Title:
CONTROL METHOD AND APPARATUS FOR PERMANENT-MAGNET SYNCHRONOUS ELECTRIC MOTOR, AND PERMANENT-MAGNET SYNCHRONOUS ELECTRIC MOTOR CONTROL SYSTEM
Document Type and Number:
WIPO Patent Application WO/2023/024029
Kind Code:
A1
Abstract:
Provided in the present application are a control method and apparatus for a permanent-magnet synchronous electric motor, and a permanent-magnet synchronous electric motor control system. The method comprises: acquiring a d-axis current id and a q-axis current iq in a permanent-magnet synchronous electric motor control loop at the current moment; acquiring a fifth harmonic current id5th and a seventh harmonic current id7th in the d-axis current id in the permanent-magnet synchronous electric motor control loop at the current moment, and a fifth harmonic current iq5th and a seventh harmonic current iq7th in the q-axis current iq in the permanent-magnet synchronous electric motor loop at the current moment; determining a d-axis current ik+1 d at the next moment of each switch state; on the basis of a first current ik d, a second current ik q, and a second voltage of each switch state, determining a q-axis current ik+1 q at the next moment of each switch state; and on the basis of the d-axis current ik+1 d at the next moment of each switch state and the q-axis current ik+1 at the next moment of each switch state, determining a control policy for a permanent-magnet synchronous electric motor. In this way, an original PI controller is canceled, thereby preventing complex PI parameter adjustment.
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Inventors:
ZHENG XIONG (CN)
PAN XIANXI (CN)
LUO YU (CN)
DAN ZHIMIN (CN)
PAN XIANXI (CN)
LUO YU (CN)
DAN ZHIMIN (CN)
Application Number:
PCT/CN2021/114792
Publication Date:
March 02, 2023
Filing Date:
August 26, 2021
Export Citation:
Assignee:
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD (CN)
International Classes:
H02P21/22
Foreign References:
| CN104579042A | 2015-04-29 | |||
| CN104300541A | 2015-01-21 | |||
| CN106817059A | 2017-06-09 | |||
| JP2015159666A | 2015-09-03 |
Other References:
See also references of EP 4167468A4
Attorney, Agent or Firm:
BEIJING WEIFEI LIANCHUANG INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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