Method of damping tower vibrations of a wind turbine and control system for wind turbines
    41.
    发明授权
    Method of damping tower vibrations of a wind turbine and control system for wind turbines 有权
    风力涡轮机的塔架振动和风力发电机控制系统的阻尼方法

    公开(公告)号:US08044529B2

    公开(公告)日:2011-10-25

    申请号:US12383958

    申请日:2009-03-31

    Applicant: Per Egedal

    Inventor: Per Egedal

    Abstract: A control system for a wind turbine is provided. A pitch-control unit establishes a pitch-reference signal representing a pitch to be set by the pitch-actuator system. A rotor-speed input receives a signal representing a speed of the rotor. A speed-reference input receives a speed-reference signal for the rotor speed. An inclination-signal input receives a signal representing a tower inclination. A pitch-reference output outputs the pitch reference signal. A modification unit is connected to the speed-reference input to receive the speed-reference signal and connected to the inclination-signal input to receive the inclination signal. The modification unit establishes a modification signal based on the inclination signal, to modify the speed-reference signal via the modification signal, and to output a modified-speed-reference signal. The pitch-control unit connected to the modification unit to receive the modified-speed-reference signal and establish the pitch-reference value at least based on the difference between the modified-speed-reference and the rotor-speed signals.

    Abstract translation: 提供了一种用于风力涡轮机的控制系统。 俯仰控制单元建立表示由俯仰致动器系统设定的俯仰的俯仰参考信号。 转子速度输入接收表示转子速度的信号。 速度参考输入接收转子速度的速度参考信号。 倾斜信号输入接收表示塔架倾斜度的信号。 音调参考输出输出音调参考信号。 修改单元连接到速度参考输入端以接收速度参考信号并连接到倾斜信号输入端以接收倾斜信号。 修改单元基于倾斜信号建立修改信号,通过修改信号修改速度参考信号,并输出修改速度参考信号。 连接到修改单元的音调控制单元至少基于改变速度基准和转子速度信号之间的差异来接收修改速度参考信号并建立音调基准值。

    WIND TURBINE CONTROL METHODS FOR IMPROVING THE PRODUCTION OF ENERGY RECOVERING ENERGY LOSSES
    42.
    发明申请
    WIND TURBINE CONTROL METHODS FOR IMPROVING THE PRODUCTION OF ENERGY RECOVERING ENERGY LOSSES 有权
    用于改善能源回收能源损失生产的风力涡轮机控制方法

    公开(公告)号:US20110215577A1

    公开(公告)日:2011-09-08

    申请号:US12964757

    申请日:2010-12-10

    Abstract: Method of operation of a variable speed wind turbine (11) comprising control means for a standard regulation tracking a power vs. generator speed curve (21) that also uses an alternative regulation for optimizing the energy production along determinate time periods Tb for compensating previous energy losses at a higher power Pb than the power determined by said standard regulation, said alternative regulation being based on a continuous calculation of the accumulated lost energy ALE as the energy lost with respect to the maximum allowed energy production according to the standard regulation and on a setting of said higher power Pb and a setting of the duration of said time periods Tb being compatible with wind turbine electrical or mechanical limitations. The invención also refers to a wind turbine controlled by said method.

    Abstract translation: 一种变速风力涡轮机(11)的操作方法,包括用于跟踪功率与发电机速度曲线(21)的标准调节的控制装置,所述控制装置还使用用于在沿着确定的时间段Tb优化能量产生的替代调节以补偿先前的能量 以比所述标准规定的功率更高的功率Pb的损失,所述替代调节是基于累积的损失能量ALE的连续计算,作为相对于根据标准规定的最大允许能量产生而损失的能量,以及 所述较高功率Pb的设定和所述时间段Tb的持续时间的设定与风力涡轮机的电气或机械限制兼容。 Invención还指由所述方法控制的风力涡轮机。

    WIND TURBINE GENERATOR AND BLADE PITCH ANGLE CONTROL METHOD THEREOF
    43.
    发明申请
    WIND TURBINE GENERATOR AND BLADE PITCH ANGLE CONTROL METHOD THEREOF 有权
    风力涡轮发电机和叶片倾斜角控制方法

    公开(公告)号:US20110193343A1

    公开(公告)日:2011-08-11

    申请号:US12768329

    申请日:2010-04-27

    CPC classification number: F03D7/043 F03D7/0224 F03D7/024 F03D7/0264 Y02E10/723

    Abstract: The present invention provides a wind turbine generator and a blade pitch angle control method thereof in which an aerodynamic imbalance of a wind turbine rotor at the time of shutdown is further reduced, the maximum load of a wind turbine is further reduced, and the wind turbine generator can be reduced in weight and cost. The wind turbine generator includes a collective pitch angle controller 11 that produces a collective pitch angle demand that is common to blade pitch angles of wind turbine blades, an individual pitch angle producing unit 13 that produces an individual pitch angle demand inherent in each wind turbine blade, multipliers 21 to 23 that multiply the individual pitch angle demand by the individual pitch angle gain; an individual pitch angle gain producing unit 14, and adder 24 to 26 that add collective pitch angle demands to the output of the multipliers 21 to 23 and supply the same to pitch actuators 31 to 33 inherent in the wind turbine blades. When shutdown is performed, the individual pitch angle gain is adjusted such that an individual pitch angle gain is reduced gradually and reaches to zero by the individual pitch angle gain producing unit 14 after first set time.

    Abstract translation: 本发明提供了一种风力发电机及其桨叶角度控制方法,其中进一步降低了风力涡轮机转子在停机时的空气动力学不平衡,进一步降低了风力涡轮机的最大负荷,风力涡轮机 发电机可以减轻重量和成本。 风力涡轮发电机包括一个共同桨距角控制器11,其产生与风力涡轮机叶片的桨叶桨距角共同的总桨距角度需求,单个俯仰角产生单元13,其产生每个风力涡轮机叶片中固有的各个桨距角度需求 ,乘法器21至23,其将各个俯仰角需求乘以各个桨距角增益; 单个桨距角增益产生单元14和加法器24至26,其将乘法器21至23的输出增加集体俯仰角要求,并将其提供给风力涡轮机叶片固有的俯仰致动器31至33。 当执行关闭时,调整各个俯仰角增益,使得各个俯仰角增益在第一设定时间之后由各个俯仰角增益产生单元14逐渐减小并达到零。

    System and method for reducing rotor loads in a wind turbine upon detection of blade-pitch failure and loss of counter-torque
    44.
    发明授权
    System and method for reducing rotor loads in a wind turbine upon detection of blade-pitch failure and loss of counter-torque 有权
    在检测到叶片间距失效和失去反扭矩时,减小风力涡轮机中的转子负载的系统和方法

    公开(公告)号:US07944067B2

    公开(公告)日:2011-05-17

    申请号:US12060833

    申请日:2008-04-01

    Abstract: A system and method for reducing rotor loads in a wind turbine that includes a brake and one or more rotor blades coupled to a rotor. Upon detection of a loss of counter torque and a blade-pitch failure in at least one rotor blade, a processor reduces a generator overspeed threshold value by a predetermined amount and determines a brake-release threshold value. The brake is applied to slow the rotor if the generator/rotor speed exceeds the reduced generator/rotor overspeed threshold value. In addition, the brake is applied to slow the rotor until the generator/rotor speed is below the brake-release threshold value. The rate of change of the pitch angle of the rotor blade may be varied as the blade moves toward feather in response to the detected blade-pitch failure.

    Abstract translation: 一种用于减小风力涡轮机中的转子负载的系统和方法,其包括制动器和联接到转子的一个或多个转子叶片。 当检测到至少一个转子叶片中的反扭矩损失和叶片间距失效时,处理器将发电机超速阈值减小预定量并确定制动释放阈值。 如果发电机/转子转速超过减速发电机/转子超速阈值,则施加制动以减慢转子。 此外,施加制动以减慢转子直到发电机/转子速度低于制动释放阈值。 当叶片响应于检测到的叶片间距失效而朝向羽毛移动时,转子叶片的桨距角的变化率可以变化。

    Method for enhancement of a wind plant layout with multiple wind turbines
    45.
    发明授权
    Method for enhancement of a wind plant layout with multiple wind turbines 有权
    用多个风力发电机增强风力发电厂布局的方法

    公开(公告)号:US07941304B2

    公开(公告)日:2011-05-10

    申请号:US12433020

    申请日:2009-04-30

    Abstract: The layout and configuration of wind turbines in a wind power plant includes identifying constraints of a power plant site and defining at least one region in the site for placement of a plurality of wind turbines. The wind state at the region in the site is determined. An actual wind condition at the various possible wind turbine locations within the site is determined by modeling the wind state with wake effects at the respective wind turbine locations. Individual wind turbine configuration and location within the region is then selected as a function of the actual wind conditions each of the individual wind turbine locations to optimize power output of the individual wind turbines. The selection of turbine configuration includes selection of a turbine hub height that minimizes wake loss of the individual wind turbines as a function of the actual wind conditions predicted for the turbine location.

    Abstract translation: 风力发电厂中的风力涡轮机的布置和配置包括识别发电厂现场的约束并且在现场中定义用于放置多个风力涡轮机的至少一个区域。 确定现场区域的风力状态。 通过在相应的风力涡轮机位置对具有尾流效应的风态建模来确定站点内各种可能的风力涡轮机位置处的实际风况。 然后根据各个风力涡轮机位置的实际风力条件选择区域内的单独的风力涡轮机配置和位置,以优化各个风力涡轮机的功率输出。 涡轮机配置的选择包括根据为涡轮机位置预测的实际风况的函数来选择最小化单个风力涡轮机的尾流损失的涡轮机毂高度。

    Turbine driven electric power production system and a method for control thereof
    47.
    发明授权
    Turbine driven electric power production system and a method for control thereof 失效
    涡轮驱动电力生产系统及其控制方法

    公开(公告)号:US07863767B2

    公开(公告)日:2011-01-04

    申请号:US11921659

    申请日:2006-10-31

    Abstract: A turbine (2) driven electric power production system (1),—said turbine (2) arranged for being driven by a fluid (3) having a fluid speed (v) varying in time,—said turbine (2) connected to a hydrostatic displacement pump (6) further connected to a hydrostatic displacement motor (8) as part of a closed loop hydrostatic transmission system (7),—said motor (8) arranged for driving an electrical generator (9) supplying AC power (10) at a frequency (fg) near a given desired frequency (fdes), characterized by a closed loop system arranged for controlling a volumetric displacement (13) of the hydrostatic motor (8), comprising—a fluid speed meter (11m) arranged for producing a speed signal (11s) representing a speed (v) of said fluid (3), and—a rotational speed meter (12m) arranged for providing a rotational speed signal (12s) representing a rotational speed measurement (ω) of said turbine (2), —a motor displacement control system (15) for continuously receiving said speed signal (11s) and said rotational speed signal (12s) and arranged for calculating a control signal (16), —a volumetric displacement control actuator (17) on said hydrostatic motor, arranged for receiving said control signal (16) for continuously adjusting a volumetric displacement (d) of said hydrostatic motor (8) for maintaining a set turbine tip speed ratio (tsrset) and thereby providing an improved power efficiency of the power production system (1) during fluctuations in said fluid speed (v).

    Abstract translation: 一种涡轮机(2)驱动的电力生产系统(1), - 所述涡轮机(2)被布置成由具有随时间变化的流体速度(v)的流体(3)驱动,所述涡轮机(2)连接到 静压容积泵(6)进一步连接到作为闭环静液压传动系统(7)的一部分的静液驱动马达(8),所述马达(8)布置成驱动提供交流电力(10)的发电机(9) 在特定的期望频率(fdes)附近的频率(fg)处,其特征在于设置有用于控制静液压马达(8)的体积位移(13)的闭环系统,包括:流体速度计(11m) 表示所述流体(3)的速度(v)的速度信号(11s)和布置成提供表示所述涡轮机的转速测量(ω)的转速信号(12s)的转速计(12m) 2), - 用于连续接收所述速度信号的电动机位移控制系统(15) (11s)和所述转速信号(12s),并且被布置成用于计算控制信号(16), - 所述静液压马达上的体积位移控制致动器(17),被布置成用于接收所述控制信号(16),用于连续地调节体积 所述静液压马达(8)的位移(d)用于维持设定的涡轮机叶尖速度比(tsrset),从而在所述流体速度(v)的波动期间提供功率生产系统(1)的改进的功率效率。

    SYSTEM AND METHOD FOR CONTROLLING WIND TURBINE ACTUATION
    48.
    发明申请
    SYSTEM AND METHOD FOR CONTROLLING WIND TURBINE ACTUATION 有权
    用于控制风力涡轮机启动的系统和方法

    公开(公告)号:US20100140940A1

    公开(公告)日:2010-06-10

    申请号:US12631003

    申请日:2009-12-04

    Abstract: A wind turbine includes a plurality of wind turbine blades attached to a rotor positioned atop a tower affixed to a tower foundation. At least one blade pitch sensor is configured to measure blade pitch angles for one or more of the wind turbine blades. A rotor/generator speed sensor is configured to measure the rotational speed of the wind turbine rotor, a corresponding wind turbine generator, or both. A wind turbine nacelle yaw sensor is configured to measure the nacelle yaw, while at least two tower-base bending sensors are configured without use of adhesives, cements or bonding agents to provide large-area measurement of tower deflection. A controller is configured to adjust the pitch angle of one or more of the wind turbine blades in response to the measured one or more blade pitch angles, the measured rotational speed, the measured nacelle yaw and measured tower longitudinal deflection.

    Abstract translation: 风力涡轮机包括附接到定位在固定到塔架基座上的塔顶上的转子的多个风力涡轮机叶片。 至少一个叶片桨距传感器被配置成测量一个或多个风力涡轮机叶片的叶片桨距角。 转子/发电机速度传感器被配置为测量风力涡轮机转子,相应的风力涡轮发电机或两者的转速。 风力涡轮机机舱偏航传感器被配置为测量机舱偏航,而至少两个塔架式弯曲传感器被构造成不使用粘合剂,水泥或粘结剂来提供大面积测量塔架偏转。 控制器被配置为响应于所测量的一个或多个叶片俯仰角,所测量的旋转速度,所测量的机舱偏航度和测量的塔架纵向偏转来调节一个或多个风力涡轮机叶片的桨距角。

    METHOD FOR ENHANCEMENT OF A WIND PLANT LAYOUT WITH MULTIPLE WIND TURBINES
    49.
    发明申请
    METHOD FOR ENHANCEMENT OF A WIND PLANT LAYOUT WITH MULTIPLE WIND TURBINES 有权
    用于增加具有多个风力涡轮机的风力发电机组布局的方法

    公开(公告)号:US20100138201A1

    公开(公告)日:2010-06-03

    申请号:US12433020

    申请日:2009-04-30

    Abstract: The layout and configuration of wind turbines in a wind power plant includes identifying constraints of a power plant site and defining at least one region in the site for placement of a plurality of wind turbines. The wind state at the region in the site is determined. An actual wind condition at the various possible wind turbine locations within the site is determined by modeling the wind state with wake effects at the respective wind turbine locations, the wake effects resulting from cumulative placement of other wind turbines at various locations in the region. Individual wind turbine configuration and location within the region is then selected as a function of the actual wind conditions that each of the individual wind turbine locations to optimize power output of the individual wind turbines. The selection of turbine configuration includes selection of a turbine hub height that minimizes wake loss of the individual wind turbines as a function of the actual wind conditions predicted for the turbine location.

    Abstract translation: 风力发电厂中的风力涡轮机的布置和配置包括识别发电厂现场的约束并且在现场中定义用于放置多个风力涡轮机的至少一个区域。 确定现场区域的风力状态。 通过在相应的风力涡轮机位置对具有尾流效应的风态进行建模来确定场地内各种可能的风力涡轮机位置处的实际风况,这是由于在该区域的各个位置处累积放置其他风力涡轮机所产生的尾迹效应。 然后根据实际风况条件选择区域内的单独的风力涡轮机配置和位置,以使各个风力涡轮机位置中的每一个优化各个风力涡轮机的功率输出。 涡轮机配置的选择包括根据为涡轮机位置预测的实际风况的函数来选择最小化单个风力涡轮机的尾流损失的涡轮机毂高度。

    METHOD FOR CONTROLLING A WIND TUBINE USING A WIND FLOW MODEL
    50.
    发明申请
    METHOD FOR CONTROLLING A WIND TUBINE USING A WIND FLOW MODEL 有权
    使用风向流模型控制风管的方法

    公开(公告)号:US20100092291A1

    公开(公告)日:2010-04-15

    申请号:US12248238

    申请日:2008-10-09

    Abstract: A control device is provided which is adapted for controlling at least one operational parameter of a wind turbine including a machine nacelle and a rotor having at least one rotor blade. The control device includes an input adapted for inputting a signal which is indicative of environmental data of the wind turbine, an evaluation unit adapted for generating at least one control signal on the basis of currently acquired environmental data and on the basis of previously acquired environmental data, and an output adapted to output the control signal adapted for adjusting the at least one operational parameter of the wind turbine.

    Abstract translation: 提供一种控制装置,其适于控制包括机舱和具有至少一个转子叶片的转子的风力涡轮机的至少一个操作参数。 控制装置包括适于输入指示风力涡轮机的环境数据的信号的输入,适于基于当前获取的环境数据并且基于先前获得的环境数据生成至少一个控制信号的评估单元 以及适于输出适于调节风力涡轮机的至少一个操作参数的控制信号的输出。

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