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:
Feb. 12, 2019
Filed:
Aug. 12, 2016
Ssb Wind Systems Gmbh & Co. KG, Salzbergen, DE;
Fabio Bertolotti, Bad Bentheim, DE;
Jens Van Schelve, Bremen, DE;
SSB Wind Systems GmbH & Co. KG, Salzbergen, DE;
Abstract
A method is disclosed for estimating the surface condition of a blade rotating about a rotational axis in an air or fluid stream. The method involves measuring blade deformations indicative of blade loads acting on the blade to identify actual blade loads (P,R,T), measuring blade-state information (Ψ,Ω,,V) indicative of a blade operational state to identify a given blade operational state (α,Q), providing a clean-surface aerodynamic map () relating blade loads to an ensemble of blade operational states when the blade surface is in a clean state, providing a dirty-surface aerodynamic map () relating blade loads to an ensemble of blade operational states when the blade surface is in a dirty state, estimating the surface condition of the blade by comparing the distance of the actual blade loads (P,R,T) to the blade loads given by the clean-surface aerodynamic map () at the given operational state (α,Q), and the distance of the actual blade loads (P,R,T) to the blade loads given by the dirty-surface aerodynamic map () at the given operational state (α,Q).