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:
Apr. 05, 2022
Filed:
Apr. 25, 2017
Applicant:
Dyson Technology Limited, Wilts, GB;
Inventors:
Libo Zheng, Swindon, GB;
Min Zhang, Swindon, GB;
Assignee:
Dyson Technology Limited, Malmesbury, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02P 1/46 (2006.01); H02P 3/14 (2006.01); H02P 1/02 (2006.01);
U.S. Cl.
CPC ...
H02P 1/46 (2013.01); H02P 1/029 (2013.01); H02P 3/14 (2013.01);
Abstract
A method is described for controlling an electric motor having a rotor. The method is carried out after a shutdown of the motor has been initiated. The method includes starting a timer in a motor controller, performing regenerative braking to recapture kinetic energy from the rotor as electrical energy, and using the recaptured electrical energy from the regenerative braking to power the motor controller. If the timer in the motor controller exceeds a predetermined timer value, a flag is set in memory in the motor controller to indicate that the motor has stopped.