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. 26, 2018
Filed:
Apr. 09, 2015
Wobben Properties Gmbh, Aurich, DE;
Wolfgang de Boer, Moormerland, DE;
Wobben Properties GmbH, Aurich, DE;
Abstract
The invention relates to a method for operating at least a first wind turbine including the steps of: recording a tower oscillation, initiating a measure to reduce oscillation if the tower oscillation is or contains a longitudinal oscillation, and if the amplitude of the longitudinal oscillation exceeds a predefined threshold value, and the measure for reducing the oscillation comprises freezing the current pitch angle at the current value for a predefined freezing period, switching the pitch control algorithm used, in particular in such a way that the control speed is reduced, adjusting the yaw position by a predefined yaw angle, switching the operation of the first wind turbine from a first operating mode based on a first power curve to a second operating mode based on a second power curve, and/or if, with regard to the current wind direction, the first wind turbine in a wind park is located behind a second wind turbine, adjusting the rotational speed of the first wind turbine to the rotational speed of the second wind turbine in such a way that the rotational speed of the first wind turbine differs from the rotational speed of the second wind turbine by at least a predefined differential rotational speed.