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:
Jun. 23, 2009
Filed:
Oct. 21, 2005
Jens Altemark, Rendsburg, DE;
Jens Altemark, Rendsburg, DE;
REpower Systems AG, Hamburg, DE;
Abstract
The invention relates to a wind turbine comprising a machine housing () equipped with a rotor (), which is mounted to pivot on a sub-structure (). Wind parameters and an electromechanical quantity are determined by means of measuring devices (). To enable the machine housing () to track the wind, the wind turbine is equipped with a pivoting device () comprising a controller (). The wind turbine is also equipped with a calibration module (), which is configured to determine an effective mass of the electromechanical quantity using the wind speed. In addition, the turbine comprises an evaluation device () comprising a classifier (), which is used to form a first average value for a first class, for which the wind direction is positive and a second average value for a second class, for which the wind direction is negative. A difference is determined by means of a comparator and a calibration signal is emitted to the controller () of the pivoting device (). The invention permits an autonomous calibration of the controller () for the tracking of the machine housing () and thus reduces the risk of an erroneous positioning of the rotor () in relation to the wind direction, irrespective of the prevailing wind conditions. The invention is particularly stable in relation to variable wind forces and directions, especially in the presence of gusts.