Title:
MOTOR CONTROL METHOD, MOTOR CONTROL SYSTEM, AND ELECTRIC POWER STEERING SYSTEM
Document Type and Number:
WIPO Patent Application WO/2018/159099
Kind Code:
A1
Abstract:
This motor control method includes: a step in which the armature magnetic flux, the combined magnetic flux, the stator current, and the stator voltage are acquired from a phasor representation using an αβ fixed coordinate system or a dq rotary coordinate system as a reference; a step in which the angle ϕ between the stator current and the stator voltage is calculated; a step in which the torque angle δ is calculated on the basis of formula (1), wherein ψa represents the size of the armature magnetic flux, and ψs represents the size of the combined magnetic flux; and a step in which a surface magnet-type motor is controlled on the basis of the torque angle δ.
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Inventors:
GHADERI AHMAD (JP)
Application Number:
PCT/JP2018/000147
Publication Date:
September 07, 2018
Filing Date:
January 09, 2018
Export Citation:
Assignee:
NIDEC CORP (JP)
International Classes:
H02P21/14; B62D5/04; B62D6/00; H02P6/08; H02P25/022
Domestic Patent References:
| WO2014034291A1 | 2014-03-06 |
Foreign References:
| JP2005151678A | 2005-06-09 | |||
| JP2000050697A | 2000-02-18 |
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