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    Wind turbine system for detection of blade icing
    1.
    发明授权
    Wind turbine system for detection of blade icing 有权
    用于检测叶片结冰的风力涡轮机系统

    公开(公告)号：US09567869B2

    公开(公告)日：2017-02-14

    申请号：US13807465

    申请日：2011-06-29

    Applicant: Steen M. Lauritsen ,  Erik Carl Lehnskov Miranda

    Inventor： Steen M. Lauritsen ,  Erik Carl Lehnskov Miranda

    IPC: F01D25/00 ,  F03D80/40 ,  F03D7/04

    CPC classification number: F01D25/00 ,  F03D7/042 ,  F03D80/40 ,  F05B2260/80 ,  F05B2260/96 ,  F05B2270/334 ,  F05B2270/807 ,  F05B2270/808 ,  Y02E10/722 ,  Y02E10/723

    Abstract: The invention relates to a method for detecting icing and other loadings on blades of wind turbines. Advantageously, the method utilizes existing wind turbine actuators, for example pitch actuators, far excitation of blade vibrations. Vibration sensors on the blade such as strain sensors or accelerometers measure the blade vibrations excited in response to the actively excised vibrations. By comparing the measured response with previously obtained reference responses, it is possible to determine if blade icing is present.

    Abstract translation: 本发明涉及一种用于检测风力涡轮机叶片上的结冰和其他负载的方法。 有利地，该方法利用现有的风力涡轮机致动器，例如桨距致动器，叶片振动的远激发。 叶片上的振动传感器，例如应变传感器或加速度计，测量响应于主动切除的振动而激发的叶片振动。 通过将测量的响应与先前获得的参考响应进行比较，可以确定叶片结冰是否存在。

    METHOD OF CONTROLLING A VARIABLE SPEED WIND TURBINE
    2.
    发明申请
    METHOD OF CONTROLLING A VARIABLE SPEED WIND TURBINE 有权
    控制变速风力涡轮机的方法

    公开(公告)号：US20110140433A1

    公开(公告)日：2011-06-16

    申请号：US13003773

    申请日：2009-07-07

    Applicant: Erik Carl Lehnskov Miranda

    Inventor： Erik Carl Lehnskov Miranda

    IPC: H02P9/04

    CPC classification number: H02P9/007 ,  F03D7/0276 ,  F03D7/028 ,  F03D7/044 ,  F05B2220/70646 ,  F05B2270/335 ,  H02P27/05 ,  H02P2101/15 ,  Y02E10/723 ,  Y02E10/725

    Abstract: in a method of controlling a variable speed wind turbine, said wind turbine comprising a double-fed asynchronous generator having rotor windings and stator windings and means for controlling the wind turbine speed, the method comprises the following steps:—measuring or calculating, based on measured parameters, the active electrical power (Pr) in the rotor windings, comparing the active electrical power (Pr) in the rotor windings with a preset limit (PrLimit), when the active electrical power (Pr) in the rotor windings exceeds the preset limit (PrLimit), controlling the wind turbine speed to minimize the difference between the active electrical power (Pr) in the rotor windings and a preset reference (PrRef). The rotor power (Pr) is kept at a reduced level, thus avoiding overload of wind turbine generator components.

    Abstract translation: 在控制变速风力涡轮机的方法中，所述风力涡轮机包括具有转子绕组和定子绕组的双馈异步发电机和用于控制风力涡轮机转速的装置，该方法包括以下步骤： - 基于 测量参数，转子绕组中的有功电功率（Pr），将转子绕组中的有功功率（Pr）与预设极限（PrLimit）进行比较，当转子绕组中的有功功率（Pr）超过预设值 限制（PrLimit），控制风力涡轮机的速度以最小化转子绕组中的有功功率（Pr）与预设参考值（PrRef）之间的差异。 转子功率（Pr）保持在降低的水平，从而避免风力发电机组件过载。

    Method of controlling a variable speed wind turbine
    4.
    发明授权
    Method of controlling a variable speed wind turbine 有权
    控制变速风力发电机的方法

    公开(公告)号：US08624422B2

    公开(公告)日：2014-01-07

    申请号：US13003773

    申请日：2009-07-07

    Applicant: Erik Carl Lehnskov Miranda

    Inventor： Erik Carl Lehnskov Miranda

    IPC: F03D9/00 ,  H02P9/04

    CPC classification number: H02P9/007 ,  F03D7/0276 ,  F03D7/028 ,  F03D7/044 ,  F05B2220/70646 ,  F05B2270/335 ,  H02P27/05 ,  H02P2101/15 ,  Y02E10/723 ,  Y02E10/725

    Abstract: in a method of controlling a variable speed wind turbine, said wind turbine comprising a double-fed asynchronous generator having rotor windings and stator windings and means for controlling the wind turbine speed, the method comprises the following steps:—measuring or calculating, based on measured parameters, the active electrical power (Pr) in the rotor windings, comparing the active electrical power (Pr) in the rotor windings with a preset limit (PrLimit), when the active electrical power (Pr) in the rotor windings exceeds the preset limit (PrLimit), controlling the wind turbine speed to minimize the difference between the active electrical power (Pr) in the rotor windings and a preset reference (PrRef). The rotor power (Pr) is kept at a reduced level, thus avoiding overload of wind turbine generator components.

    Abstract translation: 在控制变速风力涡轮机的方法中，所述风力涡轮机包括具有转子绕组和定子绕组的双馈异步发电机和用于控制风力涡轮机转速的装置，该方法包括以下步骤： - 基于 测量参数，转子绕组中的有功电功率（Pr），将转子绕组中的有功功率（Pr）与预设极限（PrLimit）进行比较，当转子绕组中的有功功率（Pr）超过预设值 限制（PrLimit），控制风力涡轮机的速度以最小化转子绕组中的有功功率（Pr）与预设参考值（PrRef）之间的差异。 转子功率（Pr）保持在降低的水平，从而避免风力发电机组件过载。

    PITCH CONTROL SYSTEM
    5.
    发明申请
    PITCH CONTROL SYSTEM 审中-公开
    PITCH控制系统

    公开(公告)号：US20110158805A1

    公开(公告)日：2011-06-30

    申请号：US13060983

    申请日：2009-08-26

    Applicant: Erik Carl Lehnskov Miranda ,  Ole Mølgaard Jeppesen ,  Steen Morten Lauritsen

    Inventor： Erik Carl Lehnskov Miranda ,  Ole Mølgaard Jeppesen ,  Steen Morten Lauritsen

    IPC: F03D7/00

    CPC classification number: F03D7/024 ,  F03D7/0224 ,  F03D17/00 ,  F05B2240/50 ,  F05B2260/83 ,  F05B2270/107 ,  F05B2270/309 ,  F05B2270/328 ,  Y02E10/723

    Abstract: The present invention relates to a pitch control system for operating the blade pitch of the rotor blades of a wind turbine generator. A method is disclosed wherein a command signal or pitch demand is applied to the blade pitch system of the rotor blades and the resulting response signal or pitch response is received. The received pitch response is compared to a reference and a signal indicative of a pitch system fault may be generated if a difference between the response signal and the reference is detected as being larger than a preset criterion. The deviating behaviour of a blade pitch system can thereby be detected which enables a testing or monitoring of the condition of the pitch system of the rotor blades of a wind turbine generator.

    Abstract translation: 本发明涉及一种用于操作风力涡轮发电机的转子叶片的叶片间距的桨距控制系统。 公开了一种方法，其中向转子叶片的叶片桨距系统施加命令信号或俯仰要求，并且接收所得到的响应信号或俯仰响应。 将接收到的音调响应与参考值进行比较，并且如果检测到响应信号和参考值之间的差异大于预设标准，则可能产生指示音调系统故障的信号。 因此，可以检测叶片桨距系统的偏离行为，其能够测试或监测风力涡轮发电机的转子叶片的桨距系统的状况。

    Method for operating a wind turbine at improved power output
    7.
    发明授权
    Method for operating a wind turbine at improved power output 有权
    用于以改进的功率输出操作风力涡轮机的方法

    公开(公告)号：US09261076B2

    公开(公告)日：2016-02-16

    申请号：US13701259

    申请日：2011-05-31

    Applicant: Imad Abdallah ,  Erik Carl Lehnskov Miranda ,  Ali Zaib

    Inventor： Imad Abdallah ,  Erik Carl Lehnskov Miranda ,  Ali Zaib

    IPC: F03D7/02 ,  F03D7/04

    CPC classification number: F03D7/02 ,  F03D7/0224 ,  F03D7/046 ,  F05B2270/20 ,  F05B2270/328 ,  F05B2270/336 ,  Y02E10/723

    Abstract: A method for operating a wind turbine includes: providing a curve defining optimal pitch angle as a function of tip speed ratio or as a function of wind speed; modifying at least a part of the optimal pitch angle curve by applying a safety buffer, thereby obtaining a safety modified pitch angle curve; operating the wind turbine in accordance with the safety modified pitch angle curve; measuring one or more parameters regarding wind conditions and/or loads on one or more component of the wind turbine; adjusting the safety buffer, based on the measurements, thereby obtaining an adjusted pitch angle curve; and operating the wind turbine in accordance with the adjusted pitch angle curve. Since the safety buffer is adjusted based on measured parameters, it can be reduced if actual operating conditions are less severe than expected. This allows the wind turbine to be operated in a more optimal manner.

    Abstract translation: 一种用于操作风力涡轮机的方法包括：提供定义最佳俯仰角的曲线作为叶尖速度比的函数或者作为风速的函数; 通过施加安全缓冲器来修改最佳俯仰角曲线的至少一部分，从而获得安全改进的俯仰角曲线; 根据安全改进的俯仰角曲线操作风力涡轮机; 测量关于所述风力涡轮机的一个或多个部件上的风况和/或负载的一个或多个参数; 基于测量来调整安全缓冲器，从而获得调节的俯仰角曲线; 并且根据调节的俯仰角曲线操作风力涡轮机。 由于安全缓冲器是根据测量参数进行调整的，所以如果实际操作条件比预期的要严格，可以减少安全缓冲器。 这允许以更优化的方式操作风力涡轮机。

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