Title:
METHOD FOR CONTROLLING SEMI-CENTRALIZED OPEN-WINDING MULTI-MOTOR DRIVE SYSTEM
Document Type and Number:
WIPO Patent Application WO/2024/060591
Kind Code:
A1
Abstract:
Disclosed is a method for controlling a semi-centralized open-winding multi-motor drive system in the field of motor control. The control method is as follows: firstly, a hardware circuit measures the current and direct-current bus voltage of a system, a position sensor measures the angle of each motor and calculates system speed, and a speed ring calculates the thrust of the motor drive system; then, by combining the rated current, flux linkage, and thrust of each motor, thrust is distributed to each motor and is converted into the form of a q-axis current, a current ring calculates the dq-axis voltage required by each motor, and a voltage demand is converted into an abc coordinate system by means of coordinate transformation; subsequently, the voltage of each motor is modulated into a duty cycle command, to determine whether the motor is in an over-modulation operation region, and over-modulation processing is performed on the voltage in the over-modulation operation region; and finally, the duty cycle command of the motor is distributed to an independent inverter and a common inverter. According to the control method of the present invention, the hardware costs can be reduced and the safety and reliability of the system are improved.
Inventors:
WANG WEI (CN)
TIAN WEIJIE (CN)
CHENG MING (CN)
TIAN WEIJIE (CN)
CHENG MING (CN)
Application Number:
PCT/CN2023/087733
Publication Date:
March 28, 2024
Filing Date:
April 12, 2023
Export Citation:
Assignee:
UNIV SOUTHEAST (CN)
International Classes:
H02P21/00; H02P5/46; H02P5/52; H02P21/14; H02P21/22
Foreign References:
| CN115473465A | 2022-12-13 | |||
| CN112865613A | 2021-05-28 | |||
| CN114679088A | 2022-06-28 | |||
| CN114944803A | 2022-08-26 | |||
| JP2020031458A | 2020-02-27 |
Other References:
BINQIANG SI, HUANG YUPING; ZHU JIHONG; YU HANG: "Active reconfigurable and fault-tolerant control technology for high reliability motor system", ACTA AERONAUTICA ET ASTRONAUTICA SINICA, vol. 42, no. 11, 22 March 2021 (2021-03-22), pages 524853 - 524853-15, XP093149326
AN, QUNTAO ET AL.: "Dual-Space Vector Control of Open-End Winding Permanent Magnet Synchronous Motor Drive Fed by Dual Inverter", IEEE TRANSACTIONS ON POWER ELECTRONICS, vol. 31, no. 12, 31 December 2016 (2016-12-31), XP011616415, DOI: 10.1109/TPEL.2016.2520999
AN, QUNTAO ET AL.: "Dual-Space Vector Control of Open-End Winding Permanent Magnet Synchronous Motor Drive Fed by Dual Inverter", IEEE TRANSACTIONS ON POWER ELECTRONICS, vol. 31, no. 12, 31 December 2016 (2016-12-31), XP011616415, DOI: 10.1109/TPEL.2016.2520999
Attorney, Agent or Firm:
BEIJING TONGHUI INTELLECTUAL PROPERTY AGENCY (GENERAL PARTNERSHIP) (CN)
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