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    INDIVIDUAL PITCH CONTROL WITH UNAVAILABLE BLADE LOAD SENSOR
    2.
    发明申请
    INDIVIDUAL PITCH CONTROL WITH UNAVAILABLE BLADE LOAD SENSOR 审中-公开

    公开(公告)号：WO2022242816A1

    公开(公告)日：2022-11-24

    申请号：PCT/DK2022/050100

    申请日：2022-05-16

    Applicant: VESTAS WIND SYSTEMS A/S

    Inventor： GILES, Alexander Duncan ,  THOMSEN, Jesper Sandberg ,  VIOLATO, Gustavo Oliveira

    IPC: F03D7/02

    Abstract: The present invention relates to pitch actuation of pitch-adjustable rotor blades of a three-bladed wind turbine in a situation where one blade load sensor is unavailable. Based on blade load signals (L1, L2, L3) and an availability signal (v1, v2, v3) for each of the blade load signals, combined load signals are constructed based on the available blade load signals. The combined load signals are determined based on application of a high pass filter to the blade load signals and a transform (T1) of the blade load signals to an intermediate coordinate frame, wherein, in the transform, the unavailable blade load signal is replaced with an estimated signal. A control action (CA) is performed using the combined load signals, and the resulting pitch modification signals (Δθ1, Δθ2, Δθ3) are applied to the pitch actuator.

    WHIRLING MODE CONTROL OF A WIND TURBINE BASED ON TOWER MEASUREMENTS
    3.
    发明申请
    WHIRLING MODE CONTROL OF A WIND TURBINE BASED ON TOWER MEASUREMENTS 审中-公开

    公开(公告)号：WO2023072355A1

    公开(公告)日：2023-05-04

    申请号：PCT/DK2022/050223

    申请日：2022-10-28

    Applicant: VESTAS WIND SYSTEMS A/S

    Inventor： GILES, Alexander Duncan ,  THOMSEN, Jesper Sandberg

    IPC: F03D7/02 ,  F03D7/0224 ,  F03D7/0296 ,  F05B2270/334

    Abstract: The invention relates to adjusting pitch of rotor blades of a wind turbine. An acceleration signal is received from a wind turbine acceleration sensor and is indicative of side-to-side motion of the wind turbine tower. A first component in a fixed coordinate frame of the wind turbine is determined based on the received acceleration signal. The first component is indicative of a whirling mode of the wind turbine caused by edgewise vibrations of the rotor blades. A second component is generated based on the first component and is orthogonal to the first component. A control action is applied to obtain first and second control components for mitigating the whirling mode. An inverse m-blade coordinate transformation is applied to the first and second control components to obtain pitch reference offset values in a rotor coordinate frame of the wind turbine, which are used to adjust pitch of the rotor blades.

    REDUCTION OF EDGEWISE VIBRATIONS USING BLADE LOAD SIGNAL
    4.
    发明申请
    REDUCTION OF EDGEWISE VIBRATIONS USING BLADE LOAD SIGNAL 审中-公开

    公开(公告)号：WO2022148516A1

    公开(公告)日：2022-07-14

    申请号：PCT/DK2022/050002

    申请日：2022-01-03

    Applicant: VESTAS WIND SYSTEMS A/S

    Inventor： GILES, Alexander Duncan ,  THOMSEN, Jesper Sandberg ,  VIOLATO, Gustavo Oliveira

    IPC: F03D7/02

    Abstract: The present invention relates to control of a wind turbine to reduce structural loading due to vibrations of the blades along the edgewise direction. A rotor control system for actuating pitch of pitch-adjustable rotor blades of a wind turbine is disclosed. Pitch modification signals are determined based on edgewise load signals for each of the rotor blades. The edgewise load signal are coordinated transformed and input into a primary whirling controller unit to provide whirling signal components which can be used for determining the pitch modification signals.

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