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    A HINGED WIND TURBINE BLADE DEFINING AN ANGLE IN A FLAP-WISE DIRECTION
    1.
    发明申请
    A HINGED WIND TURBINE BLADE DEFINING AN ANGLE IN A FLAP-WISE DIRECTION 审中-公开

    公开(公告)号：WO2020052726A1

    公开(公告)日：2020-03-19

    申请号：PCT/DK2019/050270

    申请日：2019-09-13

    Applicant: VESTAS WIND SYSTEMS A/S

    Inventor： NIELSEN, Thomas S. Bjertrup ,  ANDERSEN, Peter Bjørn ,  LARSEN, Torben Juul ,  ØSTERLUND, Mikkel Kiilerich

    IPC: F03D1/06 ,  F03D7/02

    Abstract: A horizontal axis wind turbine (1) with a wind turbine blade (5) is disclosed, the wind turbine blade (5) comprising a hinge (6) arranged to connect the wind turbine blade (5) to a blade carrying structure (4) of the wind turbine (1), at a non-zero distance from an inner tip (5a) and at a non-zero distance from an outer tip (5b) of the wind turbine blade (5). An outer blade part (7) is arranged between the hinge region and the outer tip (5b), and an inner blade part (8) is arranged between the hinge region and the inner tip (5a). The outer blade part (7) extends from the hinge region along a first direction and the inner blade part (8) extends from the hinge region along a second direction, and the first direction and the second direction form an angle, α, there between, where 0°

    A METHOD FOR REDUCING ROTOR IMBALANCE IN A WIND TURBINE
    2.
    发明申请
    A METHOD FOR REDUCING ROTOR IMBALANCE IN A WIND TURBINE 审中-公开

    公开(公告)号：WO2023078520A1

    公开(公告)日：2023-05-11

    申请号：PCT/DK2022/050231

    申请日：2022-11-03

    Applicant: VESTAS WIND SYSTEMS A/S

    Inventor： SØRENSEN, Kim Hylling ,  LARSEN, Torben Juul ,  NIELSEN, Thomas S. Bjertrup ,  ØSTERLUND, Mikkel Kiilerich ,  RUDOLF, Robert Thomas ,  BØTTCHER, Peter

    IPC: F03D1/06 ,  F03D7/02

    Abstract: A method for controlling a wind turbine (1) is disclosed. The wind turbine (1) comprises three or more wind turbine blades (4), and blade connecting wires (7), each blade connecting wire (7) extending between a connection point (8) on one wind turbine blade (4) and a connection point (8) on a neighbouring wind turbine blade (4). The wind turbine (1) further comprises pre-tension wires (9), each pre-tension wire (9) being connected to one of the blade connecting wires (7) and to a pre-tension adjustment mechanism (10). The method comprises measuring at least one parameter of the wind turbine (1), and deriving an estimate for a rotor imbalance of the wind turbine (1) from the at least one measured parameter. The pre-tension adjustment mechanism (10) is controlled based on the estimated rotor imbalance in order to counteract the rotor imbalance.

    A PITCH CONTROLLED WIND TURBINE WITH BLADE CONNECTING MEMBERS
    3.
    发明申请
    A PITCH CONTROLLED WIND TURBINE WITH BLADE CONNECTING MEMBERS 审中-公开

    公开(公告)号：WO2022128040A1

    公开(公告)日：2022-06-23

    申请号：PCT/DK2021/050374

    申请日：2021-12-17

    Applicant: VESTAS WIND SYSTEMS A/S

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

    IPC: F03D1/06

    Abstract: A pitch controlled wind turbine (1) comprising a tower (2), a nacelle (3) mounted on the tower (2), a hub (4) mounted rotatably on the nacelle (3), and at least three wind turbine blades (5) is disclosed. Each wind turbine blade (5) extends between a root end (10) connected to the hub (4) via a pitch mechanism, and a tip end. The wind turbine (1) further comprises at least three blade connecting members (6), each blade connecting member (6) extending between a connection point (7) on one wind turbine blade (5) and a connection point (7) on a neighbouring wind turbine blade (5), the connection points (7) being arranged at a distance from the root end (10) and at a distance from the tip end of the wind turbine blade (5). The wind turbine (1) further comprises at least three pre-tension members (8), each pre-tension member (8) being connected to one of the blade connecting members (6) and to a hub part (4, 9, 26), the pre-tension members (8) thereby providing pre-tension in the blade connecting members (6).

    A WIND TURBINE WITH A BLADE CARRYING STRUCTURE HAVING AERODYNAMIC PROPERTIES
    4.
    发明申请
    A WIND TURBINE WITH A BLADE CARRYING STRUCTURE HAVING AERODYNAMIC PROPERTIES 审中-公开

    公开(公告)号：WO2020052727A1

    公开(公告)日：2020-03-19

    申请号：PCT/DK2019/050271

    申请日：2019-09-13

    Applicant: VESTAS WIND SYSTEMS A/S

    Inventor： ANDERSEN, Peter Bjørn ,  NIELSEN, Thomas S. Bjertrup ,  ØSTERLUND, Mikkel Kiilerich

    IPC: F03D1/06 ,  F03D7/02

    Abstract: A wind turbine (1) comprising a tower (2), a nacelle (3) mounted on the tower (2) via a yaw system, a hub (4) mounted rotatably on the nacelle (3), the hub (4) comprising a blade carrying structure (5), and one or more wind turbine blades (6) connected to the blade carrying structure (5) via a hinge (7) is disclosed. Each wind turbine blade (6) is thereby arranged to perform pivot movements relative to the blade carrying structure (5) between a minimum pivot angle and a maximum pivot angle. The blade carrying structure (5) is provided with one or more elements (8) configured to improve aerodynamic properties of a surface of the blade carrying structure (5) by increasing a lift and/or decreasing a drag of the blade carrying structure. The increase in lift and/or decrease in drag varies as a function of angle of attack (AOA) between the blade carrying structure (5) and the incoming wind.

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