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. 20, 2021
Filed:
Jul. 26, 2017
Nidec Ssb Wind Systems Gmbh, Salzbergen, DE;
Fabio Bertolotti, Bad Bentheim, DE;
NIDEC SSB WIND SYSTEMS GMBH, Salzbergen, DE;
Abstract
The invention relates to a method for pitch angle measurement and/or for constructing a pitch angle measurement system on a rotor blade () of a wind turbine, the rotor blade comprising a blade root () and extending along a longitudinal blade axis (). The rotor blade is rotatably mounted, by its blade root (), to rotate about the longitudinal blade axis (), on a rotor hub () of the wind turbine, the rotor hub rotating or being rotatable about a rotor axis (). At least one chord line direction indicator () is firmly connected to the rotor blade () at a distance from the blade root (), and defines a chord line direction indicator direction () indicative of a direction of a chord line () of the rotor blade () at the location of the chord line direction indicator (). The rotor blade (), or at least one rotor blade portion () of the rotor blade firmly connected to the chord line direction indicator (), is produced in a mould () before being connected to the chord line direction indicator (). While the rotor blade () or rotor blade portion () is in the mould (), the chord line direction indicator () is firmly connected to the rotor blade () or rotor blade portion () in a position which is defined relative to the mould ().