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:
Mar. 06, 2018
Filed:
Dec. 20, 2011
Applicant:
Erik Carl Lehnskov Miranda, Randers SV, DK;
Inventor:
Erik Carl Lehnskov Miranda, Randers SV, DK;
Assignee:
VESTAS WIND SYSTEMS A/S, Aarhus N, DK;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F03D 7/02 (2006.01); F03D 7/04 (2006.01);
U.S. Cl.
CPC ...
F03D 7/0296 (2013.01); F03D 7/0224 (2013.01); F03D 7/043 (2013.01); F03D 7/046 (2013.01); F05B 2260/80 (2013.01); F05B 2260/96 (2013.01); F05B 2270/1095 (2013.01); F05B 2270/309 (2013.01); F05B 2270/327 (2013.01); F05B 2270/328 (2013.01); Y02E 10/723 (2013.01);
Abstract
A wind turbine including a controller configured to periodically enter an Eigen frequency detection mode in which the controller gain is incremented in a controlled manner to detect the Eigen frequencies. During normal operations, the controller output may be monitored to detect the Eigen frequency which, if detected, may allow damage control operations to be undertaken.