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:
Sep. 12, 2023
Filed:
Nov. 18, 2020
Applicant:
Equinor Energy As, Stavanager, NO;
Inventors:
Bjørn Skaare, Trondheim, NO;
Emil Smilden, Kolsås, NO;
Assignee:
EQUINOR ENERGY AS, Stavanger, NO;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F03D 7/02 (2006.01); F03D 13/25 (2016.01); F03D 7/04 (2006.01);
U.S. Cl.
CPC ...
F03D 7/0296 (2013.01); F03D 7/0224 (2013.01); F03D 7/046 (2013.01); F03D 13/25 (2016.05); F05B 2240/95 (2013.01); F05B 2270/328 (2013.01); F05B 2270/342 (2020.08);
Abstract
A blade pitch controller for a wind turbine includes a nominal control system and a tower feedback loop. The tower feedback loop includes a filtering system. The filtering system is arranged to control wind turbine blade pitch so as to provide additional effective stiffness to the wind turbine in response to motion of the wind turbine which is above a filter frequency of the filtering system.