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    OPTIMISATION OF POWER PRODUCTION IN A WIND TURBINE AT BELOW RATED POWER
    103.
    发明授权
    OPTIMISATION OF POWER PRODUCTION IN A WIND TURBINE AT BELOW RATED POWER 有权
    低电压下风电机组发电量的优化

    公开(公告)号：EP2798203B1

    公开(公告)日：2017-04-26

    申请号：EP12810045.0

    申请日：2012-12-13

    Applicant: Vestas Wind Systems A/S

    Inventor： ANDERSEN, Asger Svenning ,  THOMSEN, Jesper Sandberg ,  KRISTOFFERSEN, Jacob Krogh ,  OLESEN, Ib Svend ,  ROMBLAD, Jonas

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

    CPC classification number: F03D7/0256 ,  F03D7/0224 ,  F03D7/042 ,  F03D7/046 ,  F03D17/00 ,  Y02E10/723

    Abstract: The rotor blades of a wind turbine each have a plurality of fiber-optic pressure variation sensors which can detect the onset of a stall condition. The output of the stall condition sensors is input to a stall count circuit which increases a stall count signal each time a stall indication is received. The stall count signal is decayed exponentially over time and the current signal is summed with the decayed signal from a previous sampling period to form a value from which a stall margin is determined. An λ:θ curve of tip speed to wind speed ratio λ against pitch angle reference θ is then determined from the stall margin.

    Abstract translation: 风力涡轮机的转子叶片各自具有多个光纤压力变化传感器，其可以检测失速情况的发生。 失速状态传感器的输出被输入到失速计数电路，该失速计数电路在每次接收失速指示时增加失速计数信号。 失速计数信号随时间呈指数衰减，并且电流信号与来自先前采样周期的衰减信号相加以形成确定失速裕度的值。 λ：θ 叶尖速度与风速比λ对俯仰角基准θ的曲线; 然后由失速裕度确定。

    CONTROL METHOD FOR A WIND TURBINE
    104.
    发明公开
    CONTROL METHOD FOR A WIND TURBINE 有权
    控制方法用于风力涡轮机

    公开(公告)号：EP3047143A1

    公开(公告)日：2016-07-27

    申请号：EP14771503.1

    申请日：2014-09-16

    Applicant: Vestas Wind Systems A/S

    Inventor： BRATH, Per ,  KJÆR, Martin Ansbjerg ,  THOMSEN, Jesper Sandberg

    IPC: F03D7/02 ,  F03D7/04

    CPC classification number: F03D7/0224 ,  F03D1/0666 ,  F03D7/043 ,  F03D7/048 ,  F03D17/00 ,  Y02E10/721 ,  Y02E10/723

    Abstract: The invention relates to a method of controlling a wind turbine, the wind turbine comprising wind turbine blades attached to a rotor hub and a control system for pitching the blades relative to the hub. The method comprises providing wake sectors assigned to different wind directions and providing a normal pitch schedule to control an output parameter of the wind turbine (e.g. power, rotational speed), comprising pitch reference values as a function of the wind speed and at least one of the parameters of thrust coefficient C, and axial induction factor a. Further, is provided a modified pitch schedule to control a modified output parameter of the wind turbine, comprising pitch reference values in dependence of the wind speed and at least one modified parameter of the thrust coefficient and/or the axial induction factor. Upon receiving indications of a wind speed and a wind direction at the wind turbine is determined a pitch reference value for the wind turbine blades according to the normal pitch schedule if the wind direction falls outside the wake sector and otherwise according to the modified pitch schedule. The wind turbine is then controlled according to the pitch reference value. The invention further relates to a method of controlling the wind turbines in a wind park, wherein each wind turbine in the park is controlled locally according to the above mentioned control method.

    Control method for a wind turbine
    105.
    发明授权
    Control method for a wind turbine 有权
    Steuerverfahrenfüreine风力发电机

    公开(公告)号：EP2655875B1

    公开(公告)日：2015-11-18

    申请号：EP11799354.3

    申请日：2011-12-15

    Applicant: Vestas Wind Systems A/S

    Inventor： RISAGER, Lars ,  DALSGAARD, Søren ,  KRISTOFFERSEN, Jacob Krogh ,  THOMSEN, Jesper Sandberg ,  SØRENSEN, Søren ,  ANDERSEN, Asger Svenning

    IPC: F03D7/02 ,  F03D7/04

    CPC classification number: F03D7/0224 ,  F03D7/024 ,  F03D7/042 ,  F05B2270/326 ,  F05B2270/331 ,  Y02E10/723

    Abstract: A method of controlling a wind turbine comprising blades attached to a rotor hub for rotation in a rotor plane and a control system for individually pitching the blades relative to the hub. The method comprises dividing the rotor plane into a number of sectors, determining the individual sectors for each blade during the rotation by means of an azimuth angle sensor, and obtaining blade sensor data from a blade sensor on an individual blade relating to a sector, and comparing the obtained data with data relating to the same sector and representing blade sensor data on other blades. When an event is detected in a given sector, an individual pitch contribution is determined in the sector, and the blades are then pitched according to this individual pitch contribution for that given sector at least partly during passage of the sector.

    Abstract translation: 一种控制风力涡轮机的方法，包括附接到转子轮毂上的叶片以在转子平面中旋转，以及控制系统，用于相对于轮毂单独地调节叶片。 该方法包括将转子平面划分成多个扇区，通过方位角传感器确定旋转期间每个叶片的各个扇区，以及从与扇区相关的单个叶片上的叶片传感器获得叶片传感器数据，以及 将获得的数据与与相同扇区相关的数据进行比较，并在其他刀片上表示刀片传感器数据。 当在给定扇区中检测到事件时，在该扇区中确定单个俯仰贡献，并且然后至少部分地在扇区通过期间根据该给定扇区的这个单独俯仰贡献来调整叶片。

    METHODS AND SYSTEMS FOR WARNING A WIND TURBINE GENERATOR IN A WIND PARK OF AN EXTREME WIND EVENT
    106.
    发明公开
    METHODS AND SYSTEMS FOR WARNING A WIND TURBINE GENERATOR IN A WIND PARK OF AN EXTREME WIND EVENT 有权
    方法及系统风电场风力涡轮发电机在前面一个极端风事件的警告

    公开(公告)号：EP2788620A1

    公开(公告)日：2014-10-15

    申请号：EP12798144.7

    申请日：2012-12-04

    Applicant: Vestas Wind Systems A/S

    Inventor： KJÆR, Martin Ansbjerg ,  BRATH, Per ,  THOMSEN, Jesper Sandberg ,  DALSGAARD, Søren

    IPC: F03D7/04 ,  F03D9/00

    CPC classification number: F03D7/048 ,  F03D9/257 ,  F05B2270/321 ,  F05B2270/322 ,  Y02E10/723

    Abstract: A method is provided for warning a wind turbine generator (WTG) (100) in a wind park (200, 400, 1300) of an extreme wind event. According to one embodiment of the method, one or more WTGs are adaptively selected to operate as front line WTGs. The one or more front line WTGs detect extreme wind events and provide a warning (230) to other WTGs. The selection of front line WTGs is adaptive to changing wind conditions. In another embodiment, a wind park (200, 400, 1300) includes a group of one or more WTGs of a first type (220) located in an inner region of the wind park and a plurality of WTGs of a second type (210) located in an outer region of the wind park that at least partially surrounds the inner region. The first type of WTG (220) is structurally weaker and/or rated for higher performance than the second type of WTG (210).

    Abstract translation: 提供了一种用于极端风事件的风电场（200，400，1300）在警告的风力涡轮发电机（WTG）（100）的方法。 。根据该方法的一个实施例，一个或多个风力涡轮发电机被自适应地选择作为前线的WTG进行操作。 所述一个或多个风力涡轮发电机前线检测极端风事件和提供一个警告（230）到其他的WTG。 前线的WTG的选择是自适应变化的风力条件。 在另一个实施例的风力场（200，400，1300），包括一组位于所述风电场的帧内区域和第二类型的风电机组的多个第1类型（220）的一个或多个风力涡轮发电机（210） 位于在风电场确实至少部分地围绕所述内部区域的外部区域。 第一种类型的WTG（220）的在结构上较弱和/或额定比第二类型WTG（210）的更高的性能。

    CONTROL METHOD FOR A WIND TURBINE
    107.
    发明公开
    CONTROL METHOD FOR A WIND TURBINE 有权
    用于风力涡轮机控制方法

    公开(公告)号：EP2655875A2

    公开(公告)日：2013-10-30

    申请号：EP11799354.3

    申请日：2011-12-15

    Applicant: Vestas Wind Systems A/S

    Inventor： RISAGER, Lars ,  DALSGAARD, Søren ,  KRISTOFFERSEN, Jacob Krogh ,  THOMSEN, Jesper Sandberg ,  SØRENSEN, Søren ,  ANDERSEN, Asger Svenning

    IPC: F03D7/02

    CPC classification number: F03D7/0224 ,  F03D7/024 ,  F03D7/042 ,  F05B2270/326 ,  F05B2270/331 ,  Y02E10/723

    Abstract: A method of controlling a wind turbine comprising blades attached to a rotor hub for rotation in a rotor plane and a control system for individually pitching the blades relative to the hub. The method comprises dividing the rotor plane into a number of sectors, determining the individual sectors for each blade during the rotation by means of an azimuth angle sensor, and obtaining blade sensor data from a blade sensor on an individual blade relating to a sector, and comparing the obtained data with data relating to the same sector and representing blade sensor data on other blades. When an event is detected in a given sector, an individual pitch contribution is determined in the sector, and the blades are then pitched according to this individual pitch contribution for that given sector at least partly during passage of the sector.

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