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:
Aug. 25, 2020
Filed:
Jul. 02, 2013
Applicant:
Dyson Technology Limited, Wiltshire, GB;
Inventors:
Stephen Greetham, Malmesbury, GB;
David John Hawker, Malmesbury, GB;
Assignee:
Dyson Technology Limited, Malmesbury, Wiltshire, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02K 1/24 (2006.01); B60L 15/08 (2006.01); H02P 1/04 (2006.01); H02P 29/64 (2016.01); H02P 29/032 (2016.01); H02P 29/62 (2016.01); H02P 31/00 (2006.01);
U.S. Cl.
CPC ...
H02P 1/04 (2013.01); H02P 29/032 (2016.02); H02P 29/62 (2016.02); H02P 29/64 (2016.02); H02P 31/00 (2013.01);
Abstract
A method of controlling a brushless motor that includes sensing a temperature and using the sensed temperature to define a current limit. A lower current limit is then defined for a lower sensed temperature. A winding of the motor is sequentially energized and de-energized, with the winding being de-energized when current in the winding exceeds the defined current limit.