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公开(公告)号：US20140377064A1
公开(公告)日：2014-12-25
申请号：US14366897
申请日：2012-12-14
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： Jacob Krogh Kristoffersen , Asger Svenning Andersen , Søren Sørensen , Lars Risager
CPC classification number: F03D7/0224 , F03D7/044 , F05B2270/322 , F05B2270/331 , F05B2270/808 , Y02E10/723
Abstract: The invention relates to a method of controlling a wind turbine comprising one or more blades attached to a rotor hub, the one or more blades being arranged to pitch relative to the hub, the method comprising the steps of obtaining a blade load signal comprising data on an absolute load on the one or more blades; processing the blade load data to detect a high thrust wind event, and generating a control signal comprising a pitch contribution for affecting the blades to pitch out of the wind in response to the detected wind event. The invention also relates to a wind turbine, a control system for a wind turbine and a computer program product being adapted to enable a computer system to perform the method of the invention.
Abstract translation: 本发明涉及一种控制风力涡轮机的方法，该风力涡轮机包括连接到转子毂的一个或多个叶片，所述一个或多个叶片布置成相对于轮毂来俯仰，该方法包括以下步骤：获得叶片负载信号，该叶片负载信号包括 在一个或多个叶片上的绝对载荷; 处理所述叶片负载数据以检测高推力风事件，以及响应于所检测到的风事件，产生包括用于影响所述叶片偏转风的俯仰贡献的控制信号。 本发明还涉及风力涡轮机，用于风力涡轮机的控制系统和适于使得计算机系统能够执行本发明的方法的计算机程序产品。
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公开(公告)号：US10669990B2
公开(公告)日：2020-06-02
申请号：US15735513
申请日：2016-06-09
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： Martin Ansbjerg Kjær , Jesper Sandberg Thomsen , Jacob Krogh Kristoffersen , Jacob Deleuran Grunnet , Eik Herbsleb
IPC: F03D7/02
Abstract: The invention relates to a control system for a wind turbine. The wind turbine comprises a power generator configured to generate power dependent on a power reference and a pitch system configured to adjust the pitch of a blade of the wind turbine dependent on a pitch request. The control system comprises a controller configured to determine the pitch request dependent on an adjustable gain. A gain scheduler comprised by the control system is configured to set the adjustable gain to an increased gain value if a rate of change of the power reference, e.g. an external power reference, exceeds a threshold.
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公开(公告)号：US10669986B2
公开(公告)日：2020-06-02
申请号：US15507891
申请日：2015-08-28
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： Jacob Krogh Kristoffersen
Abstract: A method and system for improving the balance of a rotor in a wind turbine, including; determining blade load data associated with a selected rotor blade pair; determining, based on the blade load data, pitch imbalance data associated with the selected rotor blade pair, wherein the pitch imbalance data associated with a rotor blade pair is based on measurements of at least blade loading, rotor speed and wind speed; and, determining and applying pitch control inputs to one or both of the selected rotor blade pair in order to reduce the severity of the rotor imbalance.
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公开(公告)号：US10294923B2
公开(公告)日：2019-05-21
申请号：US15559797
申请日：2016-03-16
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： Jacob Krogh Kristoffersen
Abstract: Embodiments herein describe using a tower damping system to reduce oscillations in a wind turbine. To do so, the dampening system may use a metric that is decoupled from the activation strategy in order to control the blade pitch and avoid or mitigate feedback loops. In one embodiment, the dampening system measures a force on the turbine that is correlated to a fatigue loading on the tower. Furthermore, the turbine may perform a calculation to decouple the force from the activation strategy. That is, the turbine determines the value of the force as if the damping system was not activated or present. In addition, the dampening system uses the current wind speed and a wind distribution to generate a pitch reference value. The dampening system may use both the pitch reference value and the fatigue loading on the tower to reduce the tower oscillations.
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Patent Agency Ranking
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
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。
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公开(公告)号：US10273938B2
公开(公告)日：2019-04-30
申请号：US15735524
申请日：2016-06-09
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： Martin Ansbjerg Kjær , Jesper Sandberg Thomsen , Jacob Krogh Kristoffersen , Jacob Deleuran Grunnet
Abstract: The invention relates to a control system for a wind turbine. The wind turbine comprises a power generator configured to generate power dependent on a power request. The control system comprises a ramp rate limiter configured to restrict a rate of change of the power request according to a rate of change limit and configured to determine the rate of change limit dependent on a power difference between the power request and an estimated available wind power.
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公开(公告)号：US10107259B2
公开(公告)日：2018-10-23
申请号：US14366897
申请日：2012-12-14
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： Jacob Krogh Kristoffersen , Asger Svenning Andersen , Søren Sørensen , Lars Risager
Abstract: The invention relates to a method of controlling a wind turbine comprising one or more blades attached to a rotor hub, the one or more blades being arranged to pitch relative to the hub, the method comprising the steps of obtaining a blade load signal comprising data on an absolute load on the one or more blades; processing the blade load data to detect a high thrust wind event, and generating a control signal comprising a pitch contribution for affecting the blades to pitch out of the wind in response to the detected wind event. The invention also relates to a wind turbine, a control system for a wind turbine and a computer program product being adapted to enable a computer system to perform the method of the invention.
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公开(公告)号：US09995276B2
公开(公告)日：2018-06-12
申请号：US15320209
申请日：2015-06-15
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： Jacob Krogh Kristoffersen , Søren Sørensen
CPC classification number: F03D7/0224 , F03D1/0675 , F03D7/024 , F03D7/047 , F05B2270/20 , F05B2270/304 , F05B2270/32 , F05B2270/327 , F05B2270/328 , F05B2270/329 , F05B2270/331 , Y02E10/721 , Y02E10/723
Abstract: A wind turbine is controlled in response to an estimate of vertical and/or horizontal wind shear. A tilt moment is estimated from flapwise and edgewise blade bending moments, azimuth and blade pitch positions and used to estimate vertical wind shear. A yaw moment is also estimated from flapwise and edgewise blade bending moments, azimuth and pitch position and used to estimate horizontal wind shear. A tip speed ratio is determined from an estimate of wind velocity over the rotor plane and is used to set a blade pitch angle which is passed to a blade pitch controller. The pitching may be collective or individual. In the latter case, the tip speed ratio is determined from a plurality of rotor plane positions to derive a cyclic pitch reference for each blade.
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公开(公告)号：US09683551B2
公开(公告)日：2017-06-20
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
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 fiber-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.
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