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    Determining icing condition using mechanical wind sensor
    4.
    发明授权
    Determining icing condition using mechanical wind sensor 有权

    公开(公告)号：US11384738B2

    公开(公告)日：2022-07-12

    申请号：US16957096

    申请日：2018-12-11

    Applicant: VESTAS WIND SYSTEMS A/S

    Inventor： Johnny Nielsen ,  Jacob Deleuran Grunnet

    IPC: F03D80/40 ,  F03D17/00

    Abstract: Embodiments herein describe a method and associated controller for a wind turbine. The method comprises determining one or more characteristics of a sensor signal received from a mechanical sensor of the wind turbine; determining, based on the one or more characteristics of the sensor signal, an icing condition of the wind turbine; and controlling operation of one or more wind turbine systems based on the determined icing condition.

    Determining wind direction offset using yaw events
    5.
    发明授权
    Determining wind direction offset using yaw events 有权

    公开(公告)号：US11078884B2

    公开(公告)日：2021-08-03

    申请号：US16314000

    申请日：2017-06-29

    Applicant: VESTAS WIND SYSTEMS A/S

    Inventor： Johnny Nielsen

    IPC: F03D7/02 ,  F03D17/00

    Abstract: A wind turbine includes a wind direction sensor, a yawing system, and a control system for yawing the wind turbine rotor relative to the wind. The control system measures a wind direction parameter by the wind direction sensor Over time a group of data sets is obtained and a wind direction offset is determined from the group of data sets which is used to adjust the wind direction parameter. The adjusted wind direction parameter is then used in the controlling of the wind turbine.

    Identifying recurrent free-flow wind disturbances associated with a wind turbine
    7.
    发明授权
    Identifying recurrent free-flow wind disturbances associated with a wind turbine 有权

    公开(公告)号：US12247547B2

    公开(公告)日：2025-03-11

    申请号：US18686367

    申请日：2022-08-25

    Applicant: VESTAS WIND SYSTEMS A/S

    Inventor： Goncalo Artur Duarte Pereira ,  Jens Van Schelve ,  Johnny Nielsen

    IPC: F03D17/00

    Abstract: The invention provides a method of identifying recurrent free-flow wind disturbances associated with a wind turbine. The method comprises monitoring a signal indicative of a parameter associated with operation of the wind turbine, determining an expected signal of the parameter based on the monitored signal, determining a difference between values of the monitored signal and the determined expected signal, and correlating the determined differences with yaw position of a nacelle of the wind turbine. The method includes determining, based on the correlated differences, unexpected values of the parameter for different yaw positions, and identifying, based on a frequency of occurrence of the determined unexpected values, a recurrent free-flow wind disturbance associated with a yaw position of the nacelle.

    Correcting pitch angle
    8.
    发明授权
    Correcting pitch angle 有权

    公开(公告)号：US12228107B2

    公开(公告)日：2025-02-18

    申请号：US17417082

    申请日：2019-12-03

    Applicant: VESTAS WIND SYSTEMS A/S

    Inventor： Johnny Nielsen ,  Jens Van Schelve ,  Goncalo Lucas Marcos ,  Dan Hilton ,  Kristian Kiib

    IPC: F03D7/02

    Abstract: A method of correcting a pitch angle deviation of a blade of a wind turbine is provided. First blade load measurements measured when the wind turbine was operating in a first operational mode are provided, and used to determine calibration parameters. Second blade load measurements measured when the wind turbine was operating in a second operational mode are provided, and the calibration parameters applied to determine calibrated blade load measurements. A pitch angle deviation of at least one blade of the turbine is estimated based on an identified difference between the calibrated blade load measurements, and a pitch angle is adjusted to correct for the pitch angle deviation.

    Method for operating a cluster of wind turbines
    10.
    发明授权
    Method for operating a cluster of wind turbines 有权

    公开(公告)号：US11952985B2

    公开(公告)日：2024-04-09

    申请号：US18326978

    申请日：2023-05-31

    Applicant: VESTAS WIND SYSTEMS A/S

    Inventor： Pradeep Bosukonda ,  Johnny Nielsen ,  Tobias Rossel

    IPC: F03D80/40 ,  F03D7/02 ,  F03D7/04 ,  F03D17/00

    CPC classification number: F03D80/40 ,  F03D7/0264 ,  F03D7/048 ,  F03D17/00 ,  F05B2260/80 ,  F05B2270/20

    Abstract: A method for operating a cluster of a plurality of wind turbines is disclosed. For each of the wind turbines, one or more parameter values of a parameter being indicative for a condition occurring at the wind turbine are derived, based the measurements obtained by the wind turbine. In the case that a derived parameter value for a specific wind turbine exceeds a trigger value, measures for mitigating an effect of the condition at the specific wind turbine are initiated. The derived parameter values for the wind turbines of the cluster of wind turbines are compared to an expected distribution of the parameter values. In the case that a distribution of the derived parameter values differs from the expected distribution of the parameter values, the trigger value is adjusted, and the adjusted trigger value is subsequently applied when comparing the derived parameter values to the trigger value.

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