US 11,891,983 B2
Noise control of wind turbine
Per Egedal, Herning (DK); Tomas Rosenberg Hansen, Horsens (DK); and Stefan Oerlemans, Herning (DK)
Assigned to SIEMENS GAMESA RENEWABLE ENERGY A/S, Brande (DK)
Appl. No. 17/279,256
Filed by Siemens Gamesa Renewable Energy A/S, Brande (DK)
PCT Filed Sep. 10, 2019, PCT No. PCT/EP2019/074028
§ 371(c)(1), (2) Date Mar. 24, 2021,
PCT Pub. No. WO2020/064319, PCT Pub. Date Apr. 2, 2020.
Claims priority of application No. 18196477 (EP), filed on Sep. 25, 2018.
Prior Publication US 2022/0049680 A1, Feb. 17, 2022
Int. Cl. F03D 7/02 (2006.01); F03D 7/04 (2006.01)
CPC F03D 7/0296 (2013.01) [F03D 7/0276 (2013.01); F03D 7/042 (2013.01); F03D 7/048 (2013.01); F05B 2260/966 (2013.01); F05B 2270/101 (2013.01); F05B 2270/327 (2013.01); F05B 2270/328 (2013.01); F05B 2270/329 (2013.01); F05B 2270/333 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A method of adapting noise emission configuration of a plurality wind turbines, the method comprising:
determining total wind turbine related noise levels at a plurality of locations;
selecting a critical location from the plurality of locations that has a highest difference between the total wind turbine related noise level of a considered location and a noise threshold for the considered location, among all of the plurality of locations;
determining that the total wind turbine related noise exceeds the noise threshold;
selecting a wind turbine from the plurality of wind turbines that is closest to the critical location and has a highest noise to power impact ratio for reducing a noise level at the critical location;
reducing a rotational speed setpoint of the selected wind turbine; and
diverting a main noise radiation of the selected wind turbine away from the critical location introducing a yaw offset which yaws the selected turbine.