Control system for damping structural vibrations of a wind turbine system having multiple rotors

    公开(公告)号:US10273939B2

    公开(公告)日:2019-04-30

    申请号:US15550312

    申请日:2016-02-12

    Abstract: A wind turbine system comprising a plurality of wind turbines mounted to a support structure including a tower, wherein each of the plurality of wind turbines includes a rotor and a power generation system driven by the rotor, and at least one of a rotor blade pitch adjustment means and a generator power control means. The system further includes control means that receives vibration data associated with the support structure and which is configured to determine a damping control command for a respective one of the plurality of wind turbines, wherein the or each of the wind turbines includes a damping controller that receives a damping control command and which is operable to apply a damping control input to one or both of the blade pitch adjustment means and the generator power control means so as to counteract the measured vibration of the support structure. A benefit of the invention is that the operation of the multiple turbines of the system is used to reduce the effects of structural vibration by damping that vibration in an active manner.

    CONTROLLING NOISE EMISSIONS FROM INDIVIDUAL BLADES OF A WIND TURBINE

    公开(公告)号:US20220243700A1

    公开(公告)日:2022-08-04

    申请号:US17618555

    申请日:2020-06-17

    Abstract: The present invention provides a method and controller for controlling noise emissions from individual blades (18) of a wind turbine (10), the method (60) comprising defining (720) a wind turbine model (321) describing dynamics of the wind turbine (10), the wind turbine model (321) including a description of intensity and direction of noise emissions from each individual blade (18) as a function of azimuthal angle (312); and applying (730) a model-based control algorithm (32) using the wind turbine model (321) to determine at least one control output (331), and using (740) the at least one control output (331) to control noise emissions from each individual blade (18).

    A DETUNER SYSTEM
    3.
    发明申请

    公开(公告)号:US20220065223A1

    公开(公告)日:2022-03-03

    申请号:US17413682

    申请日:2019-12-17

    Abstract: A detuner system for a wind turbine includes a drive train component having a natural frequency. The drive train component is configured to rotate about an axis of rotation at a range of different speeds. The detuner system includes a controller for selectively interacting with the drive train component and cause a step change in the natural frequency of the drive train component at first threshold of the rotational speed range, and cause a step change in the natural frequency of the drive train component at a second threshold of the rotational speed range different to the first threshold.

    Wind turbine noise masking
    5.
    发明授权

    公开(公告)号:US11732691B2

    公开(公告)日:2023-08-22

    申请号:US17292820

    申请日:2019-11-13

    Inventor: Erik Sloth

    Abstract: A method of masking wind turbine noise from a wind turbine. Masking noise is generated to produce resultant noise with a modulation depth which is less than a modulation depth of the wind turbine noise and an average level which is greater than an average level of the wind turbine noise. The masking noise is either un-modulated masking noise with a substantially constant level, or amplitude-modulated masking noise which is phase-shifted relative to the wind turbine noise and has a modulation depth which is less than the modulation depth of the wind turbine noise.

    Detuner system
    6.
    发明授权

    公开(公告)号:US11725627B2

    公开(公告)日:2023-08-15

    申请号:US17413682

    申请日:2019-12-17

    Abstract: A detuner system for a wind turbine includes a drive train component having a natural frequency. The drive train component is configured to rotate about an axis of rotation at a range of different speeds. The detuner system includes a controller for selectively interacting with the drive train component and cause a step change in the natural frequency of the drive train component at a first threshold of the rotational speed range, and cause a step change in the natural frequency of the drive train component at a second threshold of the rotational speed range different to the first threshold.

    WIND TURBINE NOISE MASKING
    8.
    发明申请

    公开(公告)号:US20220025859A1

    公开(公告)日:2022-01-27

    申请号:US17292820

    申请日:2019-11-13

    Inventor: Erik Sloth

    Abstract: A method of masking wind turbine noise from a wind turbine Masking noise is generated to produce resultant noise with a modulation depth which is less than a modulation depth of the wind turbine noise and an average level which is greater than an average level of the wind turbine noise. The masking noise is either un-modulated masking noise with a substantially constant level, or amplitude-modulated masking noise which is phase-shifted relative to the wind turbine noise and has a modulation depth which is less than the modulation depth of the wind turbine noise.

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