公开(公告)号：US20170226988A1

公开(公告)日：2017-08-10

申请号：US15518992

申请日：2015-10-08

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Martin Ansbjerg KJÆR ,  Fabio CAPONETTI ,  Ian COUCHMAN ,  Jesper Sandberg THOMSEN ,  Thomas KRÜGER ,  Jorge Martinez GARCIA

IPC: F03D7/02 ,  H02K7/18 ,  H02P9/04

CPC classification number: F03D7/0284 ,  F03D7/0296 ,  F03D7/048 ,  F05B2260/96 ,  F05B2260/964 ,  F05B2270/334 ,  F05B2270/337 ,  H02K7/183 ,  H02P9/04 ,  Y02E10/723

Abstract: The invention relates to a method for wind turbine generators for reducing electrical disturbances in the form of power variations which are caused by damping controllers arranged the compensate structural oscillations by inducing shaft torque variations. The shaft torque variations are generated by imposing corresponding variations in a generator set-point, e.g. a power or torque set-point. Variations in the generator set-point cause undesired variations in the power injected to the grid by one or more wind turbine generators. According to an embodiment of the invention the electrical disturbances may be reduced by limiting a damping controller's control action. The amount of limitation or restriction of the damping controller may be determined on basis on electrical disturbance information determined from power measured e.g. at a location on the grid.

公开(公告)号：US20190113022A1

公开(公告)日：2019-04-18

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: 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：US20160377057A1

公开(公告)日：2016-12-29

申请号：US15103126

申请日：2014-12-03

Applicant: Vestas Wind Systems A/S

Inventor： Fabio CAPONETTI ,  Martin BRØDSGAARD ,  Thomas KRÜGER

IPC: F03D7/02 ,  F03D9/25 ,  F03D9/00

CPC classification number: F03D7/0224 ,  F03D7/024 ,  F03D7/0268 ,  F03D7/0276 ,  F03D7/0296 ,  F03D9/25 ,  F03D9/255 ,  F05B2260/96 ,  Y02E10/723 ,  Y02E10/725

Abstract: The invention presents a method for operating a horizontal axis wind turbine (1), the wind turbine comprising a tower (2) and a rotor (5) with at least one rotor blade (51), the rotor being connected to the tower, and being adapted to drive a generator (6) connected to a utility grid (8), wherein a pitch angle (A) of each rotor blade is adjustable, the method comprising detecting (905, 911), when the wind turbine is in an idling power producing situation in relation to the utility grid, a tower oscillation, and controlling (907, 913, 914, 915), when the wind turbine is in the idling power producing situation, the pitch angle of the at least one rotor blade so as to produce aerodynamic forces counteracting the detected tower oscillation.

Abstract translation: 本发明提出了一种用于操作水平轴风力涡轮机（1）的方法，所述风力涡轮机包括具有至少一个转子叶片（51）的塔架（2）和转子（5），转子连接到塔架，以及 适于驱动连接到公用电网（8）的发电机（6），其中每个转子叶片的俯仰角（A）是可调节的，所述方法包括当风力涡轮机处于空转状态时检测（905,911） 当风力发电机处于怠速发电状态时，与公用电网相关的动力产生状况，塔架振荡和控制（907,913,914,915），所述至少一个转子叶片的俯仰角为 以产生抵消检测到的塔振荡的空气动力。

公开(公告)号：US20190128242A1

公开(公告)日：2019-05-02

申请号：US16088739

申请日：2017-03-30

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Jacob Deleuran GRUNNET ,  Thomas KRÜGER

IPC: F03D7/04 ,  F03D7/02

Abstract: A wind turbine control system comprising a controller of a control mechanism of a wind turbine, wherein the controller implements a computerized real-time blade model to calculate operational parameters of the controller, and wherein the computerized real-time blade model receives as inputs a determined wind turbine operating point and a rotor-plane wind speed value that is estimated in real-time. In another aspect, the embodiments of the invention provide a method of controlling a control mechanism of a wind turbine. Advantageously, the invention provides a more flexible and responsive control system that is able to adapt to changing wind conditions even if those wind conditions are beyond what is usually predicted.

公开(公告)号：US20170314533A1

公开(公告)日：2017-11-02

申请号：US15528441

申请日：2015-11-20

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Martin ATZLER ,  Thomas SCHEEL ,  Lars Finn Sloth LARSEN ,  Thomas KRÜGER

IPC: F03D7/02 ,  G05B19/402 ,  F03D17/00 ,  G01P5/00

CPC classification number: F03D7/0224 ,  F03D7/022 ,  F03D7/0276 ,  F03D7/046 ,  F03D17/00 ,  F05B2270/304 ,  F05B2270/32 ,  F05B2270/327 ,  F05B2270/328 ,  F05B2270/708 ,  G01P5/00 ,  G05B19/402 ,  G05B2219/2619 ,  Y02E10/723

Abstract: A method for iteratively estimating a wind speed at a wind turbine is disclosed, said wind turbine comprising a rotor carrying a set of wind turbine blades, each wind turbine blade having a variable pitch angle. A minimum tip speed ratio, λmin, is derived, based on an obtained pitch angle, θ. The minimum tip speed ratio, λmin, defines a limit between a stable and an unstable control region. An initial tip speed ratio, λinit>λmin, is selected, and an initial estimated wind speed, vinit, is derived based on the initial tip speed ratio, λint, and an obtained rotational speed, ω, of the rotor. An estimated wind speed, vest, is iteratively derived, based on the obtained rotational speed, ω, and the obtained pitch angle, ω, and using the derived initial estimated wind speed, vinit, as a starting point. The iterative process converges fast and reliably.

公开(公告)号：US20170241405A1

公开(公告)日：2017-08-24

申请号：US15504115

申请日：2015-07-24

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Thomas KRÜGER ,  Fabio CAPONETTI

IPC: F03D7/02 ,  F03D7/04 ,  G05B19/048 ,  F03D1/06

CPC classification number: F03D7/0268 ,  F03D1/06 ,  F03D7/028 ,  F03D7/047 ,  F03D7/048 ,  F05B2220/706 ,  F05B2260/8211 ,  F05B2270/103 ,  F05B2270/1075 ,  F05B2270/20 ,  F05B2270/332 ,  F05B2270/8042 ,  G05B19/048 ,  G05B2219/2619 ,  Y02A30/12 ,  Y02E10/721 ,  Y02E10/723 ,  Y02E10/725 ,  Y02P80/114

Abstract: An apparatus and method is disclosed for over-rating a wind turbine using turbulence prediction. Weather forecast information is used to determine whether there is a risk of turbulent conditions occurring at the site of the wind turbine. The wind turbine is over-rated if turbulent conditions are not predicted, and conversely over-rating is cancelled or reduced if turbulent conditions are expected. This allows an increase in the annual energy production of the wind turbine to be realised. The weather forecast information may be combined with real time measurements of operating conditions to supplement the predictions.

公开(公告)号：US20170234300A1

公开(公告)日：2017-08-17

申请号：US15503629

申请日：2015-08-12

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Martin BRØDSGAARD ,  Thomas KRÜGER

IPC: F03D7/02

Abstract: A wind turbine comprising a tower, a rotor including a plurality of blades, an electrical generator operatively coupled to the rotor, and a control system including an active damping module configured to monitor oscillatory motion of the wind turbine and to output a damping demand signal to damp the oscillatory motion. The control system is configured to perform a rotor imbalance determination process including: controlling the rotating frequency of the rotor so that it substantially coincides with the natural frequency of the tower, determining rotor imbalance data based on the damping demand signal and evaluating said rotor imbalance data to determine the presence of a rotor imbalance condition, and correcting the rotor imbalance condition by applying pitch control inputs to one or more of the plurality of blades so as to reduce the severity of the rotor imbalance. The invention may also be expressed as a method.

公开(公告)号：US20160252075A1

公开(公告)日：2016-09-01

申请号：US15027902

申请日：2014-10-06

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Thomas KRÜGER ,  Martin ATZLER ,  Poul Brandt CHRISTENSEN ,  Robert BOWYER

IPC: F03D7/02 ,  F03D1/00

CPC classification number: F03D7/0292 ,  F03D1/00 ,  F03D7/0224 ,  F03D17/00 ,  F05B2270/332 ,  Y02E10/723

Abstract: Methods and systems for controlling a wind turbine in a manner that takes into account the degree of loading of and damage to one or more components of the turbine are provided. An operational load on a wind turbine part is determined, and is used to compute a damage signal. The damage signal is indicative of the potential damage to the component or to the turbine as a whole that will result if action is not taken to reduce or mitigate the determined load. When the damage signal exceeds a pre-determined threshold, load-reducing wind turbine control means are activated to obviate the estimated damage.

Abstract translation: 提供了以考虑涡轮机的一个或多个部件的装载和损坏程度的方式控制风力涡轮机的方法和系统。 确定风力涡轮机部件上的操作负载，并用于计算损伤信号。 损坏信号表示如果不采取行动来减小或减轻所确定的负载，则整体将对部件或涡轮机造成潜在的损害。 当损伤信号超过预定阈值时，降低风力涡轮机控制装置被激活以消除估计的损坏。

公开(公告)号：US20160377058A1

公开(公告)日：2016-12-29

申请号：US15102955

申请日：2014-12-05

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Fabio CAPONETTI ,  Thomas KRÜGER ,  Ian COUCHMAN ,  Ilias Konstantinos ARISTON ,  Martin BRØDSGAARD ,  Jacob Deleuran GRUNNET ,  Jesper Sandberg THOMSEN ,  Peter Mortensen SIGFRED

IPC: F03D7/02 ,  F03D9/00 ,  F03D7/04

CPC classification number: F03D7/0296 ,  F03D7/0224 ,  F03D7/024 ,  F03D7/0272 ,  F03D7/043 ,  F03D9/25 ,  F05B2220/706 ,  F05B2240/2211 ,  F05B2260/821 ,  F05B2260/964 ,  F05B2270/334 ,  Y02E10/723 ,  Y02E10/725

Abstract: The present invention refers to a method for operating a wind turbine, the wind turbine particularly comprising a tower and a rotor with rotor blades. The pitch angles of the rotor blades are adjusted to generate a force on the rotor and the tower. The force is adjusted to counteract and damp an oscillation. The adjustment is enabled by an activation decision unit, if the activation decision unit decides that certain parameters characterising the oscillation or loads of the tower indicate a requirement and/or if the activation decision unit determines that the generated force is sufficient to counteract an oscillation of the tower. In various embodiments the parameters characterising the oscillation or loads of the tower comprise current oscillations and their amplitude, an estimate of loads incurred in the turbine structure, an estimate whether damping in the near future might become necessary, an indication whether a different oscillation damping algorithm than individual blade pitch control is currently performing, and an indication whether a wind speed is above a certain portion of a rated wind speed.

Abstract translation: 本发明涉及一种用于操作风力涡轮机的方法，所述风力涡轮机特别地包括塔和具有转子叶片的转子。 调整转子叶片的桨距角以在转子和塔上产生力。 调节力以抵消和阻尼振荡。 如果激活判定单元确定表征塔的振荡或负载的某些参数指示要求，和/或如果激活判定单元确定所产生的力足以抵消振荡的振荡 塔。 在各种实施例中，表征塔的振荡或负载的参数包括电流振荡及其振幅，涡轮机结构中引起的负载的估计，是否需要在不久的将来阻尼的估计，是否有不同的振荡阻尼算法 比单个叶片桨距控制正在执行，以及风速是否高于额定风速的某一部分的指示。

公开(公告)号：US20160305402A1

公开(公告)日：2016-10-20

申请号：US15037902

申请日：2014-11-19

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Fabio CAPONETTI ,  Ian COUCHMAN ,  Thomas KRÜGER ,  Ali ZAIB ,  Carsten Nørlund THOMSEN

IPC: F03D7/02 ,  H02J11/00 ,  H02K7/18 ,  F03D9/00 ,  F03D9/25

Abstract: The invention relates to a control apparatus and method for controlling the rotor blades of a wind turbine, and in particular to controlling the rotor blades during an extreme wind event. An extended mode of operation of the wind turbine rotor beyond the cut-out wind speed is provided. In the extended mode of operation, the pitch of the wind turbine blades is actively controlled so that the rotor and the generator idle at a designated rotational speed. The rotational speed may be relatively high, say 15 to 20% of the nominal speed, compared with minimal speeds experienced by purely feathered wind turbine blades, and may be further controlled as a function of the incident wind speed. Output power control in the extended mode may be zero but is preferably a low, but non-zero value. The output power so produced may then be used as an auxiliary power source for controlling the wind turbine in situations where the utility grid fails.

Abstract translation: 本发明涉及一种用于控制风力涡轮机的转子叶片的控制装置和方法，特别涉及在极端风力事件期间控制转子叶片。 提供了超出切断风速的风力涡轮机转子的延长操作模式。 在扩展操作模式中，主动控制风力涡轮机叶片的桨距，使得转子和发电机以指定的转速空转。 与纯羽毛风力涡轮机叶片所经历的最小速度相比，旋转速度可以相对较高，例如额定速度的15至20％，并且可以作为入射风速的函数进一步控制。 扩展模式下的输出功率控制可以为零，但优选为低但非零值。 这样产生的输出功率然后可以用作在公用电网故障的情况下控制风力涡轮机的辅助电源。