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:
Jul. 18, 2017
Filed:
Apr. 22, 2013
Vestas Wind Systems A/s, Aarhus N, DK;
Keld Hammerum, Hadsten, DK;
Thomas Krüger, Tilst, DK;
VESTAS WIND SYSTEMS A/S, Aarhus N, DK;
Abstract
A method for controlling an individually pitched wind turbine during shutdown is disclosed, the wind turbine comprising at least three wind turbine blades (). In response to a shutdown command for stopping operation of the wind turbine, a blade parameter of each of the wind turbine blades (), e.g. pitch angle, bending moment or blade acceleration, is determined. The blade parameters of the wind turbine blades () are compared, and a shutdown strategy for the wind turbine is selected from a group of two or more predefined shutdown strategies, based on the comparing step. Finally, the wind turbine blades () are moved towards a feathered position in accordance with the selected shutdown strategy.