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    WIND TURBINE OSCILLATION DETECTION
    1.
    发明申请
    WIND TURBINE OSCILLATION DETECTION 审中-公开

    公开(公告)号：WO2021139863A1

    公开(公告)日：2021-07-15

    申请号：PCT/DK2021/050003

    申请日：2021-01-05

    Applicant: VESTAS WIND SYSTEMS A/S

    Inventor： STEELE, David ,  KIIB, Kristian

    IPC: F03D1/02 ,  F03D7/02 ,  F03D7/04 ,  F03D7/0296 ,  F03D7/047

    Abstract: 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 is arranged to determine an oscillation characteristic of the wind turbine from the first and the second movement data.

    CORRECTING PITCH ANGLE
    2.
    发明申请
    CORRECTING PITCH ANGLE 审中-公开

    公开(公告)号：WO2020125885A1

    公开(公告)日：2020-06-25

    申请号：PCT/DK2019/050377

    申请日：2019-12-03

    Applicant: VESTAS WIND SYSTEMS A/S

    Inventor： NIELSEN, Johnny ,  VAN SCHELVE, Jens ,  MARCOS, Goncalo Lucas ,  HILTON, Dan ,  KIIB, Kristian

    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.

    IMPROVEMENTS RELATING TO WIND TURBINE ROTOR ANGLE SENSING SYSTEMS
    3.
    发明申请
    IMPROVEMENTS RELATING TO WIND TURBINE ROTOR ANGLE SENSING SYSTEMS 审中-公开

    公开(公告)号：WO2018215042A1

    公开(公告)日：2018-11-29

    申请号：PCT/DK2018/050118

    申请日：2018-05-25

    Applicant: VESTAS WIND SYSTEMS A/S

    Inventor： CAPONETTI, Fabio ,  KIIB, Kristian ,  HILTON, Dan

    IPC: F03D17/00

    Abstract: This application describes a method of detecting an error in a rotor angle sensing system of a wind turbine, where the wind turbine comprises a rotor including a plurality of wind turbine blades, a blade load sensor associated with a respective one of the wind turbine blades, and a rotor angle sensing system configured to output a rotor angle signal. The blade load sensor is configured to output a measured blade load signal. The method comprises generating an estimated blade load signal based on at least the rotor angle signal; comparing the estimated blade load signal with the measured blade load signal to determine a phase difference between them; and identifying an error if the phase difference between the estimated blade load signal and the measured blade load signal exceeds a predetermined threshold.

    DETERMINING TOWER TOP ACCELERATION OF A WIND TURBINE
    4.
    发明申请
    DETERMINING TOWER TOP ACCELERATION OF A WIND TURBINE 审中-公开

    公开(公告)号：WO2022258121A1

    公开(公告)日：2022-12-15

    申请号：PCT/DK2022/050119

    申请日：2022-06-03

    Applicant: VESTAS WIND SYSTEMS A/S

    Inventor： KIIB, Kristian ,  SOWMAN, Jon

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

    Abstract: The invention provides a method of determining tower top acceleration of a wind turbine. The method includes receiving acceleration data from a plurality of acceleration sensors positioned in a nacelle of the wind turbine, including data indicative of a measured acceleration in a direction along at least one measurement axis of each respective acceleration sensor at a current time step. The method includes determining a predicted tower top acceleration of the wind turbine tower at the current time step, the predicted tower top acceleration being determined in dependence on a kinematic model of the wind turbine, and on a determined estimation of tower top acceleration at a previous time step. The method includes determining an estimated tower top acceleration of the wind turbine tower at the current time step by updating the predicted tower top acceleration based on the measured acceleration from each of the acceleration sensors.

    DETERMINING WIND TURBINE ROTOR SPEED
    5.
    发明申请
    DETERMINING WIND TURBINE ROTOR SPEED 审中-公开

    公开(公告)号：WO2022228630A1

    公开(公告)日：2022-11-03

    申请号：PCT/DK2022/050084

    申请日：2022-04-26

    Applicant: VESTAS WIND SYSTEMS A/S

    Inventor： KIIB, Kristian ,  NIELSEN, Johnny

    IPC: G01P3/48 ,  G01P21/02 ,  F03D7/02 ,  F03D17/00

    Abstract: The invention relates to determining rotor speed of a wind turbine The invention involves receiving angular velocity sensor data indicative of an angular velocity of the wind turbine rotor hub, provided e.g. by a gyroscope, and receiving acceleration sensor data indicative of an acceleration of the rotor hub in at least one radial direction relative to an axis of rotation of the rotor hub. The invention involves determining first and second estimated rotational speeds of the rotor hub based on the respective angular velocity sensor data and acceleration sensor data. The invention involves determining a correction value based on a difference between the first and second estimated rotational speeds, and applying the correction value to the first estimated rotational speed to determine the true current rotor speed of the wind turbine.

    IMPROVEMENTS RELATING TO A YAW SENSOR FOR A WIND TURBINE
    6.
    发明申请
    IMPROVEMENTS RELATING TO A YAW SENSOR FOR A WIND TURBINE 审中-公开
    风力机叶轮传感器的改进

    公开(公告)号：WO2017137051A1

    公开(公告)日：2017-08-17

    申请号：PCT/DK2017/050036

    申请日：2017-02-10

    Applicant: VESTAS WIND SYSTEMS A/S

    Inventor： GLAVIND, Lars ,  OLESEN, Ib Svend ,  THØGERSEN, Morten ,  KIIB, Kristian ,  NIELSEN, Johnny

    IPC: F03D7/02 ,  F03D17/00

    CPC classification number: F03D7/0204 ,  F03D7/0264 ,  F05B2260/845 ,  F05B2270/329 ,  F05B2270/809 ,  Y02E10/723

    Abstract: A yaw sensor for a wind turbine is described. The yaw sensor comprises a plurality of rotary switches, each configured to be coupled to a yaw drive gearbox of a wind turbine nacelle, the rotary switches each being operable to activate and deactivate respective associated electrical contacts in dependence on an amount of yaw rotation of the nacelle relative to a start position. Each electrical contact is active at a plurality of first yaw rotation ranges with respect to the start position, and inactive at a plurality of second yaw rotation ranges with respect to the start position, the first and second yaw rotation ranges being interleaved. The first yaw rotation ranges of the electrical contacts do not overlap each other between the start position and a first rotational position in a first rotational direction from the start position, and do not overlap each other between the start position and a second rotational position in a second rotational direction from the start position opposite to the first rotational direction. All of the electrical contacts are activated at the first rotational position and the second rotational position. The electrical contacts each generate a respective electrical signal when active. The activation of one or more of the electrical contacts between the first and second rotational positions confirms that the rotary switches are operating correctly, reducing the requirement for regular safety checks, and permitting yaw sensor supervision to be conducted by comparing pulses generated by the electrical contacts with the output of an angular encoder.

    Abstract translation: 描述了用于风力涡轮机的偏航传感器。 偏航传感器包括多个旋转开关，每个旋转开关被配置为耦合到风力涡轮机机舱的偏航驱动齿轮箱，每个旋转开关可操作以根据 机舱相对于起始位置。 每个电触点在相对于起始位置的多个第一偏转旋转范围处起作用，并且在相对于起始位置的多个第二偏航旋转范围处不起作用，第一和第二偏转旋转范围被交错。 电触头的第一偏转旋转范围在起始位置和第一旋转位置之间在从起始位置起的第一旋转方向上彼此不重叠，并且在起始位置和第二旋转位置之间彼此不重叠 第二旋转方向从与第一旋转方向相反的起始位置开始。 所有电触点在第一旋转位置和第二旋转位置被激活。 电触点各自在激活时产生相应的电信号。 在第一和第二旋转位置之间的一个或多个电触点的激活确认了旋转开关正确地工作，减少了对常规安全检查的要求，并且允许通过比较由电触点产生的脉冲来进行偏航传感器监视 与角度编码器的输出。

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