Title:
METHOD AND APPARATUS FOR CONTROLLING OIL-GAS PUMP ELECTRIC MOTOR
Document Type and Number:
WIPO Patent Application WO/2021/253782
Kind Code:
A1
Abstract:
Disclosed are a method and apparatus for controlling an oil-gas pump electric motor, which relate to the technical field of oil-gas pump electric motors. The method comprises: obtaining a given speed of an electric motor; performing speed regulation on the given speed to obtain a first speed; obtaining a given current corresponding to the given speed of the electric motor; performing current regulation on the given current by means of a second regulation system so as to obtain a first current; obtaining a first closed-loop control system according to the given speed, the first speed and the first current, wherein the first closed-loop control system is an electric motor speed loop control system; obtaining a second closed-loop control system according to the first speed and a phase conversion signal, wherein the second closed-loop control system is a position loop control system; obtaining an AD signal according to the first current; performing filtering processing on the AD signal to obtain a second current; and obtaining a third closed-loop control system according to the first current and the second current, wherein the third closed-loop control system is a current control system. The technical effect of three closed-loop control structures being used to regulate an electric motor, such that the electric motor has a strong anti-interference capability, and the control accuracy is high is achieved.
Inventors:
WANG YIHUAI (CN)
WEI XUETING (CN)
XU CANHAO (CN)
WANG JIN (CN)
JIA CHANGQING (CN)
WEI XUETING (CN)
XU CANHAO (CN)
WANG JIN (CN)
JIA CHANGQING (CN)
Application Number:
PCT/CN2020/139003
Publication Date:
December 23, 2021
Filing Date:
December 24, 2020
Export Citation:
Assignee:
UNIV SOOCHOW (CN)
International Classes:
H02P23/14; F04B49/06; F04B49/20
Foreign References:
| CN111697900A | 2020-09-22 | |||
| CN104477231A | 2015-04-01 | |||
| CN104909314A | 2015-09-16 | |||
| CN204442216U | 2015-07-01 | |||
| CN105204394A | 2015-12-30 | |||
| CN105739301A | 2016-07-06 |
Other References:
WANG GUILAN: "Research on Bldc Motor Control System Applied in Power Wheelchair Based on DSP", CHINESE DOCTORAL DISSERTATIONS & MASTER'S THESES FULL-TEXT DATABASE (MASTER), 1 January 2006 (2006-01-01), pages 1 - 60, XP055881018, ISSN: 1671-6779
Attorney, Agent or Firm:
SUZHOU JIANSHAN INTELLECTUAL PROPERTY AGENCY (SPECIAL GENERAL PARTNERSHIP) (CN)
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