Invention Grant
- Patent Title: Method for dampening oscillations in a wind turbine
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Application No.: US14373022Application Date: 2013-01-28
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Publication No.: US09719493B2Publication Date: 2017-08-01
- Inventor: Isaac Pineda Amo
- Applicant: Alstom Renovables España, S.L.
- Applicant Address: FR Grenoble
- Assignee: ALSTOM Renewable Technologies
- Current Assignee: ALSTOM Renewable Technologies
- Current Assignee Address: FR Grenoble
- Agency: Dority & Manning, P.A.
- Priority: EP12382034 20120130
- International Application: PCT/EP2013/051569 WO 20130128
- International Announcement: WO2013/113656 WO 20130808
- Main IPC: F03D7/04
- IPC: F03D7/04 ; F03D7/02

Abstract:
A method is provided for dampening oscillations in a wind turbine, the wind turbine having a tower 1, a rotor 3 arranged on the tower 1 such as to be able to rotate about an X axis, and a plurality of blades 4 with adjustable pitch mounted on the rotor. The method includes monitoring the fore-aft oscillation of the tower 1 in the direction of the X axis, at the 2nd or a higher bending mode frequency; determining a compensating torque to be applied by the rotor 3 to the tower 1 of the wind turbine about a Y axis, which is horizontal and at right angles to the X axis, for at least partly dampening the oscillation at the 2nd or higher bending mode frequency; determining for each rotor blade 4 of the wind turbine an adjustment of the pitch angle suitable to generate the compensating torque about the Y axis; and adjusting the pitch angle β1, β2, β3 of at least one of the individual blades 4 to generate at least part of the compensating torque.
Public/Granted literature
- US20150003984A1 METHOD FOR DAMPENING OSCILLATIONS IN A WIND TURBINE Public/Granted day:2015-01-01
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