公开(公告)号：WO2021143991A1

公开(公告)日：2021-07-22

申请号：PCT/DK2021/050012

申请日：2021-01-15

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： CAPONETTI, Fabio ,  MARTINS, Andre Brandao

IPC: F03D7/02 ,  F03D7/04 ,  F03D7/0224 ,  F03D7/0264 ,  F03D7/0276 ,  F03D7/046 ,  F05B2270/101 ,  F05B2270/327

Abstract: A method of operating a wind turbine generator (10) comprising a plurality of blades (12), the method comprising iterating the following steps: comparing an indicated rotor speed with a rotor speed target to determine a rotor speed error; generating a modified rotor speed error by applying a control factor to the rotor speed error; controlling the pitch angle of the blades (12) via a pitch control system in accordance with the modified speed error; and altering the control factor in dependence on a size of the indicated rotor speed.

公开(公告)号：WO2021143990A1

公开(公告)日：2021-07-22

申请号：PCT/DK2021/050007

申请日：2021-01-12

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： NETO, Julio Xavier Vianna ,  DALSGAARD, Søren ,  COUCHMAN, Ian ,  SOWMAN, Jon

IPC: F03D1/02 ,  F03D7/02 ,  F03D7/0224 ,  F03D7/0296 ,  F05B2270/807

Abstract: Embodiments herein describe in-plane vibration damping techniques for MR turbines. The MR turbines can include arms that extend from a common tower and support multiple rotors. Because the rotors are disposed laterally away from the tower, side-to-side motion of the tower causes the rotors to have an angled trajectory that includes both lateral and vertical displacement. In addition, a rotor disposed on one side of the tower in MR turbine can have a very different trajectory than a rotor disposed on the opposite side of the tower. To account for the vertical displacement and the different trajectories, in one embodiment, a controller can use different phase offsets for each rotor when calculating pitch offsets for performing in-plane vibration damping. In another embodiment, the controller can use both the lateral and vertical accelerations of the rotors to identify the pitch offsets for the rotors to perform in-plane vibration damping.

公开(公告)号：WO2021139861A1

公开(公告)日：2021-07-15

申请号：PCT/DK2021/050001

申请日：2021-01-05

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： STEELE, David ,  KROGH, Jens Steen

IPC: F03D7/04 ,  F03D1/02 ,  G05B15/02 ,  F03D7/047 ,  G05B2219/2619

Abstract: A control network (54) for a wind turbine system (2), the wind turbine system (2) comprising multiple rotor-nacelle assemblies (6) mounted on a support structure (4), the control network (54) comprising: a respective local network (48) associated with each rotor-nacelle assembly (6), each local network (48) comprising multiple nodes (50, 52); a central network (22) that is connected to each local network (48), the central network (22) comprising multiple nodes (24, 26); and a synchronisation device that synchronises data transmission throughout the control network (54).

公开(公告)号：WO2021129908A1

公开(公告)日：2021-07-01

申请号：PCT/DK2020/050360

申请日：2020-12-14

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： GUPTA, Mranal ,  COSTA GONCALVES SILVA CRUZ, Luis Daniel ,  MADSEN, Kaj Dam

IPC: G10K11/175 ,  F03D7/02 ,  F03D7/0296 ,  F05B2270/333 ,  G10K11/1752

Abstract: A method of masking tonal noise from a wind turbine, the method comprising: obtaining one or more noise characteristics; determining one or more masking performance variables for multiple reference spectra on the basis of the one or more noise 5 characteristics, wherein the reference spectra have different spectral shapes; selecting one or more of the reference spectra on the basis of their one or more masking performance variables; and generating masking noise which masks the tonal noise, wherein a spectral shape of the masking noise is generated on the basis of the selected one or more reference spectra. The invention enables an improved masking 10 performance by tailoring the spectral shape of the masking noise on the basis of one or more masking performance variables.

公开(公告)号：WO2021121512A1

公开(公告)日：2021-06-24

申请号：PCT/DK2020/050373

申请日：2020-12-17

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： VASILJEV, Sergei A. ,  DROZDOV, Pavel

IPC: F03D1/06 ,  F03D1/0675

Abstract: A method of preparing a wind turbine blade, comprising: removing at least a portion of a layer of material covering a region of a metallic part of the wind turbine blade from the wind turbine blade, applying a metal salt to the metallic part, the metal salt being arranged to oxidise a metal of the metallic part, such that the metal salt and the metal of the metallic part react and a new compound is formed on the metallic part.

公开(公告)号：WO2021121503A1

公开(公告)日：2021-06-24

申请号：PCT/DK2020/050357

申请日：2020-12-14

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： NIELSEN, Thomas S. Bjertrup ,  DALSGAARD, Søren

IPC: F03D7/02 ,  F03D7/0236 ,  F03D7/024 ,  F03D7/0296 ,  F05B2240/2022 ,  F05B2270/334

Abstract: The invention relates to method for damping tower oscillations of a wind turbine with a variable rotor area, the wind turbine comprises a tower, a rotor with one or more rotor blades which are arranged hinged at an adjustable pivot angle, where the pivot angle is adjustable dependent on a variable pivot force or pivot moment provided by a pivot actuator, the method comprises - detecting a tower oscillation, and - dependent on the detected tower oscillation, decreasing or increasing the pivot angle to achieve a reduction of the detected oscillation.

公开(公告)号：WO2021121500A1

公开(公告)日：2021-06-24

申请号：PCT/DK2020/050351

申请日：2020-12-11

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： NETO, Julio Xavier Vianna ,  BAUN, Torben Ladegaard ,  NEUBAUER, Jesper Lykkegaard ,  JØRGENSEN, Brian

IPC: F03D1/02 ,  F03D13/10 ,  F05B2240/917

Abstract: A method of preventing nacelle drop in a multiple rotor (MR) wind turbine during mounting of a nacelle to the MR wind turbine, the MR wind turbine 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 reduce the impact of a nacelle drop and therefore an abrupt change in the loading of the load carrying structure, the method comprises attaching at least one tension wire (20, 30, 60, 61) to one of the first section (3) and second section (4) such that vertical movement of an interface portion of the first section is reduced by the at least one tension wire, mounting the nacelle (5) to the first section (3), and subsequently removing the at least one tension wire (20, 30, 60, 61).

公开(公告)号：WO2021121496A1

公开(公告)日：2021-06-24

申请号：PCT/DK2020/050345

申请日：2020-12-04

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： NEUBAUER, Jesper Lykkegaard ,  BØTTCHER, Peter

IPC: F03D7/02 ,  F03D80/70 ,  F03D7/0204 ,  F05B2270/329

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.

公开(公告)号：WO2021115541A1

公开(公告)日：2021-06-17

申请号：PCT/DK2020/050340

申请日：2020-12-01

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： DINCAN, Catalin Gabriel ,  GERÇEK, Cem Özgür ,  HELLE, Lars ,  KJÆR, Philip Carne

IPC: B60L53/52 ,  B60L53/53 ,  B60L53/57 ,  F03D9/11 ,  H02J7/34 ,  B60L53/10

Abstract: An off grid electric system for charging electric vehicles. A plurality of wind turbines (WT1, WT2, WT3, WT4) serve to generate respective electric power outputs, and an electric storage system (BTS), e.g. Li-ion batteries, is arranged to store electric power generated by the wind turbines. A plurality of electric vehicle charging stations (VC1, VC2, VC3, VC4) are connected to the plurality of wind turbines, and the electric storage system by means of an off grid electric power network (CN), so as to allow each charging station to charge at least one electric vehicle (EV). In preferred embodiments, the wind turbines have permanent magnet generators that generate Medium Voltage AC outputs, e.g. 4-8 kV, and generate Medium Voltage DC outputs by means of a DC-DC converter placed down-tower. In some embodiments the DC-DC converter is placed in a kiosk near the wind turbine, whereas the EV charging stations are placed 25-500 m further away from the wind turbine. Such off grid wind turbine systems are feasible for e.g. charging of large fleets of EVs, especially in embodiments where a weather forecast is used to control electric power distribution between electric storage and wind turbines in response to a prediction of available wind turbine electric power.

公开(公告)号：WO2021104600A1

公开(公告)日：2021-06-03

申请号：PCT/DK2020/050338

申请日：2020-11-27

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： BECH, Anton

IPC: F03D1/06

Abstract: In a first aspect of the invention there is provided a modular wind turbine blade. The modular wind turbine blade comprises first and second blade modules configured for connection end to end and a plurality of mutually spaced first inserts which each have a fixed end integrated with a connection end of the first blade module, and a free end which projects from the connection end of the first blade module. The free ends have a profiled contour. The modular wind turbine blade further comprises a plurality of mutually spaced second inserts which each have a fixed end integrated with the connection end of the second blade module and a free end which projects from the connection end of the second blade module. The free ends have a profiled contour. The free ends of the first inserts abut the free ends of the second inserts when the first and second blade modules are arranged end to end, and one or more connection cavities are defined between the profiled contours of adjacent pairs of abutting inserts. The modular wind turbine blade further comprises at least one connecting element configured for insertion into a respective connection cavity to connect the first and second blade modules together. The at least one connecting element has a first end and a second end. The first end has a profile configured to intermesh with the profiled contours of adjacent first inserts, and the second end has a profile configured to intermesh with the profiled contours of adjacent second inserts.