controlling the rotor current with respect to the f-axis current command value at a prescribed response speed. When the voltage that can be outputted, which is determined on the basis of the power supply voltage, is insufficient with respect to the estimated f-axis voltage, the d-axis current command value is corrected in accordance with the insufficiency, and the winding field type synchronous motor is controlled on the basis of the d-axis current command value, the q-axis current command value, and the f-axis current command value.
Inventors:
KOMATSU HIROYUKI (JP)
MOTOSUGI JUN (JP)
MOTOSUGI JUN (JP)
Application Number:
PCT/JP2019/001902
Publication Date:
July 30, 2020
Filing Date:
January 22, 2019
Export Citation:
Assignee:
NISSAN MOTOR (JP)
International Classes:
H02P21/26; H02P21/05; H02P25/022
Domestic Patent References:
| WO2017014249A1 | 2017-01-26 |
Foreign References:
| JPH11313498A | 1999-11-09 | |||
| JPS6115392B2 | 1986-04-23 |
Attorney, Agent or Firm:
GOTOH & PARTNERS (JP)
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