US 11,988,194 B2
Detecting a wind turbine rotor blade adjustment fault
Per Egedal, Herning (DK)
Assigned to SIEMENS GAMESA RENEWABLE ENERGY A/S, Brande (DK)
Appl. No. 17/299,544
Filed by Siemens Gamesa Renewable Energy A/S, Brande (DK)
PCT Filed Oct. 31, 2019, PCT No. PCT/EP2019/079834
§ 371(c)(1), (2) Date Jun. 3, 2021,
PCT Pub. No. WO2020/120016, PCT Pub. Date Jun. 18, 2020.
Claims priority of application No. 18212373 (EP), filed on Dec. 13, 2018.
Prior Publication US 2022/0025853 A1, Jan. 27, 2022
Int. Cl. F03D 7/02 (2006.01); F03D 17/00 (2016.01)
CPC F03D 7/0224 (2013.01) [F03D 7/0232 (2013.01); F03D 7/0244 (2013.01); F03D 7/0276 (2013.01); F03D 17/00 (2016.05); F05B 2240/3052 (2020.08); F05B 2260/80 (2013.01); F05B 2260/84 (2013.01); F05B 2270/101 (2013.01); F05B 2270/327 (2013.01); F05B 2270/335 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A method of detecting an adjustment fault related to a wind turbine rotor blade mounted at a wind turbine rotor and comprising an adaptable flow regulating device, the method comprising:
estimating a first quantity indicative of a change of a driving impact of wind on the wind turbine rotor based on at least two settings of the adaptable flow regulating device that is installed on a surface of the wind turbine rotor blade;
determining a second quantity indicative of a desired change of the driving impact on the wind turbine rotor to change a value of a rotor speed to a reference value of the rotor speed; and
indicating an adjustment fault based on a comparison of the first quantity with the second quantity.