公开(公告)号：US20110148110A1

公开(公告)日：2011-06-23

申请号：US12672532

申请日：2008-08-07

申请人： Per Egedal ,  Henrik Stiesdal

发明人： Per Egedal ,  Henrik Stiesdal

IPC分类号： G01P15/00 ,  H02P9/04

CPC分类号： G05B23/0237 ,  F03D17/00 ,  F05B2270/807 ,  G01H1/006

摘要： A method for monitoring blade frequencies of a wind turbine and a monitoring system are provided. An accelerometer is attached to a rotating hub of a wind turbine measuring vibrations of the hub. To extract vibration signals originating from each blade, the vibration signals are combined with measuring signals from the azimuth angle sensor. Alternatively, the azimuth angle is found by using the measured accelerations in two directions representing the centrifugal forces and vibrating forces of the hub and feeding these signals into a phase locked loop unit establishing a phase of the rotating hub representing the azimuth angle. To extract each blade frequency, a Fast Fourier Transformation is used on the signals from the accelerometer. To monitor a severe change in each blade frequency, each blade frequency is compared to other blade frequencies and an alarm is set when a given level is reached and the wind turbine is stopped.

摘要翻译： 提供了一种用于监测风力涡轮机和监视系统的叶片频率的方法。 加速度计连接到风力涡轮机的旋转轮毂，以测量轮毂的振动。 为了提取源自每个叶片的振动信号，振动信号与来自方位角传感器的测量信号组合。 或者，通过使用表示毂的离心力和振动力的两个方向上测量的加速度，将这些信号馈送到建立表示方位角的旋转轮毂的相位的锁相环单元中来找到方位角。 为了提取每个叶片频率，对来自加速度计的信号使用快速傅立叶变换。 为了监控每个叶片频率的严重变化，将每个叶片频率与其他叶片频率进行比较，并且在达到给定水平并且风力涡轮机停止时设置报警。

公开(公告)号：US20100319336A1

公开(公告)日：2010-12-23

申请号：US12795861

申请日：2010-06-08

申请人： Per Egedal ,  Jesper Munch

发明人： Per Egedal ,  Jesper Munch

IPC分类号： F15B21/00

CPC分类号： F16N19/003 ,  F05B2260/80 ,  F15B19/005 ,  F15B2211/6306 ,  F15B2211/6336 ,  F15B2211/6343 ,  F15B2211/665

摘要： In one aspect, a hydraulic system including a reservoir, a hydraulic device, a first sensor, a second sensor and a controller is described. The reservoir is connected to the hydraulic device for supplying hydraulic fluid to and from the hydraulic device. The first sensor is adapted for measuring a first volume of the hydraulic fluid in the reservoir. The second sensor is connected to the hydraulic device such that at least one parameter being indicative for a second volume of the hydraulic fluid in the hydraulic device is measurable. The controller is adapted for calculating the second volume of the hydraulic fluid based on the at least one parameter. The controller is adapted for determining a leakage of hydraulic fluid in the hydraulic system based on the first volume and the second volume.

摘要翻译： 在一个方面，描述了包括储存器，液压装置，第一传感器，第二传感器和控制器的液压系统。 储液器连接到用于向液压装置供应液压流体的液压装置。 第一传感器适于测量储存器中的液压流体的第一体积。 第二传感器连接到液压装置，使得至少一个指示液压装置中的液压流体的第二体积的参数是可测量的。 控制器适于基于至少一个参数来计算液压流体的第二体积。 控制器适于基于第一容积和第二容积来确定液压系统中的液压流体的泄漏。

公开(公告)号：US09541062B2

公开(公告)日：2017-01-10

申请号：US14084657

申请日：2013-11-20

申请人： Bo Yin ,  Bjorn Andresen ,  Michael Stoettrup ,  Robert J. Nelson ,  Per Egedal

发明人： Bo Yin ,  Bjorn Andresen ,  Michael Stoettrup ,  Robert J. Nelson ,  Per Egedal

IPC分类号： G06F19/00 ,  F03D7/02 ,  H02J3/38 ,  H02J3/46 ,  F03D7/04 ,  H02J3/18

CPC分类号： F03D7/0284 ,  F03D7/048 ,  H02J3/18 ,  H02J3/386 ,  H02J3/46 ,  Y02E10/723 ,  Y02E10/763 ,  Y02E40/30

摘要： A method of operating a wind park having a plurality of wind turbines is provided. The method includes determining a grid condition indicator indicative of the condition of a grid into which the wind park feeds; determining a first maximum power value of the wind park on the basis of the grid condition indicator; determining an operating margin on the basis of the grid condition indicator, for a grid condition indicator indicative of a weak grid; determining a second maximum power value on the basis of the operating margin; and curtailing the active power output of the wind park according to a maximum power value. A computer program product for carrying out the steps of such a method; an active power controller adapted for use in operating a wind turbine of a wind park; a wind turbine; and a wind park are also provided.

摘要翻译： 提供一种操作具有多个风力涡轮机的风力发电场的方法。 该方法包括确定指示风力发电场馈送到的电网状况的电网状况指示器; 基于所述电网条件指示器确定所述风电场的第一最大功率值; 对于指示弱网格的网格条件指示器，基于网格条件指示符来确定操作裕度; 基于操作余量确定第二最大功率值; 并根据最大功率值减小风电场的有功功率输出。 一种用于执行这种方法的步骤的计算机程序产品; 适用于操作风力发电场的风力涡轮机的有功功率控制器; 风力发电机组 还设有一个风力发电场。

公开(公告)号：US09166509B2

公开(公告)日：2015-10-20

申请号：US13613513

申请日：2012-09-13

申请人： Per Egedal ,  Sathees Kumar

发明人： Per Egedal ,  Sathees Kumar

IPC分类号： H02P9/02 ,  H02J3/16 ,  H02J3/28 ,  H02J3/38 ,  H02J1/10

CPC分类号： H02P9/02 ,  H02J3/16 ,  H02J3/28 ,  H02J3/386 ,  Y02E10/72 ,  Y02E10/722 ,  Y02E10/763 ,  Y02E10/766 ,  Y02E40/34 ,  Y02E70/30

摘要： The disclosure concerns a method for operating a wind farm, the wind farm includes a wind turbine, and an energy storage device, the wind farm being connected to an external grid, the method comprising determining a demanded active power, determining a demanded reactive power, determining power production of the wind turbine, and charging the energy storage device, when the power production is above the demanded active power, the demanded reactive power, or the vector sum of demanded active power and demanded reactive power. Furthermore, corresponding wind farm controllers, wind farms, program elements, and computer readable media are subject of the current disclosure.

摘要翻译： 本公开涉及一种用于操作风电场的方法，风力发电场包括风力涡轮机，以及能量存储装置，所述风力发电场连接到外部电网，所述方法包括确定所需有功功率，确定所需无功功率， 当功率生产高于所需有功功率，所需无功功率或所需有功功率和所需无功功率的矢量和时，确定风力涡轮机的功率生产和对能量存储装置的充电。 此外，相应的风电场控制器，风力发电场，程序元件和计算机可读介质是本公开的主题。

公开(公告)号：US09133828B2

公开(公告)日：2015-09-15

申请号：US13638623

申请日：2010-06-15

申请人： Per Egedal ,  Hans Laurberg

发明人： Per Egedal ,  Hans Laurberg

IPC分类号： G01M15/00 ,  F03D11/00 ,  F03D7/04

CPC分类号： F03D11/0025 ,  F03D7/042 ,  F03D80/40 ,  F05B2260/80 ,  F05B2260/96 ,  F05B2270/303 ,  F05B2270/326 ,  F05B2270/334 ,  Y02E10/722 ,  Y02E10/723

摘要： A method for determining a mass change at a rotating blade of a wind turbine is provided. The method includes measuring a vibration quantity representative of a vibration of the wind turbine, measuring an azimuthal quantity representative of a rotation angle of the blade, determining a frequency quantity representative of a vibration frequency of the blade from the vibration quantity and the azimuthal quantity, and determining the mass change at the blade based on the frequency quantity.

摘要翻译： 提供了一种用于确定风力涡轮机的旋转叶片处的质量变化的方法。 该方法包括测量表示风力涡轮机的振动的振动量，测量表示叶片的旋转角度的方位角量，根据振动量和方位角量确定表示叶片的振动频率的频率量， 以及基于所述频率量确定所述叶片的质量变化。

公开(公告)号：US08511988B2

公开(公告)日：2013-08-20

申请号：US12664989

申请日：2008-06-23

申请人： Bo Birkemose ,  Per Egedal

发明人： Bo Birkemose ,  Per Egedal

IPC分类号： F03D1/06

CPC分类号： F03D7/0296 ,  F03D17/00 ,  F05B2260/96 ,  F05B2270/334 ,  F05B2270/807 ,  Y02E10/721 ,  Y02E10/723 ,  Y02E10/726

摘要： A method for monitoring blade frequencies of a wind turbine and a monitoring system for performing the method are provided. An accelerometer or G-sensor is placed into a nacelle of a wind turbine and thereby measuring the vibrations of the nacelle. To extract the vibration signals originating from each blade, the vibration signals are combined with the measuring signals from the azimuth angle sensor (rotating angle), which is normally used for pitch control. To further extract each blade frequency a Fast Fourier Transformation is used on the modulated G-sensor signals. To further monitor a severe and alarming change in each blade frequency, each blade frequency is compared to the other blade frequencies and an alarm is set when a given level is reached.

摘要翻译： 提供了一种用于监视风力涡轮机的叶片频率和用于执行该方法的监视系统的方法。 将加速度计或G传感器放置在风力涡轮机的机舱中，从而测量机舱的振动。 为了提取源自每个叶片的振动信号，振动信号与通常用于俯仰控制的方位角传感器（旋转角度）的测量信号组合。 为了进一步提取每个叶片频率，在调制的G传感器信号上使用快速傅立叶变换。 为了进一步监测每个叶片频率的严重和令人震惊的变化，将每个叶片频率与其他叶片频率进行比较，并在达到给定水平时设置报警。

公开(公告)号：US20130204447A1

公开(公告)日：2013-08-08

申请号：US13364538

申请日：2012-02-02

申请人： Martin Huus Bjerge ,  Per Egedal ,  lb Frydendal ,  Hans Laurberg

发明人： Martin Huus Bjerge ,  Per Egedal ,  lb Frydendal ,  Hans Laurberg

IPC分类号： G06F1/26 ,  G05B13/02

CPC分类号： G05B13/04 ,  F03D7/02 ,  F03D17/00 ,  F05B2270/1095 ,  F05B2270/332 ,  G06Q10/04 ,  G06Q50/06 ,  Y02E10/723

摘要： A method of controlling the load of a wind turbine is provided. A rate of wear experienced by the wind turbine as a result of the current operating conditions of the wind turbine is determined. A control vector for controlling the wind turbine is determined based on the determined rate of wear. The load of the wind turbine is controlled in accordance with the determined control vector. Determining the control vector includes weighting the determined rate of wear by a cost of electricity value and determining the control vector based on the weighted rate of wear.

摘要翻译： 提供了一种控制风力涡轮机负载的方法。 确定风力涡轮机由于风力涡轮机的当前操作条件而经历的磨损速率。 基于确定的磨损速度来确定用于控制风力涡轮机的控制矢量。 根据确定的控制矢量来控制风力涡轮机的负载。 确定控制矢量包括通过电价值来确定确定的磨损速率，并且基于加权的磨损速率来确定控制向量。

公开(公告)号：US20130161952A1

公开(公告)日：2013-06-27

申请号：US13718574

申请日：2012-12-18

申请人： Martin Huus Bjerge ,  Per Egedal ,  Gustav Hoegh ,  Ramakrishnan Krishna ,  Hans Laurberg

发明人： Martin Huus Bjerge ,  Per Egedal ,  Gustav Hoegh ,  Ramakrishnan Krishna ,  Hans Laurberg

IPC分类号： F03D7/02

CPC分类号： F03D7/0224 ,  F03D7/02 ,  F03D7/0264 ,  F03D7/0276 ,  F05B2260/71 ,  F05B2270/101 ,  F05B2270/107 ,  F05B2270/32 ,  F05B2270/327 ,  F05B2270/328 ,  Y02E10/723

摘要： A method for controlling a wind turbine with a rotor and at least one rotor blade, and a control unit are disclosed. The method is characterised in adjusting a pitch angle of the rotor blade and determining the limit of an input value based on the adjusted pitch angle, wherein the input value includes information about the turbine rotational speed.

摘要翻译： 公开了一种用于控制具有转子和至少一个转子叶片的风力涡轮机的方法以及控制单元。 该方法的特征在于调整转子叶片的俯仰角并且基于调节的俯仰角确定输入值的极限，其中输入值包括关于涡轮转速的信息。

公开(公告)号：US20130002211A1

公开(公告)日：2013-01-03

申请号：US13534256

申请日：2012-06-27

申请人： Per Egedal ,  Sathees Kumar ,  Kaj Skov Nielsen

发明人： Per Egedal ,  Sathees Kumar ,  Kaj Skov Nielsen

IPC分类号： G05F1/70

CPC分类号： H02J3/16 ,  G05F1/70 ,  H02J3/1828 ,  H02J3/386 ,  Y02E10/725 ,  Y02E10/763 ,  Y02E40/34

摘要： Described is a controller, wherein the controller is adapted: to control a transformation ratio of a park transformer of a wind turbine park including wind turbines connected to a first node. The park transformer is connected between a first node and a second node which is connected to a utility grid to which electric energy produced by the wind turbines is to be delivered. Further a wind park and a control method are described.

摘要翻译： 描述了一种控制器，其中控制器适于：控制包括连接到第一节点的风力涡轮机的风力涡轮机园区的驻车变压器的变换比。 公园变压器连接在第一节点和第二节点之间，第一节点和第二节点连接到由风力涡轮机产生的电能被输送到的公用电网。 此外，还描述了风力发电场和控制方法。

公开(公告)号：US20120133139A1

公开(公告)日：2012-05-31

申请号：US13365374

申请日：2012-02-03

申请人： Per Egedal

发明人： Per Egedal

IPC分类号： H02P9/04

CPC分类号： F03D80/10 ,  F05B2240/96 ,  Y02E10/72

摘要： A wind turbine control master unit has a communication interface and a signal processing unit. The communication interface is configured to receive a rotor rotational speed of at least a first and a second wind turbine over a communication link. The signal processing unit is configured to determine a synchronized rotor speed value based on a mean value of the rotor rotational speeds. The signal processing unit is configured to calculate a synchronized azimuth angle value based on integrating the synchronized rotor speed value. Further, the communication interface is configured to send the synchronized rotor speed value and the synchronized azimuth angle value over a communication link. Also, a signal light control module and a wind turbine in connection with the control master unit are provided.

摘要翻译： 风力涡轮机控制主单元具有通信接口和信号处理单元。 通信接口被配置为通过通信链路接收至少第一和第二风力涡轮机的转子旋转速度。 信号处理单元被配置为基于转子转速的平均值来确定同步的转子速度值。 信号处理单元被配置为基于对同步的转子速度值进行积分来计算同步的方位角值。 此外，通信接口被配置为通过通信链路发送同步的转子速度值和同步的方位角度值。 此外，提供了与控制主单元相关联的信号灯控制模块和风力涡轮机。