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：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：US20210148336A1

公开(公告)日：2021-05-20

申请号：US16624343

申请日：2018-06-14

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Martin BRØDSGAARD ,  Søren Hove SØRENSEN

IPC: F03D17/00 ,  F01D25/00 ,  G01N3/20

Abstract: Embodiments of the invention deal with determination of edgewise load recurrence signals acting on a wind turbine blade. It is disclosed to obtaining a plurality of measures of a parameter for deriving an edgewise load signal acting on the wind turbine blade; to filter the derived edgewise load signals to separate out frequency content to provide an edgewise component load signals; in the edgewise component load signals a peak edgewise component load signal is identified and a plurality of peak edgewise component load signals is fitted to a distribution function. The fitted peak first edgewise components is extrapolated to estimate an edgewise load recurrence.

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。