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:
Nov. 03, 2020
Filed:
May. 18, 2017
Applicant:
Beijing Goldwind Science & Creation Windpower Equipment Co., Ltd., Beijing, CN;
Inventors:
Assignee:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F03D 7/04 (2006.01); F03D 7/02 (2006.01);
U.S. Cl.
CPC ...
F03D 7/042 (2013.01); F03D 7/0224 (2013.01); F03D 7/0292 (2013.01); F05B 2260/74 (2013.01); F05B 2270/1095 (2013.01); F05B 2270/32 (2013.01); F05B 2270/327 (2013.01); F05B 2270/328 (2013.01); Y02E 10/723 (2013.01);
Abstract
A method and a device for use in variable-pitch control of a wind turbine, in said method: if a current wind speed is continuously maintained at a small wind speed, then periodically detecting whether a maintained duration of a current pitch angle of a wind turbine reaches a preset duration; once the preset duration is reached, switching a current minimum pitch angle to another minimum pitch angle.