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. 21, 2011
Filed:
Oct. 01, 2010
Erik Carl Lehnskov Miranda, Randers SV, DK;
Imad Abdallah, Århus C, DK;
Poul Brandt Christensen, Ry, DK;
Ali Zaib, Alaborg, DK;
Thomas Tvilum Bachmann, Ålborg, DK;
Erik Carl Lehnskov Miranda, Randers SV, DK;
Imad Abdallah, Århus C, DK;
Poul Brandt Christensen, Ry, DK;
Ali Zaib, Alaborg, DK;
Thomas Tvilum Bachmann, Ålborg, DK;
Vestas Wind Systmes A/S, Randers SV, DK;
Abstract
A method of controlling a wind turbine, where a control signal for a controllable parameter of the wind turbine is determined, and the rotor power coefficient, the torque coefficient, and/or a thrust coefficient of the wind turbine are estimated at time intervals. From this is determined a variation parameter reflecting the variation of the estimated rotor power, torque or thrust coefficient over time. The wind turbine is then controlled according to the control signal only if the variation parameter is below an alert threshold, and otherwise according to a modified control strategy. The control signal may have a power or torque reference signal for controlling the rotational speed of the turbine or a blade pitch reference signal. The modified control method may for instance entail stopping or de-rating the wind turbine. A control system configured to perform the above control method, and a wind turbine comprising such system are also disclosed.