Title:
MOTOR CONTROL DEVICE, MOTOR CONTROL METHOD, AND MOTOR SYSTEM
Document Type and Number:
WIPO Patent Application WO/2019/230818
Kind Code:
A1
Abstract:
In an embodiment of the present invention, a motor control device controls a permanent magnet synchronous motor (100) which has a stator (100S) and a rotor (100R), and said motor control device comprises a processor (90) and memory (95), which stores a program (95) controlling an operation of the processor. The processor, on the basis of a speed command or a torque command, determines a q axis current in a dq axis coordinate system, which rotates in sync with the rotation of the rotor, and determines a value, which is obtained from an Nth degree harmonic current having been superimposed on a q axis current, as a q axis current command value, said Nth degree harmonic current having a phase which is inverse to a phase of an Nth degree harmonic component of cogging torque in the permanent magnet synchronous motor.
Inventors:
YAMADA YUKIE (JP)
WATAHIKI MASANORI (JP)
WATAHIKI MASANORI (JP)
Application Number:
PCT/JP2019/021336
Publication Date:
December 05, 2019
Filing Date:
May 29, 2019
Export Citation:
Assignee:
NIDEC CORP (JP)
International Classes:
H02P21/05; H02P21/22; H02P25/022
Domestic Patent References:
| WO2005035333A1 | 2005-04-21 |
Foreign References:
| JP2001095274A | 2001-04-06 | |||
| JPS5441416A | 1979-04-02 | |||
| US20140217938A1 | 2014-08-07 |
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