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公开(公告)号：US20230050448A1
公开(公告)日：2023-02-16
申请号：US17787911
申请日：2020-12-18
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： Esmaeil EBRAHIMZADEHVESHAREH , Torsten LUND , Mark FABER , Poul Brandt CHRISTENSEN , Gert Karmisholt ANDERSEN
Abstract: The invention relates to a method for damping drive train oscillations of a VSM configured wind turbine. The method comprises determining a drive train damping power signal based on speed signal representing a generator speed, determining a power deviation based on a combination of a power reference for a desired power production, the drive train damping power-signal, a grid power supplied by the line side converter to the grid and a damping power, determining a virtual synchronous machine angle based on the power deviation so that the derivative of the virtual synchronous machine rotational speed is indicative of the power deviation, determining a converter reference for controlling the line side converter to generate the desired active power based on the virtual synchronous machine angle and a voltage reference for a voltage amplitude to be generated by the line side converter, and applying the converter reference to the line side converter.
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公开(公告)号：US11578695B2
公开(公告)日：2023-02-14
申请号：US16855159
申请日：2020-04-22
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： Jacob Deleuran Grunnet , Tobias Gybel Hovgaard , Jan-Willem Van Wingerden , Sebastiaan Mulders
Abstract: Techniques for controlling rotor speed of a wind turbine. One technique includes defining a system model describing resonance dynamics of a wind turbine component, such as a wind turbine tower, where the system model has a nonlinear input term, e.g. a periodic forcing term. A transform is applied to the system model to obtain a transformed model for response oscillation amplitude of the wind turbine component, where the transformed model has a linear input term. A wind turbine model describing dynamics of the wind turbine is then defined, and includes the transformed model. A model-based control algorithm, e.g. model predictive control, is applied using the wind turbine model to determine at least one control output, e.g. generator torque, and the control output is used to control rotor speed of the wind turbine.
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公开(公告)号：US20230022674A1
公开(公告)日：2023-01-26
申请号：US17785479
申请日：2020-12-15
Applicant: Vestas Wind Systems A/S
Inventor： Jonathan Smith
IPC: F03D1/06
Abstract: There is provided a wind turbine blade extending longitudinally in a spanwise direction between a root end and a tip end, and transversely in a chordwise direction between a 5 leading edge and a trailing edge. The wind turbine blade comprises an outer shell defining a substantially hollow interior, and a shear web arranged inside the outer shell and extending longitudinally in the spanwise direction. The shear web comprises an elongate web panel and a mounting flange extending along a longitudinal edge of the web panel, the mounting flange comprising an inboard end portion defining a root end of 10 the mounting flange and an outboard portion defining a tip end of the mounting flange. The outboard portion extends along a majority of the length of the elongate web panel. The inboard end portion of the mounting flange is bonded to an inner surface of the blade shell by a first adhesive, and the outboard portion of the mounting flange is bonded to the inner surface of the blade shell by a second adhesive. The first adhesive has a 15 lower elastic modulus than the second adhesive, and/or a chordwise width of the inboard end portion of the mounting flange is enlarged in comparison to a chordwise width of the outboard portion of the mounting flange adjacent to the inboard end portion.
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公开(公告)号：US20230021757A1
公开(公告)日：2023-01-26
申请号：US17791157
申请日：2021-01-05
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： David STEELE , Kristian KIIB
Abstract: A wind turbine comprising: a tower; a first arm extending from the tower; a first rotor-nacelle assembly disposed on the first arm; a first movement sensor disposed on the first arm or on the first rotor-nacelle assembly and arranged to generate first movement data based on movement of the first arm or of the first rotor-nacelle assembly; a second arm extending from the tower; a second rotor-nacelle assembly disposed on the second arm; a second movement sensor disposed on the second arm or on the second rotor-nacelle assembly and arranged to generate second movement data based on movement of the second arm or of the second rotor-nacelle assembly; and a control system coupled to the first and the second movement sensors and arranged to receive and to process the first and second movement data; wherein the control system is arranged to determine an oscillation characteristic of the wind turbine from the first and the second movement data.
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公开(公告)号：US11563385B2
公开(公告)日：2023-01-24
申请号：US17562731
申请日：2021-12-27
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： Ciprian Biris , Cem Özgür Gerçek , Lars Helle , Duy Duc Doan , Tune Pedersen
Abstract: This disclosure proposes a topology that integrates a DC chopper into the Modular Multilevel Converter (MMC) cells of a power converter. The integrated DC chopper may include chopper resistors that may also be advantageously integrated into a heat sink for a power module including at least the power transistors of the MMC cell. Embodiments herein also describe a method for using an MMC cell's IGBTs and chopper resistors for providing a safe discharge of both cell capacitors and DC-link capacitors in different operating conditions.
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Patent Agency Ranking
公开(公告)号：US20230013458A1
公开(公告)日：2023-01-19
申请号：US17787905
申请日：2020-12-16
Applicant: VESTAS WIND SYSTEMS A/S
Abstract: Techniques for authenticating and authorising authorizing user access to a component of a power plant within a private network of a renewable power plant having wind turbine generators. One technique includes providing at a local computer system in the private network a list of credentials and authorizations representing a plurality of identifiers and authenticators of users and corresponding access authorizations. The local computer is in direct communication with components of the power plant and is configured to receive a request for access from a user via a computer interface in the component in the private network. If the requested access can be granted by consulting the list of credentials and authorizations, the grant is communicated from the local computer to the computer interface in the component, and in case access cannot be granted, a request for update of the list of credentials and authorizations is communicated from the local computer system to a central computer system outside the private network.
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97.发明申请公开(公告)号：US20230009080A1
公开(公告)日：2023-01-12
申请号：US17782230
申请日：2020-12-11
Applicant: Vestas Wind Systems A/S
Inventor： Brian Jørgensen , Søren Dalsgaard , Peter Bøttcher , Julio Xavier Vianna Neto , Anders Yde Wollesen
Abstract: A method and a device for dampening movement in a multiple rotor (MR) wind turbine located at sea and comprising a tower (2) extending in an upwards direction, a load carrying structure (3, 4) forming a first section (3) and a second section (4), the first and second sections extending in different directions away from the tower (2). To provide efficient dampening of the movement, the method comprises tethering a first body (20) to the first section (3), the first body being at least partly submerged into the sea.
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公开(公告)号：US20230003189A1
公开(公告)日：2023-01-05
申请号：US17783025
申请日：2020-12-04
Applicant: Vestas Wind Systems A/S
Inventor： Jesper Lykkegaard Neubauer , Peter Bøttcher
Abstract: A wind turbine comprising a tower (2) with a tower wall and having at least one nacelle (3) mounted thereon, and a yaw system (1) interconnecting the tower (2) and at least one nacelle (3) is disclosed. The yaw system (1) comprises a yaw claw (4) comprising an upper radially extending part (5), a lower radially extending part (6) and an axially extending part (7) interconnecting the upper radially extending part (5) and the lower radially extending part (6), thereby defining a space. A sliding bearing connection with at least two axial sliding surfaces (9, 10) and at least one radial sliding surface (11) is arranged between the yaw claw (4) and a flange (8) arranged in the space defined by the yaw claw (4). At least one yaw drive (13) comprising a toothed gear (14) is arranged in meshing connection with a toothed yaw ring (12). The axially extending part (7) of the yaw claw (4) and the meshing connection between the toothed gear (14) and the toothed yaw ring (12) are arranged at the same side of the tower wall.
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公开(公告)号：US11542922B2
公开(公告)日：2023-01-03
申请号：US16627465
申请日：2018-06-21
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： Arran Wood , Stephen Buggy , Paul Badger
Abstract: The present invention relates to a method of controlling an electro-thermal heating system in a wind turbine blade, comprising measuring a supply voltage to the electro-thermal heating system, determining a duration of a variable time based enforced off period based on the measured supply voltage, and inserting the variable time based enforced off period between subsequent switching duty cycles that controls the electro-thermal heating system. The present invention also relates to a wind turbine that comprises one or more wind turbine blades wherein each wind turbine blade comprises an electro-thermal heating system and a processor adapted to perform the method.
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公开(公告)号：US20220412321A1
公开(公告)日：2022-12-29
申请号：US17777345
申请日：2020-11-13
Applicant: Vestas Wind Systems A/S
Inventor： Alejandro Albert Martin Heinzmann , Brian Jørgensen
Abstract: A method of retrofitting a wind turbine (10) having a wind turbine tower (12) and a first energy generating unit (14) includes rotating at least a portion of the wind turbine tower (12). The wind turbine tower (12) is secured to a foundation (16) and has a first position on the foundation (16). The method includes rotating at least a portion of the wind turbine tower (12) from the first position to a second position. In the second position, the portion experiences less stress when the wind turbine (10) is operated in the same prevailing wind. The wind turbine tower (12) may have at least two sections (12a, 12b, 12c) and wherein rotating includes rotating one section relative to another section. One section may be secured to a foundation (16). In that case, rotating may or may not include rotating the section secured to the foundation (16). Rotating the tower may occur after the first energy generating unit (14) is removed from the tower and may include rotating the wind turbine tower by an angle from 90°±15° relative to the first position.
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