公开(公告)号：US08167556B2

公开(公告)日：2012-05-01

申请号：US12465709

申请日：2009-05-14

Applicant: Martin Bjerge ,  Per Egedal

Inventor： Martin Bjerge ,  Per Egedal

IPC: F03D7/02

CPC classification number: F03D7/0272 ,  F03D7/0276 ,  F03D7/0296 ,  F03D7/042 ,  F05B2260/903 ,  F05B2260/96 ,  F05B2270/1095 ,  F05B2270/304 ,  F05B2270/327 ,  H02P9/006 ,  H02P2101/15 ,  Y02E10/723 ,  Y10S416/50

Abstract: A method of damping tower oscillation in a wind turbine is provided. The method includes the steps of determining a rotor rotational speed of the wind turbine and controlling the rotor rotational speed such that a critical rotor speed is avoided, characterized in that it further comprises the following steps: selecting at least one input parameter value; selecting, according to the input parameter value, an operation mode for controlling the rotor rotational speed, wherein the operation mode is selected from a set of modes comprising a mode of auto tune operation; on the condition of the selected operation mode comprising the mode of auto tune operation, performing the following steps: detecting the tower oscillation frequency; calculating the critical rotor speed based on the detected tower oscillation frequency and controlling the rotor rotational speed to avoid the calculated critical rotor speed. An apparatus and a computer program product are also provided.

Abstract translation: 提供了一种在风力涡轮机中抑制塔架振荡的方法。 该方法包括以下步骤：确定风力涡轮机的转子转速并控制转子转速使得避免临界转子速度，其特征在于还包括以下步骤：选择至少一个输入参数值; 根据输入参数值选择用于控制转子旋转速度的操作模式，其中所述操作模式是从包括自动调谐操作模式的一组模式中选择的; 在包括自动调谐模式的所选择的操作模式的条件下，执行以下步骤：检测塔架振荡频率; 基于检测到的塔架振荡频率计算临界转子转速，并控制转子转速以避免计算的临界转子转速。 还提供了一种装置和计算机程序产品。

公开(公告)号：US08162608B2

公开(公告)日：2012-04-24

申请号：US12283058

申请日：2008-09-09

Applicant: Bo Birkemose ,  Per Egedal

Inventor： Bo Birkemose ,  Per Egedal

IPC: F03D7/02

CPC classification number: F03D7/024 ,  F03D7/0204 ,  F03D7/0224 ,  F03D7/0292 ,  F03D7/044 ,  F05B2260/70 ,  F05B2270/1095 ,  F05B2270/329 ,  Y02E10/723

Abstract: Wind turbine, yaw system controller and yaw system for a wind turbine and method of reducing the loads on such a yaw system.A method for reducing the loads acting on a wind turbine yaw system (19) due to yawing moments which are induced to the yaw system (19) by a rotor which comprises at least one rotor blade with a pitch control system is provided. In the method, the yawing moment which is induced to the yaw system (19) by the rotor is determined and the pitch of the at least one rotor blade is set based on the detected yawing moment such that the determined yawing moment is reduced.

Abstract translation: 用于风力涡轮机的风力涡轮机，偏航系统控制器和偏航系统以及减少这种偏航系统上的负载的方法。 提供了一种用于减少作用在风力涡轮机偏航系统（19）上的负载的方法，该方法由于由包括至少一个具有桨距控制系统的转子叶片的转子而被偏转系统（19）感应的偏转力矩。 在该方法中，确定由转子感应到偏航系统（19）的偏转力矩，并且基于检测到的横摆力矩来设定至少一个转子叶片的俯仰，使得所确定的横摆力矩减小。

公开(公告)号：US08092174B2

公开(公告)日：2012-01-10

申请号：US12224901

申请日：2007-01-03

Applicant: Per Egedal

Inventor： Per Egedal

IPC: F03B3/12

CPC classification number: G01P3/22 ,  F03D17/00 ,  F05B2260/821 ,  F05B2270/101 ,  F05B2270/327 ,  F05B2270/329 ,  F05B2270/807 ,  G01P3/16 ,  G01P3/44 ,  G01P21/02

Abstract: A method of determining at least one rotation parameter of a wind turbine rotor rotating with a rotation speed and a phase is provided. The method comprises the steps of: measuring an effective centrifugal force acting in a first pre-determined direction, which is defined in a co-ordinate system rotating synchronously with the rotor, on at least one reference object located in or at the rotor, establishing a first angular frequency representing the rotation speed of the rotor on the basis of variations in the measured effective centrifugal force due to gravitational force, establishing a second angular frequency representing the rotation speed of the rotor by use of at least one yaw rate gyro, and establishing the value of the rotation speed as the rotational parameter by correcting the second angular frequency by comparing it to the first angular frequency.

Abstract translation: 提供一种确定以转速和相位旋转的风力涡轮机转子的至少一个旋转参数的方法。 该方法包括以下步骤：测量在位于转子或转子上的至少一个参考对象上，以与转子同步旋转的坐标系定义的第一预定方向作用的有效离心力，建立 基于由重力引起的测量的有效离心力的变化，表示转子的旋转速度的第一角频率，通过使用至少一个偏航率陀螺仪建立表示转子旋转速度的第二角频率，以及 通过将第二角频率与第一角频率进行比较来校正第二角频率来建立旋转速度的值作为旋转参数。

公开(公告)号：US20110221194A1

公开(公告)日：2011-09-15

申请号：US13040540

申请日：2011-03-04

Applicant: Per Egedal ,  Ole Kjaer ,  Soeren Oemann Lind ,  Henrik Stiesdal ,  Martin Winther-Jensen

Inventor： Per Egedal ,  Ole Kjaer ,  Soeren Oemann Lind ,  Henrik Stiesdal ,  Martin Winther-Jensen

IPC: H02P9/04

CPC classification number: F03D7/0276 ,  F03D7/0224 ,  F03D7/028 ,  F03D7/042 ,  F05B2270/101 ,  F05B2270/1011 ,  F05B2270/1016 ,  F05B2270/102 ,  F05B2270/309 ,  F05B2270/327 ,  Y02E10/723

Abstract: It is described a method for controlling the rotational speed of a rotor of a wind turbine in particular at high wind speeds. The described method comprises (a) determining a rotor acceleration value, wherein the rotor acceleration value is caused by a temporal change of the rotational speed of the rotor, and (b) controlling the rotational speed of the rotor as a function of the rotor acceleration value. It is further described a control system for controlling the rotational speed of a rotor of a wind turbine, a wind turbine being equipped with such a control system and to a computer program, which is adapted for controlling and/or for carrying out the mentioned rotational speed control method.

Abstract translation: 描述了一种用于特别是在高风速下控制风力涡轮机的转子的转速的方法。 所述方法包括：（a）确定转子加速度值，其中转子加速度值是由转子的转速的时间变化引起的，以及（b）根据转子加速度来控制转子的转速 值。 进一步描述了用于控制风力涡轮机的转子的旋转速度的控制系统，配备有这种控制系统的风力涡轮机和适于控制和/或执行所提到的旋转的计算机程序 速度控制方法。

公开(公告)号：US20110210552A1

公开(公告)日：2011-09-01

申请号：US13062257

申请日：2009-08-19

Applicant: Bo Birkemose ,  Per Egedal ,  Erik Groendahl

Inventor： Bo Birkemose ,  Per Egedal ,  Erik Groendahl

IPC: H02P9/04

CPC classification number: H02P9/007 ,  H02P9/02 ,  H02P2101/15

Abstract: An asynchronous power generator for a wind turbine is provided. The asynchronous power generator includes a voltage supply and a stator with stator coils supplied with an alternating voltage by the voltage supply. The voltage supply is configured to adjust the voltage supplied to the stator coils based upon an output power generated by the wind turbine. Further, a method of voltage control is provided.

Abstract translation: 提供了一种用于风力涡轮机的异步发电机。 异步发电机包括电压源和定子，定子线圈通过电压供给交流电压。 电压源被配置为基于由风力涡轮机产生的输出功率来调节提供给定子线圈的电压。 此外，提供了电压控制的方法。

公开(公告)号：US07967564B1

公开(公告)日：2011-06-28

申请号：US12974240

申请日：2010-12-21

Applicant: Jimmi Andersen ,  Per Egedal

Inventor： Jimmi Andersen ,  Per Egedal

IPC: F03D7/00 ,  F03D7/02

CPC classification number: F03D17/00 ,  F05B2270/331 ,  F05B2270/808 ,  F05B2280/5008 ,  Y02E10/721

Abstract: A measurement arrangement for measuring a deflection of a wind turbine rotor blade is provided. The measurement arrangement includes a magnetostrictive sensor, which includes a first sensor part and a second sensor part, a first support structure, which is adapted to be mounted to a first portion of the rotor, wherein the first sensor part is mounted to the first support structure, and a second support structure, which may be mounted to a second portion of the rotor, wherein the second sensor part is mounted to the second support structure and wherein either or both the first portion and the second portion is a portion of the blade. The magnetostrictive sensor measures the relative spatial position between the first sensor part and the second sensor part. A method for measuring a blade deflection and a wind turbine rotor which includes the described blade deflection measurement arrangement are also provided.

Abstract translation: 提供了一种用于测量风力涡轮机转子叶片的偏转的测量装置。 测量装置包括磁致伸缩传感器，其包括第一传感器部分和第二传感器部分，第一支撑结构，其适于安装到转子的第一部分，其中第一传感器部分安装到第一支撑件 结构和第二支撑结构，其可以安装到转子的第二部分，其中第二传感器部分安装到第二支撑结构，并且其中第一部分和第二部分中的任一个或第二部分是叶片的一部分 。 磁致伸缩传感器测量第一传感器部分和第二传感器部分之间的相对空间位置。 还提供了一种用于测量叶片偏转的方法和包括所述叶片偏转测量装置的风力涡轮机转子。

公开(公告)号：US20110153097A1

公开(公告)日：2011-06-23

申请号：US12969927

申请日：2010-12-16

Applicant: Per Egedal ,  Ole Kjaer ,  Mogens Lund

Inventor： Per Egedal ,  Ole Kjaer ,  Mogens Lund

IPC: G06F1/28

CPC classification number: F03D7/042 ,  F03D7/0264 ,  F05B2260/80 ,  F05B2260/821 ,  F05B2270/1011 ,  F05B2270/1016 ,  F05B2270/107 ,  F05B2270/327 ,  F05B2270/807 ,  Y02E10/723

Abstract: In one aspect, a system for triggering an emergency system of a wind turbine is described. The system comprises a sensor for sensing an acceleration value of a portion of the rotor of the wind turbine, an estimation unit coupled to the sensor, wherein the estimation unit is adapted for receiving the acceleration value from the sensor and for estimating a rotor rotational speed value of the rotor of the wind turbine based on the acceleration value, and a triggering unit coupled to the estimation unit, wherein the triggering unit is adapted for receiving the rotor rotational speed value and for triggering the emergency system, when the rotor rotational speed value exceeds a predefined limit value. Further described are a method for triggering an emergency system of a wind turbine, a wind turbine, a computer program and a computer-readable medium, which are all adapted for carrying out the triggering method.

Abstract translation: 一方面，描述了用于触发风力涡轮机的应急系统的系统。 该系统包括用于感测风力涡轮机的转子的一部分的加速度值的传感器，耦合到传感器的估计单元，其中估计单元适于从传感器接收加速度值，并用于估计转子转速 基于加速度值的风力涡轮机的转子的值，以及耦合到估计单元的触发单元，其中触发单元适于接收转子转速值并用于触发应急系统，当转子转速值 超过预定义的限制值。 进一步描述了一种用于触发风力涡轮机，风力涡轮机，计算机程序和计算机可读介质的紧急系统的方法，所述方法都适于执行触发方法。

公开(公告)号：US20100209243A1

公开(公告)日：2010-08-19

申请号：US12664989

申请日：2008-06-23

Applicant: Bo Birkemose ,  Per Egedal

Inventor： Bo Birkemose ,  Per Egedal

IPC: F03D11/00

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

Abstract: 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.

Abstract translation: 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：US20100127495A1

公开(公告)日：2010-05-27

申请号：US12620904

申请日：2009-11-18

Applicant: Per Egedal ,  Andreas Groth Knudsen

Inventor： Per Egedal ,  Andreas Groth Knudsen

IPC: H02P9/04 ,  G06F19/00

CPC classification number: G05B13/027 ,  Y02E10/723

Abstract: A method for estimating an achievable power production of a wind turbine, which is operated with a reduced power set point is provided. The method includes determining the values of at least two parameters, inputting the values of the at least two parameters into a neural network, and outputting an output value from the neural network. The at least two parameters are indicative of an operating condition of the wind turbine. Thereby, the output value is an estimate of the achievable power production of the wind turbine. A control system which is adapted to carry out the described power estimation method is also provided. Furthermore, a wind turbine which uses the control system adapted to carry out the described power estimation method is provided.

Abstract translation: 提供了一种用于估计以减小的功率设定点操作的风力涡轮机的可实现的功率产生的方法。 该方法包括确定至少两个参数的值，将至少两个参数的值输入到神经网络中，以及从神经网络输出输出值。 该至少两个参数表示风力涡轮机的运行状态。 因此，输出值是风力涡轮机的可实现的功率产生的估计。 还提供了适于执行所述功率估计方法的控制系统。 此外，提供了使用适于执行所述功率估计方法的控制系统的风力涡轮机。

公开(公告)号：US20100013235A1

公开(公告)日：2010-01-21

申请号：US12502550

申请日：2009-07-14

Applicant: Martin Bjerge ,  Per Egedal

Inventor： Martin Bjerge ,  Per Egedal

IPC: F03D9/00 ,  H02P9/04

CPC classification number: F03D7/043 ,  F03D7/0272 ,  F03D7/0296 ,  F05B2260/96 ,  F05B2270/335 ,  Y02E10/723

Abstract: A method and an arrangement for the damping of tower-oscillations are provided. The method for the damping of tower-oscillations includes transforming a rotation into electrical power using a generator, which is located on top of the tower. The electrical power is transformed from AC to DC and back to AC by a converter. A power-reference-signal is used by the converter to control the delivered electrical power. A variable power-offset-signal is added to the power-reference-signal before it is used for the control. The variable power-offset-signal is based on a mean value of the power-reference-signal and a side-to-side-oscillation of the tower.

Abstract translation: 提供了一种用于阻尼塔振荡的方法和装置。 用于阻尼塔振荡的方法包括使用位于塔架顶部的发电机将旋转转换成电力。 电力由交流转换为直流电并通过转换器转换回交流电。 转换器使用电源参考信号来控制传送的电力。 在将其用于控制​​之前，将可变功率偏移信号添加到电源参考信号。 可变功率偏移信号基于功率参考信号的平均值和塔的侧向振荡。