US 11,815,065 B2
Method and system for detecting a wind gust that affects a wind turbine
Martin Folmer Andersen, København (DK)
Assigned to SIEMENS GAMESA RENEWABLE ENERGY A/S, Brande (DK)
Appl. No. 17/608,491
Filed by Siemens Gamesa Renewable Energy A/S, Brande (DK)
PCT Filed Apr. 15, 2020, PCT No. PCT/EP2020/060540
§ 371(c)(1), (2) Date Nov. 3, 2021,
PCT Pub. No. WO2020/229075, PCT Pub. Date Nov. 19, 2020.
Claims priority of application No. 19174863 (EP), filed on May 16, 2019.
Prior Publication US 2022/0213873 A1, Jul. 7, 2022
Int. Cl. F03D 17/00 (2016.01); F03D 7/02 (2006.01)
CPC F03D 17/00 (2016.05) [F03D 7/0224 (2013.01); F05B 2260/80 (2013.01); F05B 2270/322 (2013.01); F05B 2270/33 (2013.01); F05B 2270/331 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A method for detecting a wind gust that affects a wind turbine, wherein the wind turbine comprises two or more blades which are coupled to a connection means so that the blades are essentially arranged in a common plane, the method comprising:
measuring an event that at least one blade is at least partially out of the common plane, thereby obtaining a measurement signal;
providing the measurement signal as a measurement input signal to an evaluation algorithm wherein the evaluation algorithm comprises a likelihood estimation;
providing a reference mean value and a reference standard deviation value, together with the measurement input signal, to the evaluation algorithm;
elaborating a detection result from the measurement input signal, the reference mean value, and the reference standard deviation value using the evaluation algorithm; and
comparing the detection result with a predefined wind gust threshold value to determine if a wind gust is detected.