公开(公告)号：US10519930B2

公开(公告)日：2019-12-31

申请号：US15321817

申请日：2015-06-22

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Martin Ansbjerg Kjær ,  Jesper Sandberg Thomsen

IPC: F03D7/02 ,  F03D17/00 ,  F03D1/06 ,  F03D7/04 ,  G05B19/402

Abstract: The control of the power output of wind turbine generator that operates in a derated mode to generate a produced power output level lower than an available power level. A pitch system sets the blade pitch of a rotor to a pitch value based on the received power reference signal. A power system controls the produced power output level of the wind turbine to the requested power output level. Moreover, the blade pitch of the rotor is further controlled by a pitch feedback control loop that modifies the pitch value based on a difference between the produced power output level and the requested power output level.

公开(公告)号：US20140363292A1

公开(公告)日：2014-12-11

申请号：US14369545

申请日：2012-12-20

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Jesper Sandberg Thomsen ,  Soren Dalsgaard ,  Asger Svenning Andersen ,  Lars Risager

IPC: F03D7/04 ,  G01M5/00 ,  G01L1/26

CPC classification number: F03D7/04 ,  F03D7/042 ,  F03D17/00 ,  G01L1/26 ,  G01M5/0041 ,  G01M5/0066 ,  Y02B10/30

Abstract: A method of estimating an amount of undesired loading experienced by at least a portion of a structure (100) is provided. The structure (100) may be, for example, a wind turbine generator (WTG) and the portion for which undesired loading is estimated may be, for example, a rotor (130) of the WTG. The method includes receiving a first signal characterizing instantaneous stress experienced by a component (140) of the structure (100) and filtering out at least a portion of the received first signal that corresponds to the desired loading experienced by the component to produce a first filtered signal. The amount of undesired loading experienced by the at least a portion of the structure (100) is estimated based at least partially on the first filtered signal.

Abstract translation: 提供了一种估计由结构（100）的至少一部分经历的不希望的加载量的方法。 结构（100）可以是例如风力涡轮发电机（WTG），并且估计不期望负载的部分可以是例如WTG的转子（130）。 所述方法包括接收表征由所述结构（100）的组件（140）经历的瞬时应力的第一信号，并且过滤所接收到的所述第一信号的至少一部分，所述第一信号对应于由所述组件经历的期望负载以产生第一滤波 信号。 至少部分地基于第一滤波信号来估计结构（100）的至少一部分所经历的不需要的负载量。

公开(公告)号：US12031522B2

公开(公告)日：2024-07-09

申请号：US18499397

申请日：2023-11-01

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Sebastiaan Mulders ,  Fabio Spagnolo ,  Jesper Sandberg Thomsen ,  Julio Xavier Vianna Neto ,  Jan-Willem Van Wingerden ,  Livia Brandetti

IPC: F03D7/02 ,  F03D1/00 ,  F03D7/04

CPC classification number: F03D7/0224 ,  F03D1/00 ,  F03D7/042 ,  F05B2220/30 ,  F05B2270/101 ,  F05B2270/32

Abstract: The present invention relates to controlling a wind turbine with a scaled power coefficient where the scaled power coefficient is determined in an adjustment process. In particular is disclosed control of a wind turbine in a partial load operation mode based on a tip-speed ratio (TSR) tracking scheme which based on an estimated wind speed determines a power setpoint. The disclosed adjustment process comprises setting a scaled power coefficient as a predetermined power coefficient multiplied by a scaling factor; adding a time-varying perturbation signal to the power setpoint; determining a transfer function from the perturbation signal to a power error; evaluate the frequency response of the transfer function over a time period to determine the scaling factor which minimizes the gain of the transfer function; and setting the operating power coefficient as the scaled power coefficient.

公开(公告)号：US11245261B2

公开(公告)日：2022-02-08

申请号：US16065591

申请日：2016-12-12

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Dumitru-Mihai Valcan ,  Jorge Martinez Garcia ,  Kouroush Nayebi ,  Jesper Sandberg Thomsen ,  Martin Ansbjerg Kjær

IPC: H02J3/00 ,  H02J3/38 ,  F03D7/02 ,  F03D7/04 ,  H02J3/46

Abstract: A method for controlling a wind power plant comprising a plurality of wind turbine generators, wherein the method comprises: deriving an estimated value for electrical losses in the wind power plant, deriving a measured value for electrical losses in the wind power plant, based on a difference between an aggregated power production from the plurality of wind turbine generators and a power measurement at a point of common coupling; applying the estimated value for electrical losses and the measured value for electrical losses in an active power control loop, comprising a regulator; and controlling by means of the active power control loop an active power production of the wind power plant at the point of common coupling.

公开(公告)号：US10907612B2

公开(公告)日：2021-02-02

申请号：US16088419

申请日：2017-03-30

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Jacob Deleuran Grunnet ,  Thomas Krüger ,  Ali Zaib ,  Jesper Sandberg Thomsen

IPC: F03D9/00 ,  H02P9/04 ,  F03D7/04 ,  F03D7/02

Abstract: A wind turbine control system comprising at least one control module configured to output a control signal for a control mechanism of a wind turbine, and a gain calculator for calculating a gain parameter associated with the control module, wherein the gain parameter is calculated based on a computerized real-time blade model using a determined wind turbine operating point as an input. The blade model may be a blade element momentum model. In another aspect, the invention may be expressed as a method of controlling a control mechanism of a wind turbine.

公开(公告)号：US10364796B2

公开(公告)日：2019-07-30

申请号：US15022876

申请日：2014-09-16

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Per Brath ,  Martin Ansbjerg Kjær ,  Jesper Sandberg Thomsen

IPC: F03D17/00 ,  F03D7/02 ,  F03D7/04 ,  F03D1/06

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 Ct 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.

公开(公告)号：US10119521B2

公开(公告)日：2018-11-06

申请号：US14369545

申请日：2012-12-20

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Jesper Sandberg Thomsen ,  Soren Dalsgaard ,  Asger Svenning Andersen ,  Lars Risager

IPC: G01L1/26 ,  G01M5/00 ,  F03D7/04 ,  F03D17/00

Abstract: A method of estimating an amount of undesired loading experienced by at least a portion of a structure (100) is provided. The structure (100) may be, for example, a wind turbine generator (WTG) and the portion for which undesired loading is estimated may be, for example, a rotor (130) of the WTG. The method includes receiving a first signal characterizing instantaneous stress experienced by a component (140) of the structure (100) and filtering out at least a portion of the received first signal that corresponds to the desired loading experienced by the component to produce a first filtered signal. The amount of undesired loading experienced by the at least a portion of the structure (100) is estimated based at least partially on the first filtered signal.

公开(公告)号：US20150030448A1

公开(公告)日：2015-01-29

申请号：US14369524

申请日：2012-12-13

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Asger Svenning Andersen ,  Jesper Sandberg Thomsen ,  Jacob Krogh Kristoffersen ,  Ib Svend Olesen ,  Jonas Romblad

IPC: F03D7/02 ,  F03D7/04

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 fibre-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每个都具有多个光纤压力变化传感器，其可以检测失速状态的开始。 失速状态传感器的输出被输入到失速计数电路，每当收到失速指示时，该失速计数电路增加失速计数信号。 失速计数信号随时间呈指数衰减，并且将当前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余量的值。 一个λ：＆thetas; 尖端速度与风速比λ相对于俯仰角参考曲线的曲线; 然后从失速边界确定。

公开(公告)号：US12180937B2

公开(公告)日：2024-12-31

申请号：US17911983

申请日：2021-03-15

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Jesper Sandberg Thomsen ,  Johannes Philippus Maree ,  Tobias Gybel Hovgaard ,  Peter Sloth-Odgaard

IPC: H02P9/02 ,  F03D7/02

Abstract: The invention relates to control of a wind turbine to address varying drivetrain loading. This is obtained by determining a modification signal to be set as a control signal. A signal indicative of a speed of the electrical generator a signal indicative of a requested output power are received. The signal indicative of a speed is filtering to isolate frequencies in a selected disturbance frequency band to generate a disturbance signal. The disturbance signal is phase shifted and combined with a requested output power to obtain the modification signal.

公开(公告)号：US12135012B2

公开(公告)日：2024-11-05

申请号：US17615060

申请日：2020-05-26

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Jesper Sandberg Thomsen ,  Morten Bro ,  Ian Couchman

IPC: F03D7/00 ,  F03D7/02

Abstract: The present invention relates to a rotor control system for actuating pitch of pitch adjustable rotor blades of a wind turbine in order to reduce edgewise blade vibrations. The system comprises a pitch actuation unit being arranged to receive an edgewise load signal and apply m-blade coordinate transformations, such as the Coleman transformations, to the edgewise load signal. Based on a selected signal component at either a backward whirling frequency or a forward whirling frequency, a modified modification signal is obtained.