The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 04, 2023
Filed:
Jul. 26, 2021
Guangdong Midea White Home Appliance Technology Innovation Center Co., Ltd., Foshan, CN;
Midea Group Co., Ltd., Foshan, CN;
GUANGDONG MIDEA WHITE HOME APPLIANCE TECHNOLOGY INNOVATION CENTER CO., LTD., Foshan, CN;
MIDEA GROUP CO., LTD., Foshan, CN;
Abstract
A method and apparatus for estimating a rotor position of a motor, and a motor control system. The method includes: obtaining a position error signal by injecting a high-frequency signal into a stator winding of the motor; obtaining a load parameter indicating a load of the motor, obtaining a direct-current component disturbance value according to the load parameter and a first preset relationship, obtaining a harmonic component disturbance value according to the load parameter and a second preset relationship, and obtaining an observer parameter value according to the load parameter and a third preset relationship; compensating the position error signal according to the direct-current component disturbance value and the harmonic component disturbance value to obtain a compensated position error signal; adjusting an observer parameter according to the observer parameter value, and adjusting the compensated position error signal through an adjusted observer to obtain the rotor position and a rotor speed.