US 11,913,431 B2
Wind turbine oscillation detection
David Steele, Skanderborg (DK); and Kristian Kiib, Skødstrup (DK)
Assigned to VESTAS WIND SYSTEMS A/S, Aarhus N (DK)
Appl. No. 17/791,157
Filed by VESTAS WIND SYSTEMS A/S, Aarhus N. (DK)
PCT Filed Jan. 5, 2021, PCT No. PCT/DK2021/050003
§ 371(c)(1), (2) Date Jul. 6, 2022,
PCT Pub. No. WO2021/139863, PCT Pub. Date Jul. 15, 2021.
Claims priority of application No. PA 2020 70004 (DK), filed on Jan. 6, 2020.
Prior Publication US 2023/0021757 A1, Jan. 26, 2023
Int. Cl. F03D 7/04 (2006.01); F03D 1/02 (2006.01); F03D 7/02 (2006.01)
CPC F03D 7/047 (2013.01) [F03D 1/02 (2013.01); F03D 7/0276 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A wind turbine comprising:
a tower;
a first arm extending from the tower;
a first rotor-nacelle assembly disposed on the first arm;
a first movement sensor disposed on the first arm or on the first rotor-nacelle assembly and arranged to generate first movement data based on movement of the first arm or of the first rotor-nacelle assembly;
a second arm extending from the tower;
a second rotor-nacelle assembly disposed on the second arm;
a second movement sensor disposed on the second arm or on the second rotor-nacelle assembly and arranged to generate second movement data based on movement of the second arm or of the second rotor-nacelle assembly; and
a control system coupled to the first and the second movement sensors and arranged to receive and to process the first and second movement data,
wherein the control system comprises a time synchronous network and the first and second movement sensors are configured to be time synchronous with at least one of each other or the control system, and
wherein the control system is arranged to calculate latency within the time synchronous network to make adjustments for time differences of the first and second movement data received to determine an oscillation characteristic of the wind turbine from the first and the second movement data.