US 12,297,810 B2
Device and method for controlling a wind turbine based on a change element
Johannes Gerhardes Wardjan Alberts, Brøndby Strand (DK)
Assigned to Siemens Gamesa Renewable Energy A/S, Brande (DK)
Appl. No. 17/610,883
Filed by Siemens Gamesa Renewable Energy A/S, Brande (DK)
PCT Filed Apr. 14, 2020, PCT No. PCT/EP2020/060386
§ 371(c)(1), (2) Date Nov. 12, 2021,
PCT Pub. No. WO2020/233907, PCT Pub. Date Nov. 26, 2020.
Claims priority of application No. 19175350 (EP), filed on May 20, 2019.
Prior Publication US 2022/0213869 A1, Jul. 7, 2022
Int. Cl. F03D 7/02 (2006.01); F03D 7/04 (2006.01)
CPC F03D 7/0224 (2013.01) [F03D 7/0276 (2013.01); F03D 7/043 (2013.01); F05B 2270/101 (2013.01); F05B 2270/322 (2013.01); F05B 2270/327 (2013.01); F05B 2270/328 (2013.01); F05B 2270/331 (2013.01); F05B 2270/335 (2013.01); F05B 2270/702 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A control device for controlling a wind turbine, the wind turbine comprising a rotor and at least one blade being rotatable mounted to the rotor, the control device comprising:
a detecting device configured to detect an amount of a bending moment of the blade; and
a change element having an input and an output, wherein the input is configured to receive the detected amount of the bending moment of the blade and the output is configured to output a response to a differential of the detected amount of the bending moment of the blade;
wherein the control device is configured to control the wind turbine using a response behaviour based on the response,
wherein the response behaviour is based directly on a derivative element that provides a phase lead over changes in rotor speed, and
wherein the control device is configured to modify a speed control of the rotor by increasing a torque reference, a power reference and/or a pitch reference when the response is positive, and by decreasing the torque reference, the power reference and/or the pitch reference when the response is negative.
 
10. A wind turbine comprising:
a tower;
a rotor, the rotor being mounted at the top of the tower to rotate about a rotational axis, wherein the rotor has a plurality of blades; and
a control device including a detecting device configured to detect an amount of a bending moment of the blade and a change element having an input and an output, wherein the input is configured to receive the detected amount of the bending moment of the blade and the output is configured to output a response to a differential of the detected amount of the bending moment of the blade, wherein the control device is configured to control the wind turbine using a response behaviour based on the response, wherein the response behaviour is based directly on a derivative element that provides a phase lead over changes in rotor speed, and wherein the control device is configured to modify a speed control of the rotor by increasing a torque reference, a power reference and/or a pitch reference when the response is positive, and by decreasing the torque reference, the power reference and/or the pitch reference when the response is negative.
 
13. A method of controlling a wind turbine, the wind turbine comprising a rotor and at least one blade being rotatable mounted to the rotor, the method comprising steps of:
detecting an amount of a bending moment of the blade;
providing a change element having an input and an output;
inputting the detected amount of the bending moment of the blade in the input of the change element;
outputting a response from the output of the change element; and
controlling the wind turbine using a response behaviour based on the output response, wherein the response behaviour is based directly on a derivative element that provides a phase lead over changes in rotor speed,
wherein the control device is configured to modify a speed control of the rotor by increasing a torque reference, a power reference and/or a pitch reference when the response is positive, and by decreasing the torque reference, the power reference and/or the pitch reference when the response is negative.