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    ADAPTIVE CONTROL OF A WIND TURBINE BY DETECTING A CHANGE IN PERFORMANCE
    1.
    发明申请
    ADAPTIVE CONTROL OF A WIND TURBINE BY DETECTING A CHANGE IN PERFORMANCE 审中-公开

    公开(公告)号：US20200263667A1

    公开(公告)日：2020-08-20

    申请号：US16865113

    申请日：2020-05-01

    Applicant: VESTAS WIND SYSTEMS A/S

    Inventor： Thomas S. Bjertrup NIELSEN

    IPC: F03D7/04 ,  H02P9/04 ,  G05B19/042 ,  F03D7/02

    Abstract: A controller for a wind turbine is disclosed, comprising: a processor; an input/output interface; and a memory including instructions that, when executed by the processor, cause the processor to: i) select a setting xi from a list of settings X1, . . . , XN; ii) operate the turbine according to setting Xi for a period of time t1; iii) record a power output signal over t1; iv) repeat steps i) to iii) for another setting in Xi, . . . , XN until all N settings have been used; v) repeat steps i) to iv) for a number of cycles c; vi) calculate a summarised power output for each setting over all cycles; and vii) compare the summarised power outputs across settings and determine whether any setting X* results in a higher power output than other settings tested. A method of identifying power production improvements in a wind turbine, a computer program, and a wind turbine are also disclosed.

    A PITCH CONTROLLED WIND TURBINE WITH BLADE CONNECTING MEMBERS
    2.
    发明公开
    A PITCH CONTROLLED WIND TURBINE WITH BLADE CONNECTING MEMBERS 审中-公开

    公开(公告)号：US20240035440A1

    公开(公告)日：2024-02-01

    申请号：US18257576

    申请日：2021-12-17

    Applicant: VESTAS WIND SYSTEMS A/S

    Inventor： Thomas S. Bjertrup NIELSEN ,  Torben Juul LARSEN ,  Mikkel Kiilerich ØSTERLUND ,  Mohammed FAJAR ,  Peter BØTTCHER ,  Robert RUDOLF

    IPC: F03D1/06

    CPC classification number: F03D1/066 ,  F03D1/0664 ,  F03D1/0677 ,  F05B2240/302

    Abstract: A pitch controlled wind turbine comprising a tower, a nacelle mounted on the tower, a hub mounted rotatably on the nacelle, and at least three wind turbine blades is disclosed. Each wind turbine blade extends between a root end connected to the hub via a pitch mechanism, and a tip end. The wind turbine further comprises at least three blade connecting members, each blade connecting member extending between a connection point on one wind turbine blade and a connection point on a neighboring wind turbine blade, the connection points being arranged at a distance from the root end and at a distance from the tip end of the wind turbine blade. The wind turbine further comprises at least three pre-tension members, each pre-tension member being connected to one of the blade connecting members and to a hub part, the pre-tension members thereby providing pre-tension in the blade connecting members.

    SYSTEM AND METHOD TO MANAGE TORSIONAL OSCILLATION OF A WIND TURBINE TOWER
    4.
    发明申请
    SYSTEM AND METHOD TO MANAGE TORSIONAL OSCILLATION OF A WIND TURBINE TOWER 审中-公开

    公开(公告)号：US20200088165A1

    公开(公告)日：2020-03-19

    申请号：US16494643

    申请日：2018-03-20

    Applicant: VESTAS WIND SYSTEMS A/S

    Inventor： Thomas S. Bjertrup NIELSEN ,  Fabio CAPONETTI ,  Keld HAMMERUM

    IPC: F03D7/02 ,  F03D9/25

    Abstract: A wind turbine comprising a tower, a nacelle, a rotor including a plurality of blades, an electrical generator operatively coupled to the rotor, and a control system. The control system comprises: a sensing system operable to output a signal indicative of the torsional oscillation frequency of the nacelle; a torsional damping module configured to monitor the torsional oscillation signal and to determine one or more blade pitch command signals for damping the torsional oscillation of the tower, and a filter module configured to receive the one or more blade pitch command signals as inputs and to output a respective one or more modified blade pitch command signals, wherein the filter module is configured to filter the one or more blade pitch command input signals to exclude frequency components greater than the torsional oscillation frequency. Aspects of the invention also relate to a method, a computer program software product and a controller for implementing the method.

    A HINGED BLADE WIND TURBINE WITH TILTED AXIS AND/OR CONED ROTOR
    6.
    发明申请
    A HINGED BLADE WIND TURBINE WITH TILTED AXIS AND/OR CONED ROTOR 有权

    公开(公告)号：US20220381222A1

    公开(公告)日：2022-12-01

    申请号：US17776206

    申请日：2020-11-10

    Applicant: VESTAS WIND SYSTEMS A/S

    Inventor： Thomas S. Bjertrup NIELSEN ,  Søren DALSGAARD ,  Brian JØRGENSEN ,  Kim Hylling SØRENSEN

    IPC: F03D7/02 ,  F03D1/06

    Abstract: A wind turbine comprising one or more wind turbine blades arranged to perform pivot movements between a minimum pivot angle and a maximum pivot angle, each wind turbine blade extending between an outer tip and an inner tip, wherein each wind turbine blade has an outer portion extending between the hinge and the outer tip and having a first length, and inner portion extending between the hinge and the inner tip and having a second length, wherein a coning angle of the blade carrying structure is larger than zero and/or a tilt angle of the rotor axis is larger than zero, and wherein a horizontal distance from the tower at a vertical position defined by a position of the hinge at tower passage to a point of connection between the blade carrying structure and the hub is equal to or less than the second length.

    WIND TURBINE BLADE WITH MULTIPLE INNER BLADE PROFILES
    7.
    发明申请
    WIND TURBINE BLADE WITH MULTIPLE INNER BLADE PROFILES 有权

    公开(公告)号：US20220034298A1

    公开(公告)日：2022-02-03

    申请号：US17275312

    申请日：2019-09-13

    Applicant: Vestas Wind Systems A/S

    Inventor： Peter Bjørn ANDERSEN ,  Thomas S. Bjertrup NIELSEN

    IPC: F03D7/02 ,  F03D1/06

    Abstract: A wind turbine blade (6) having a span-wise direction between an inner tip region (6a) and an outer tip region (6b), and a chord-wise direction (AA) perpendicular to the span-wise direction is disclosed. The wind turbine blade (6) comprises a hinge (7), an outer blade part (8) and an inner blade part (9). The hinge (7) is arranged to connect the wind turbine blade (6) to a blade carrying structure (5) of a wind turbine (1). The hinge (7) is arranged at a distance from the inner tip region (6a) and at a distance from the outer tip region (6b). The outer blade part (8) is arranged between the hinge (7) and the outer tip region (6b) and the inner blade part (9) is arranged between the hinge (7) and the inner tip region (6a). The inner blade part (9) comprises at least two inner blade portions (20) each having a profile and wherein the inner blade portions (20) are arranged such that the profiles are spaced from each other in the chord-wise direction (AA).

    WIND TURBINE
    8.
    发明申请
    WIND TURBINE 有权

    公开(公告)号：US20250052225A1

    公开(公告)日：2025-02-13

    申请号：US18723623

    申请日：2022-12-09

    Applicant: VESTAS WIND SYSTEMS A/S

    Inventor： Thomas S. Bjertrup NIELSEN ,  Robert Thomas RUDOLF ,  Torben Juul LARSEN ,  Mikkel Kiilerich ØSTERLUND

    IPC: F03D1/06

    Abstract: A wind turbine comprising includes a tower, a nacelle mounted on the tower, and a rotor mounted to the nacelle. The rotor comprises a hub and at least three pitchable wind turbine blades connected to the hub via respective pitch mechanisms. The airfoil profile of each blade has a thickness being the greatest distance between the windward and leeward sides orthogonal to the chord. Each blade comprises a connection point located at a first radial position between the blade root and the blade tip. The wind turbine further comprises one or more blade connecting members connected between the connection point and a corresponding connection point on a neighbouring blade. The thickness and/or the relative thickness of each blade is substantially constant or has a local minimum within an inboard portion of the blade between the blade root and the connection point.

    PIVOT ANGLE CONTROL OF BLADES OF A WIND TURBINE WITH HINGED BLADES
    9.
    发明申请
    PIVOT ANGLE CONTROL OF BLADES OF A WIND TURBINE WITH HINGED BLADES 有权

    公开(公告)号：US20220397091A1

    公开(公告)日：2022-12-15

    申请号：US17775545

    申请日：2020-11-05

    Applicant: VESTAS WIND SYSTEMS A/S

    Inventor： Thomas S. Bjertrup NIELSEN ,  Søren DALSGAARD ,  Kim Hylling SØRENSEN

    IPC: F03D7/02 ,  F03D1/06

    Abstract: The invention is about a method for controlling a wind turbine with a variable rotor area. The wind turbine comprises a rotor with one or more rotor blades which are arranged hinged at an adjustable pivot angle, where the variable rotor area depends on the pivot angle, and where the pivot angle is adjustable dependent on a variable pivot force provided by a pivot actuator. The method comprises determination of a maximal pivot force based on the input operational parameter which relate to an actual load or a predicted load of the wind turbine, determining a desired pivot force based on a desired operational performance of the wind turbine, and determining a pivot force set-point to be applied to the pivot actuator based on the desired pivot force so that the pivot force set-point is equal to or below the maximal pivot force.

    WIND ENERGY FARM WITH CABLE STAYED WIND TURBINES
    10.
    发明申请
    WIND ENERGY FARM WITH CABLE STAYED WIND TURBINES 有权

    公开(公告)号：US20210071641A1

    公开(公告)日：2021-03-11

    申请号：US16772209

    申请日：2018-12-12

    Applicant: Vestas Wind Systems A/S

    Inventor： Thomas S. Bjertrup NIELSEN

    IPC: F03D13/20 ,  F03D1/06

    Abstract: A wind energy farm (1) comprising at least one first wind turbine (2) and at least one second wind turbine (3) is disclosed. Each wind turbine (2, 3) comprises a tower (7) mounted on a foundation, and at least one rotor (9) with a hub carrying a set of wind turbine blades (10). The at least one first wind turbine (2) is provided with at least three stay cables (4), each stay cable (4) being connected at one end to the tower (7) of said at least one first wind turbine (2) and at the other end to a stay cable foundation. At least one of the stay cable foundations and the foundation of one of said at least one second wind turbines (3) of the wind energy farm (1) are combined into a single combination foundation.

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