Title:
ELECTRIC-MOTOR START CONTROL METHOD, APPARATUS AND SYSTEM
Document Type and Number:
WIPO Patent Application WO/2024/098861
Kind Code:
A1
Abstract:
Provided in the present invention are an electric-motor start control method, apparatus and system. The method comprises: obtaining a cumulated electric-parameter value on the basis of the cumulation of electric parameters, and alternately assigning the cumulated electric-parameter value to a direct-axis electric parameter and a quadrature-axis electric parameter; obtaining a strong-dragging angle on the basis of the cumulation of angles; generating a control signal for an electric motor on the basis of a real-time direct-axis electric parameter, a real-time quadrature-axis electric parameter and a real-time strong-dragging angle, and driving the electric motor to operate; and repeating the above steps until the direct-axis electric parameter or the quadrature-axis electric parameter reaches a target electric parameter, continuing to cumulate the strong dragging angles, performing strong dragging on the electric motor on the basis of the corresponding control signal, and when the strong-dragging angle is equal to the angle of a rotor, completing the start of the electric motor. Direct-axis and quadrature-axis voltages (or currents) are controlled to alternately cumulate In order to perform strong dragging on the electric motor, which is embodied as alternately applying forces, which are in two mutually perpendicularly directions, to the rotor. The present invention can shorten the start duration of an electric motor and reduce occupied resources in a CPU; moreover, the process of a starting operation is simple, and the electric motor can be started no matter where a rotor of the electric motor is.
Inventors:
LI YAFEI (CN)
ZHAO XUDONG (CN)
HUA CHUN (CN)
ZHAO XUDONG (CN)
HUA CHUN (CN)
Application Number:
PCT/CN2023/112009
Publication Date:
May 16, 2024
Filing Date:
August 09, 2023
Export Citation:
Assignee:
CRM ICBG WUXI CO LTD (CN)
International Classes:
H02P21/34; H02P6/20
Foreign References:
| CN109660156A | 2019-04-19 | |||
| CN108540016A | 2018-09-14 | |||
| CN111987942A | 2020-11-24 | |||
| CN109150020A | 2019-01-04 | |||
| CN110165960A | 2019-08-23 | |||
| US20110050140A1 | 2011-03-03 |
Attorney, Agent or Firm:
J.Z.M.C. PATENT AND TRADEMARK LAW OFFICE (GENERAL PARTNERSHIP) (CN)
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