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    SYSTEM AND METHOD TO MANAGE TORSIONAL OSCILLATION OF A WIND TURBINE TOWER
    11.
    发明申请
    SYSTEM AND METHOD TO MANAGE TORSIONAL OSCILLATION OF A WIND TURBINE TOWER 审中-公开

    公开(公告)号：US20200088165A1

    公开(公告)日：2020-03-19

    申请号：US16494643

    申请日：2018-03-20

    Applicant: VESTAS WIND SYSTEMS A/S

    Inventor： Thomas S. Bjertrup NIELSEN ,  Fabio CAPONETTI ,  Keld HAMMERUM

    IPC: F03D7/02 ,  F03D9/25

    Abstract: A wind turbine comprising a tower, a nacelle, a rotor including a plurality of blades, an electrical generator operatively coupled to the rotor, and a control system. The control system comprises: a sensing system operable to output a signal indicative of the torsional oscillation frequency of the nacelle; a torsional damping module configured to monitor the torsional oscillation signal and to determine one or more blade pitch command signals for damping the torsional oscillation of the tower, and a filter module configured to receive the one or more blade pitch command signals as inputs and to output a respective one or more modified blade pitch command signals, wherein the filter module is configured to filter the one or more blade pitch command input signals to exclude frequency components greater than the torsional oscillation frequency. Aspects of the invention also relate to a method, a computer program software product and a controller for implementing the method.

    FAST REACTING CONTROL SYSTEM FOR WIND TURBINE
    14.
    发明申请
    FAST REACTING CONTROL SYSTEM FOR WIND TURBINE 审中-公开

    公开(公告)号：US20180283354A1

    公开(公告)日：2018-10-04

    申请号：US15759150

    申请日：2016-09-27

    Applicant: VESTAS WIND SYSTEMS A/S

    Inventor： Keld HAMMERUM ,  Martin Ansbjerg KJÆR ,  Jesper Sandberg THOMSEN ,  Eik HERBSLEB ,  Tobias Gybel HOVGAARD

    IPC: F03D7/04

    Abstract: The present disclosure relates to a control system for a wind turbine comprising more controllers and where at least some of the controllers operate at different sample frequencies. The control system comprises at least two controller units, a first controller (10) for determining an operational value (OV) of a sub-system and a second controller (20) for the sub-system. The second controller operates at a higher sample frequency than the first controller. It is disclosed that a faster reaction to a received demand value (V1), received for controlling the sub-system, can be obtained by setting the operational value (OV) of the sub-system as the sum of an internal operational value (V5) and a difference value (V4).

    METHOD FOR CONTROLLING A WIND TURBINE DURING SAFETY OPERATION
    15.
    发明申请
    METHOD FOR CONTROLLING A WIND TURBINE DURING SAFETY OPERATION 审中-公开
    在安全操作期间控制风力涡轮机的方法

    公开(公告)号：US20160258416A1

    公开(公告)日：2016-09-08

    申请号：US14903550

    申请日：2014-06-26

    Applicant: VESTAS WIND SYSTEMS A/S

    Inventor： Keld HAMMERUM

    IPC: F03D7/02

    CPC classification number: F03D7/0264 ,  F03D7/0224 ,  F03D7/024 ,  F03D7/04 ,  Y02E10/723

    Abstract: A method for controlling a wind turbine during a safety operation is disclosed. A safety pitch control system is provided to pitch the blades individually at a number of pre-set approximately constant pitch rates including a first pitch rate and a second pitch rate lower than the first pitch rate. In response to a command for initiating the safety operation the blades are pitched towards a feathering position by the safety pitch control system including the blades being pitched according to a safety pitch strategy wherein for all the blades the pitch rate is changed between the first pitch rate and the second pitch rate according to a function of each blade azimuthal position. This is done such that each blade in turn is closer to the feathering position than the others.

    Abstract translation: 公开了一种在安全操作期间控制风力涡轮机的方法。 提供了一种安全俯仰控制系统，用于以包括第一俯仰速率和低于第一俯仰速率的第二俯仰速率的多个预设的近似恒定的俯仰速率单独俯仰叶片。 响应于启动安全操作的命令，叶片由安全俯仰控制系统朝向羽化位置倾斜，安全俯仰控制系统包括根据安全俯仰策略倾斜的叶片，其中对于所有桨叶，俯仰速率在第一俯仰速率 并且根据每个叶片方位位置的函数的第二俯仰速率。 这样做使得每个叶片依次比其他叶片更靠近羽化位置。

    METHOD AND SYSTEM FOR CONTROLLING A WIND TURBINE TO REDUCE NACELLE VIBRATION
    17.
    发明申请
    METHOD AND SYSTEM FOR CONTROLLING A WIND TURBINE TO REDUCE NACELLE VIBRATION 有权

    公开(公告)号：US20210207584A1

    公开(公告)日：2021-07-08

    申请号：US17056395

    申请日：2019-05-08

    Applicant: VESTAS WIND SYSTEMS A/S

    Inventor： Keld HAMMERUM ,  Jesper Sandberg THOMSEN

    IPC: F03D7/02 ,  F03D7/04

    Abstract: This invention relates to obtaining a movement signal indicative of a vibrational movement of a tower. An actuator signal is then determined based on the movement signal, the actuator signal being determined to produce a desired force to counteract the vibrational movement of the tower. A pitch reference offset signal for each one of a plurality of pitch-adjustable rotor blades is then determined based on the actuator signal. An integration is then applied to the pitch reference offset signals to determine modified pitch reference offset signals based on the integrated pitch reference offset signals. A pitch signal for each of the blades is the determined based on the modified pitch reference offset signals, the pitch signals being arranged to adjust the the blades to provide the force that counteracts the vibrational movement of the tower.

    CONTROL OF A WIND TURBINE TAKING FATIGUE MEASURE INTO ACCOUNT
    19.
    发明申请
    CONTROL OF A WIND TURBINE TAKING FATIGUE MEASURE INTO ACCOUNT 审中-公开

    公开(公告)号：US20180142674A1

    公开(公告)日：2018-05-24

    申请号：US15574456

    申请日：2016-05-24

    Applicant: VESTAS WIND SYSTEMS A/S

    Inventor： Keld HAMMERUM ,  Tobias Gybel HOVGAARD

    IPC: F03D7/02 ,  F03D7/04

    Abstract: The present invention relates to control of wind turbines where a fatigue load measure is taken into account. Control of a wind turbine is described where a control trajectory is calculated based on a fatigue load measure, the fatigue load measure being determined from a predicted operational trajectory. In embodiments the predicted operational trajectories are calculated by using a model predictive control (MPC) routine, and the fatigue load measure includes a rainflow count algorithm.

    METHODS AND SYSTEMS FOR DETECTING SENSOR FAULT MODES
    20.
    发明申请
    METHODS AND SYSTEMS FOR DETECTING SENSOR FAULT MODES 审中-公开
    用于检测传感器故障模式的方法和系统

    公开(公告)号：US20170009739A1

    公开(公告)日：2017-01-12

    申请号：US15269839

    申请日：2016-09-19

    Applicant: VESTAS WIND SYSTEMS A/S

    Inventor： Fabio CAPONETTI ,  Per BRATH ,  Keld HAMMERUM ,  Johnny NIELSEN

    IPC: F03D7/04 ,  F03D17/00 ,  F03D7/02 ,  G05B15/02

    CPC classification number: F03D7/042 ,  F03D7/0224 ,  F03D17/00 ,  F03G7/00 ,  G05B15/02

    Abstract: A method of detecting a fault mode of a sensor is provided. The sensor may be, for example, a bending moment sensor and may sense a bending moment of a blade on a wind turbine generator (WTG). The method includes comparing data output by a first sensor with reference data indicating what is expected to be output by the first sensor to produce a first comparison result and comparing data output by the first sensor with data output by a second sensor to produce a second comparison result. A determination of whether the first sensor has entered a fault mode is made based at least in part on the first and second comparison results.

    Abstract translation: 提供一种检测传感器故障模式的方法。 传感器可以是例如弯矩传感器并且可以感测风力涡轮发电机（WTG）上的叶片的弯矩。 该方法包括将由第一传感器输出的数据与由第一传感器预期输出的参考数据进行比较以产生第一比较结果，并将由第一传感器输出的数据与由第二传感器输出的数据进行比较以产生第二比较 结果。 至少部分地基于第一和第二比较结果确定第一传感器是否已经进入故障模式。

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