# US 2025/0146471 A1 · Controlling amount of active damping to be applied during operation of a wind turbine > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2025/0146471 A1 - Document ID: US20250146471A1 - Status: Published application - Kind: A1 - Application number: 18/832,819 - Filed: 2023-01-09 - Published: 2025-05-08 - Earliest claimed: 2022-02-01 - Assignees: Siemens Gamesa Renewable Energy A/S - Applicants: Siemens Gamesa Renewable Energy A/S - Inventors: Johannes Gerhardes Wardjan Alberts; Safak Burak Altun - Web page: https://patentgrep.com/patent/US20250146471A1 ## CPC - F03D 7/0296: {to prevent, counteract or reduce noise emissions} - F03D 7/048: {controlling wind farms} - F03D 7/02: the wind motors having rotation axis substantially parallel to the air flow entering the rotor - F03D 7/0284: {in relation to the state of the electric grid} - F03D 7/042: {by means of an electrical or electronic controller} - F03D 7/046: {with learning or adaptive control, e.g. self-tuning, fuzzy logic or neural network} - Y02E 10/72: Wind turbines with rotation axis in wind direction - F03D: WIND MOTORS - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract A method is provided of controlling an amount of active damping to be applied by an active damping system during operation of a wind turbine, the method including (a) receiving a power reference signal indicative of the power to be produced by the wind turbine, (b) determining a relative power reference change indicative of a change in the power reference signal, (c) determining the amount of active damping to be applied based on the relative power reference change, and (d) outputting the determined amount of active damping to the active damping system. Furthermore, a corresponding device, a wind turbine including such a device, a wind park including such wind turbines, and a computer program product are provided. ## Claims ### Claim 1 A method of controlling an amount of active damping to be applied by an active damping system to dampen oscillating movements in structural components of a wind turbine during operation of the wind turbine, the method comprising: receiving a power reference signal indicative of a power to be produced by the wind turbine; determining a relative power reference change indicative of a change in the power reference signal; determining the amount of active damping to be applied based on the relative power reference change; and outputting the amount of active damping to the active damping system. ### Claim 2 (depends on 1) The method according to claim 1, wherein determining the relative power reference change comprises: determining a current power reference value based on the power reference signal; determining a steady-state power reference value based on the power reference signal; and calculating the relative power reference change based on an absolute difference between the current power reference value and the steady-state power reference value. ### Claim 3 (depends on 2) The method according to claim 2, wherein calculating the relative power reference change further comprises dividing the absolute difference between the current power reference value and the steady-state power reference value with a nominal power value of the wind turbine. ### Claim 4 (depends on 2) The method according to claim 2, wherein determining the current power reference value comprises filtering the power reference signal with a first low-pass filter having a first time constant. ### Claim 5 (depends on 4) The method according to claim 4, wherein determining the steady-state power reference value comprises filtering the power reference signal with a second low-pass filter having a second time constant. ### Claim 6 (depends on 5) The method according to claim 5, wherein the second time constant is between 25 and 75 times the first time constant. ### Claim 7 (depends on 1) The method according to claim 1, wherein determining the amount of active damping comprises: if the relative power reference change exceeds a predetermined threshold value: calculating the amount of active damping based on a difference between the relative power reference change and the predetermined threshold value, or if the relative power reference change does not exceed the predetermined threshold value: setting the amount of active damping to a value corresponding to a nominal amount of active damping. ### Claim 8 (depends on 1) The method according to claim 1, wherein determining the amount of active damping comprises linear interpolation and/or a look-up table mapping the amount of active damping to relative power reference change, and/or wherein the amount of active damping is determined as a percentage of a nominal amount of active damping. ### Claim 9 (depends on 1) The method according to claim 1, wherein the determined amount of active damping to be applied is inversely related to the relative power reference change. ### Claim 10 A device for controlling an amount of active damping to be applied by an active damping system to dampen oscillating movements in structural components of a wind turbine during operation of the wind turbine, the device comprising: an input for receiving a power reference signal indicative of a power to be produced by the wind turbine; processing circuitry configured to: determine a relative power reference change indicative of a change in the power reference signal, and determine the amount of active damping to be applied based on the relative power reference change; and an output for outputting the determined amount of active damping to the active damping system. ### Claim 11 (depends on 10) The device according to claim 10, wherein the processing circuitry comprises; a first unit configured to determine a current power reference value based on the power reference signal; a second unit configured to determine a steady-state power reference value based on the power reference signal; and a calculating unit configured to calculate the relative power reference change based on an absolute difference between the current power reference value and the steady-state power reference value. ### Claim 12 (depends on 11) The device according to claim 11, wherein the first unit comprises a first low-pass filter having a first time constant and being configured to determine the current power reference value by filtering the power reference signal; wherein the second unit comprises a second low-pass filter having a second time constant and being configured to determine the steady-state power reference value by filtering the power reference signal; and wherein the second time constant is larger than the first time constant. ### Claim 13 (depends on 10) A wind turbine comprising: an active damping system configured to modify one or more reference values received at the wind turbine to dampen oscillating movements in structural components of the wind turbine; and a device according to claim 10 configured to control the amount of active damping applied by the active damping system during operation of the wind turbine. ### Claim 14 (depends on 13) A wind park comprising a plurality of wind turbines according to claim 13. ### Claim 15 (depends on 1) A computer program product comprising a computer readable hardware storage device having computer readable program code stored therein, the program code executable by a processor of a computer system to implement a method according to claim 1. ### Claim 16 (depends on 4) The method according to claim 4, wherein the first time constant is around 1 second. ### Claim 17 (depends on 5) The method according to claim 5, wherein the second time constant is between 25 seconds and 75 seconds. ### Claim 18 (depends on 12) The device according to claim 12, wherein the second time constant is between 25 and 75 times larger than the first time constant.