METHOD FOR CONTROLLING NOISE GENERATED BY A WIND FARM

    公开(公告)号:US20230366377A1

    公开(公告)日:2023-11-16

    申请号:US18316886

    申请日:2023-05-12

    CPC classification number: F03D7/0296 F05B2260/96 F05B2260/84 F05B2270/333

    Abstract: A method for controlling noise generated by a wind farm with a plurality of wind turbines is disclosed. In the event that a predicted noise level exceeds a predefined threshold noise value, one or more wind turbines are selected using a noise propagation model and respective wind turbine models for the selected one or more wind turbines, and by performing an optimisation process to reduce the predicted noise level at the predefined evaluation position to a level below the predefined threshold noise value while maximising the total power production of the wind farm.

    METHOD FOR VALIDATING AN UPGRADED VERSION OF WIND TURBINE CONTROL SOFTWARE

    公开(公告)号:US20230350663A1

    公开(公告)日:2023-11-02

    申请号:US18141992

    申请日:2023-05-01

    CPC classification number: G06F8/65 F03D7/048

    Abstract: A method for validating a version of wind turbine control software is disclosed. A first version of the wind turbine control software and a second version of the wind turbine control software are running simultaneously on a controller, by applying identical control input to the first version and to the second version, and the first and the second versions of the wind turbine control software each generating control output, based on the received control input. The wind turbine or wind farm is controlled based on the control output generated by the first version of the wind turbine control software. The control output generated by the first version and by the second version of the wind turbine control software are compared, during a time interval, and the second version of the wind turbine control software is validated, based on the comparison.

    GRID SIDE INVERTER SYSTEM ARRANGED FOR CONTROLLING CURRENT INJECTION WHEN A PHASE LOCKED LOOP CONTROLLER IS MISALIGNED

    公开(公告)号:US20230344230A1

    公开(公告)日:2023-10-26

    申请号:US17832223

    申请日:2022-06-03

    CPC classification number: H02J3/16 H02J2300/28

    Abstract: A grid side inverter system includes a grid side inverter, a phase locked loop controller arranged to determine a phase of a dq-frame dependent on a monitored grid voltage vector in the dq-frame and a reference grid voltage vector in the dq-frame, a current reference decision unit arranged to generate a reduction of at least one of an active and a reactive current reference, wherein a decision to generate the reduction is based on an electrical parameter relating to the phase difference of the monitored grid voltage vector and the PLL vector, a current controller arranged to determine control signals for the grid side inverter for controlling generation of active and reactive power to the grid dependent on the active and reactive current references and monitored active and a reactive grid currents in the dq-frame.

    Apparatuses for wind turbine blade railroad transportation and related systems and methods

    公开(公告)号:US11795915B2

    公开(公告)日:2023-10-24

    申请号:US17011287

    申请日:2020-09-03

    CPC classification number: F03D13/40 B61D47/00 B65G67/12 F05B2260/02

    Abstract: A transportation arrangement (10) includes a train (12) including at least first and second railcars (14) operatively coupled to each other for hauling by a locomotive along a railroad and having a first side (20) and a second side (22). The transportation arrangement (10) also includes a blade (40) extending between a root end (42) and a tip end (44), wherein a root region (60) of the blade (40) proximate the root end (42) is supported on the first railcar (14) and pivotable relative thereto about a first vertical axis (V1) spaced apart from the root end (42), and wherein a tip region (64) of the blade (40) proximate the tip end (44) is supported on the second railcar (14) and pivotable relative thereto about a second vertical axis (V2), such that at least a portion of the root region (60) is configured to extend laterally away from the first side (20) of the train (12) when the first and second railcars (14) are longitudinally offset from each other.

    Turner gear assembly for wind turbines and method of using same

    公开(公告)号:US11795913B2

    公开(公告)日:2023-10-24

    申请号:US17913466

    申请日:2021-03-22

    Abstract: A turner gear assembly (52) for turning an unbalanced rotor of a wind turbine (10) having a drivetrain (30). The turner gear assembly (52) includes a turner gear (50) configured to couple to the drivetrain (30) and having at least two motors (58a, 58b), and a valve block (78) connectable to the turner gear (50) and having a first flow control valve (106) configured to be in fluid communication with a pump (80) and with the at least two motors (58a, 58b). The first flow control valve (106) is selectively moveable between a first fluid control position (106a) and a second fluid control position (106b). When the first flow control valve (106) is in the first fluid control position (106a), the at least two motors (58a, 58b) operate in parallel and when the first flow control valve (106) is in the second fluid control position (106b), the at least two motors (58a, 58b) operate in series. A method of operating the turner gear assembly is also disclosed.

    Lifting assembly and a method for handling a component

    公开(公告)号:US11787667B2

    公开(公告)日:2023-10-17

    申请号:US17417965

    申请日:2019-12-17

    CPC classification number: B66C13/08 B66C23/185 B66C23/207

    Abstract: The invention provides a lifting assembly comprising a support structure (4) arranged to support a load (2) suspended from the support structure, a guide line (501) arranged to extend from a first location, to a second location, a wheel assembly (601) with one or more wheels (621, 622, 623) arranged to engage, and roll along, the guide line (501), and a control line assembly (701) arranged to extend from the wheel assembly (601) to the load (2), wherein the lifting assembly comprises a retainer (801) arranged to connect, between the first and second locations, the guide line (501) to the support structure (4).

    CONTROLLING A WIND POWER PLANT BASED ON OPERATING COMMANDS RECEIVED FROM A DISTRIBUTED SYSTEM ACROSS A COMMUNICATIONS NETWORK

    公开(公告)号:US20230313778A1

    公开(公告)日:2023-10-05

    申请号:US18295100

    申请日:2023-04-03

    CPC classification number: F03D7/00

    Abstract: The invention provides a method for controlling a wind power plant that receive operating command requests via a distributed system comprising a plurality of subsystems each associated with a respective party capable of issuing requests. One subsystem generates a request to operate the wind power plant in accordance with a defined operating command desired by the associated party. The request is broadcast to each of the other subsystems to approve or disapprove the requests. Each subsystem broadcasts to the other subsystems if it approves the request, and each subsystem maintains a database including a record of which subsystems have approved the request. The wind power plant is controlled based on which subsystems have approved the request, where at least one subsystem other than the subsystem that generates the request needs to have approved the request before the plant implements the defined operating command.

    Ice shield for tower mounted equipment

    公开(公告)号:US11761428B2

    公开(公告)日:2023-09-19

    申请号:US17612042

    申请日:2020-06-02

    Inventor: Erik Larsen

    Abstract: A tower (1) having equipment (3) mounted thereon is disclosed. The tower (1) has an ice shield assembly (2) for protection to of the equipment (3) against falling ice mounted thereon. The ice shield assembly (2) comprises a tower fixture arrangement (5) being secured to the tower (1) and an ice shield (4) connected 5 to the tower fixture arrangement (5) via a hinge (6). The ice shield (4) is configured for vertically overlapping the horizontal extends of the equipment (3). The ice shield assembly (2) further comprises at least one spring element (7), e.g. in the form of a curved rod, connected at one end to the ice shield (4) and at an opposite end to the tower (1), the at least one spring element (7) 10 being configured to allow the ice shield (4) to pivot relative to the tower (1) at the hinge (6) in order to ensure a gradual transfer of energy from falling ice, which collides with the ice shield (4).

    REINFORCEMENT OF WIND TURBINE STRUCTURES
    70.
    发明公开

    公开(公告)号:US20230287696A1

    公开(公告)日:2023-09-14

    申请号:US18040889

    申请日:2021-08-14

    Inventor: Anders Skafte

    CPC classification number: E04G23/0218 F03D13/20

    Abstract: An aspect of the invention relates to a method of reinforcing a tubular wind turbine structure using a radially adjustable ring stiffener. The ring stiffener comprises a pair of adjacent ring segments coupled together by a coupling means configured to permit radial adjustment of the ring stiffener by varying an intersegmental separation between adjacent ends of those ring segments. The method comprises: positioning the ring stiffener at a reinforcement position within the tubular wind turbine structure; and adjusting the intersegmental separation between the pair of adjacent ring segments to increase the radius of the ring stiffener; and thereby to engage an inner surface of the tubular wind turbine structure with a radial force that holds the ring stiffener at the reinforcement position by means of friction between the ring stiffener and the tubular wind turbine structure.

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