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    A METHOD OF OPERATING A POWER GENERATION SYSTEM
    92.
    发明申请
    A METHOD OF OPERATING A POWER GENERATION SYSTEM 审中-公开

    公开(公告)号：WO2020057707A3

    公开(公告)日：2020-03-26

    申请号：PCT/DK2019/050274

    申请日：2019-09-19

    Applicant: VESTAS WIND SYSTEMS A/S

    Inventor： BIRIS, Ciprian ,  TANGE, Kent ,  DOAN, Duy Duc ,  ANDERSEN, Gert Karmisholt ,  LUND, Torsten ,  MEYER, Lars

    IPC: H02M5/458 ,  H02M7/5387

    Abstract: This invention concerns a method of controlling a power converter system 26 operating in an overmodulation region. The power converter system 26 comprises more than two current controllers 71, 73, 77, 79 a modulator 76 and a power converter 78, and the modulator 76 is configured to provide at least one modulated drive signal 87 to the power converter 78 based on voltage reference vector signals 82a, 82b, 82c, 82d from the more than two current controllers 71, 73, 77, 79. The method comprises determining the voltage reference vector signals 82a, 82b, 82c, 82d; determining compensated voltage reference vector signals 84a, 84b, 84c, 84d indicative of a fundamental frequency of a respective voltage reference vector signal 82a, 82b, 82c, 82d; and, determining the at least one modulated drive signal 87 based on a combination of the compensated voltage reference vector signals 84a, 84b, 84c, 84d.

    YAW CLAW SET FOR WIND TURBINE YAW BEARINGS
    94.
    发明申请
    YAW CLAW SET FOR WIND TURBINE YAW BEARINGS 审中-公开

    公开(公告)号：WO2020057701A1

    公开(公告)日：2020-03-26

    申请号：PCT/DK2019/050257

    申请日：2019-09-02

    Applicant: VESTAS WIND SYSTEMS A/S

    Inventor： CHRISTENSEN, Flemming

    IPC: F03D7/02 ,  F03D80/70

    Abstract: A set (200) of yaw claws (150) is provided comprising at least a first yaw (150a) claw and a second yaw claw (150b). The first yaw claw (150a) is to be used in a bearing ring (140) of a first yaw bearing (130) and the second yaw claw (150b) in a bearing ring (130) of a second yaw bearing (140). A circumference of the bearing ring (140) of the first yaw bearing (130) is substantially different from a circumference of the bearing ring (140) of the second yaw bearing (130). Each yaw claw (150) has a periphery, formed by a first side end (176), a second side end (178), an inner arc (172) and an outer arc (174), the inner arc (172) and the outer arc (174) being concentric with the respective bearing ring (140). At least two spring packs (166) are provided for pre-tensioning the yaw claw (150), respective spring pack centres (167) of the at least two spring packs (166) being arranged on a spring pack centreline (169) that is concentric with the inner arc (172) and the outer arc (174). A length of the spring pack centreline (169), measured from the first side end (176) to the second side end (178), of the first yaw claw (150a) is substantially equal to a length of the spring pack centreline (169) of the second yaw claw (150b).

    WIND TURBINE TOWER AND METHOD OF INSTALLING A WIND TURBINE TOWER
    95.
    发明申请
    WIND TURBINE TOWER AND METHOD OF INSTALLING A WIND TURBINE TOWER 审中-公开

    公开(公告)号：WO2020048572A1

    公开(公告)日：2020-03-12

    申请号：PCT/DK2019/050259

    申请日：2019-09-02

    Applicant: VESTAS WIND SYSTEMS A/S

    Inventor： PEDERSEN, Gunnar K. Storgaard ,  LARSEN, Gerner

    IPC: F03D13/20 ,  E04H12/08 ,  E04H12/20

    Abstract: A wind turbine tower having a lower wind turbine tower member and an upper wind turbine tower member. The upper wind turbine tower member has a hollow body with a flange formed at its lower end which projects radially inwardly. The flange has an engaging portion configured to engage with the lower wind turbine tower member, and a first overhanging portion configured to extend outwardly beyond the lower wind turbine tower member when the engaging portion of the flange and lower member are engaged. A plurality of first tension stay connectors are located at the first overhanging portion of the flange which are configured to enable a plurality of first tension stays to be secured to the wind turbine tower from within the hollow body.

    A HYBRID POWER PLANT
    96.
    发明申请
    A HYBRID POWER PLANT 审中-公开

    公开(公告)号：WO2020030237A1

    公开(公告)日：2020-02-13

    申请号：PCT/DK2019/050239

    申请日：2019-08-08

    Applicant: VESTAS WIND SYSTEMS A/S

    Inventor： RAGHUCHANDRA, Karthikeya Balladi ,  DEMSA, Loránd

    IPC: H02J3/38 ,  F03D9/00 ,  H02S10/12

    Abstract: A power plant comprising: a plurality of photovoltaic (PV) modules arranged in a first and a second region of the power plant, wherein the PV modules in the same region are electrically connected with each other and wherein the PV modules of the first region are electrically connected to a local grid of the power plant via a first converter, and the PV modules of the second region are electrically connected to the local grid via a second converter; and a wind turbine generator (WTG) which is arranged such that the WTG is able to cast a shadow over at least one of the PV modules; wherein the first region and the second region extend in a substantially radial direction away from the WTG such that at most one of the two regions is at least partially covered by the shadow of the WTG at any time.

    MULTI-ROTOR WIND TURBINE OSCILLATION DAMPING
    98.
    发明申请
    MULTI-ROTOR WIND TURBINE OSCILLATION DAMPING 审中-公开

    公开(公告)号：WO2020007431A1

    公开(公告)日：2020-01-09

    申请号：PCT/DK2019/050216

    申请日：2019-07-03

    Applicant: VESTAS WIND SYSTEMS A/S

    Inventor： NETO, Julio Xavier Vianna ,  DALSGAARD, Søren ,  YDE, Anders ,  SØRENSEN, Kim Hylling

    IPC: F03D1/02 ,  F03D3/02 ,  F03D7/02 ,  F03D7/04

    Abstract: A method of damping oscillations in a multi-rotor wind turbine and a wind turbine are provided. The wind turbine comprises a wind turbine support structure and at least a first nacelle with a first rotor and a second nacelle with a second rotor, at least one of the nacelles being located at a position away from a central longitudinal axis of the wind turbine support structure. The method comprises the steps of receiving and processing motion data, selecting a damping algorithm and generating a pitch control signal. The processing comprises determining at least one prominent oscillation mode of the wind turbine support structure and selecting a corresponding damping algorithm.

    A WIND TURBINE BLADE, A METHOD OF CONTROLLING A WIND TURBINE, A CONTROL SYSTEM, AND A WIND TURBINE
    99.
    发明申请
    A WIND TURBINE BLADE, A METHOD OF CONTROLLING A WIND TURBINE, A CONTROL SYSTEM, AND A WIND TURBINE 审中-公开

    公开(公告)号：WO2019242825A1

    公开(公告)日：2019-12-26

    申请号：PCT/DK2019/050197

    申请日：2019-06-20

    Applicant: VESTAS WIND SYSTEMS A/S

    Inventor： BOSUKONDA, Pradeep ,  ROSSEL, Tobias Østergaard ,  NIELSEN, Johnny

    IPC: F03D1/06 ,  G01S17/95

    Abstract: A wind turbine blade (80) is provided which comprises a main blade portion and a light detection and ranging (LIDAR) element (86), the main blade portion having a shell (81) defining an outer aerodynamic surface of the blade (80), and the LIDAR element (86) being disposed within a volume (82) bounded by the outer aerodynamic surface and comprising at least one LIDAR system (88) configured to transmit light beams away from the blade and to detect reflected light beams incident upon the blade (80), wherein the shell (81) comprises at least one aperture extending at least partly through a thickness of the shell (81) and containing optically transparent material, wherein the at least one LIDAR system (88) is disposed within a volume (82) bounded by an inner surface of the shell and is positioned to transmit and detect light beams through the optically transparent material, wherein the LIDAR element (86) comprises a housing (90) coupled to a surface of the blade within the volume bounded by the inner surface of the shell, the housing (90) comprising a gyroscope mechanism coupled to the at least one LIDAR system (88) such that an orientation of the at least one LIDAR system is substantially unaffected by movement of the blade (80) so as to vary an angle at which light beams are transmitted through the optically transparent material as the blade moves.

    A WIND TURBINE WITH BLADES HINGED AT AN INTERMEDIATE POSITION
    100.
    发明申请
    A WIND TURBINE WITH BLADES HINGED AT AN INTERMEDIATE POSITION 审中-公开

    公开(公告)号：WO2019238190A1

    公开(公告)日：2019-12-19

    申请号：PCT/DK2019/050182

    申请日：2019-06-12

    Applicant: VESTAS WIND SYSTEMS A/S

    Inventor： NIELSEN, Thomas S. Bjertrup ,  ANDERSEN, Peter Bjørn

    IPC: F03D1/06 ,  F03D7/02

    Abstract: A wind turbine (1) comprising a tower (2), a nacelle (3) and a hub (7) is disclosed. The hub (7) comprises a blade carrying structure (4) with one or more wind turbine blades (5) connected thereto. Each of the wind turbine blades (5) defines an aerodynamic profile having a chord which varies along a length of the wind turbine blade (5). Each of the wind turbine blades (5) is connected to the blade carrying structure (4) via a hinge (6) at a hinge position of the wind turbine blade (5), each wind turbine blade (5) thereby being arranged to perform pivot movements relative to the blade carrying structure (4) between a minimum pivot angle and a maximum pivot angle. The hinge position is arranged at a distance from the inner tip end (5a) and at a distance from the outer tip end (5b), and the chord at the hinge position is larger than or equal to the chord at the inner tip end (5a) and larger than the chord at the outer tip end (5b).

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