Title:
MOTOR CONTROL DEVICE, MOTOR MODULE, AND MOTOR CONTROL METHOD
Document Type and Number:
WIPO Patent Application WO/2022/208912
Kind Code:
A1
Abstract:
This motor control device controls a motor. The motor comprises a rotor, a stator, and a Hall sensor. The stator has multi-phase windings. The Hall sensor detects the rotation position of the rotor. The motor control device comprises an inverter circuit, an estimation unit, an energization control unit, and a correction unit. The inverter circuit applies a driving voltage to the multi-phase windings. The estimation unit estimates the position of the rotor on the basis of the change of a magnetic pole detected by the Hall sensor. The energization control unit controls an energization timing to each of the multi-phase windings on the basis of the estimated position of the rotor. The correction unit corrects the energization timing on the basis of misalignment between each of the multi-phase windings and the Hall sensor. The correction unit determines a correction value on the basis of an extreme value of the rotational speed when the setting position of the Hall sensor is changed under open control.
Inventors:
NAGAHISA TETSUZO (JP)
Application Number:
PCT/JP2021/022347
Publication Date:
October 06, 2022
Filing Date:
June 11, 2021
Export Citation:
Assignee:
NIDEC CORP (JP)
International Classes:
H02P6/16
Domestic Patent References:
| WO2014038144A1 | 2014-03-13 | |||
| WO2016104378A1 | 2016-06-30 |
Foreign References:
| JP2015062329A | 2015-04-02 | |||
| JP2019213389A | 2019-12-12 |
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