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公开(公告)号：US20220311354A1
公开(公告)日：2022-09-29
申请号：US17634959
申请日：2020-08-12
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： Cem Özgür GERÇEK , Lars HELLE , Ciprian BIRIS
IPC: H02M7/483 , H02M1/32 , H02M7/5395 , H02J3/38
Abstract: This disclosure proposes procedures and systems for discharging system capacitors and de-energizing power transmission systems having Modular Multilevel Converter (MMC) topologies by intelligent control of MMC cell components including configuration of bypass and insert switches using integrated DC choppers to effectively de-energize MMC cell capacitors and/or DC-link capacitors under operating conditions such as after a normal stop, for protection against over-voltages, dumping turbine energy, and under certain hardware fault conditions.
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公开(公告)号：US20220311223A1
公开(公告)日：2022-09-29
申请号：US17700246
申请日：2022-03-21
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： Luis Miguel CALHAU GONÇALVES , Kenneth G. HANSEN
IPC: H02B13/025 , H02B1/56 , H05K5/06 , F03D80/80 , H02J3/38
Abstract: A wind turbine with an electric converter module having a first section forming a first enclosure capable of withstanding a pressure from an arc flash inside the first enclosure. The first enclosure houses an electric protective device electrically connected between a first electric conductor and the second electric conductor. A second section is arranged adjacent to the second side wall of the first section, and forms a second enclosure housing an electric converter system connected to the second electric conductor and a third electric conductor to allow conversion of electric power from the third electric conductor to electric power to the second electric conductor. A door in the second section serves to allow service personnel to access components of the electric converter system from outside the enclosure.
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公开(公告)号：US20220307481A1
公开(公告)日：2022-09-29
申请号：US17641969
申请日：2020-10-02
Applicant: Vestas Wind Systems A/S
Inventor： Lars Langvardt Krogh
IPC: F03D80/00 , F03D15/00 , F16J15/3204
Abstract: Apparatus comprising a first shaft and a second shaft supported in a substantially concentric relationship so that they are able to rotate relative to one another about a rotational axis (R); wherein one of the first and second shafts passes through a bore defined in the other of the first and second shafts; a seal arrangement between the first and second shafts, said seal arrangement being locked from rotational movement relative to said first shaft; wherein the seal arrangement comprises a first portion that is rotatably mounted on the second shaft by a bearing and a second portion that is configured to seal against a miming surface defined by the second shaft. Advantageously, since the seal arrangement is rotatably mounted on the same shaft against which it forms a seal, the sealing arrangement accommodates for alignment errors between the first and second shafts.
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公开(公告)号：US20220307471A1
公开(公告)日：2022-09-29
申请号：US17616116
申请日：2020-05-04
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： Mads Rajczyk SKJELMOSE , Steve JESSEN
IPC: F03D7/02 , H02J3/38 , H02J3/46 , G05B19/042 , F03D7/04
Abstract: The invention relates to a method for controlling power generation from a power plant which comprises power generating units such as wind turbine generators. The power generating units are controllable to produce power dependent on individual power set-points. The method comprises steps of obtaining desired target power set-points for one or more prioritized power generating units, determining final target power set-points for the one or more prioritized power generating units based on the target power set-points and an available power adjustment margin of the power plant which is available for adjustment of the power set-points of the one or more prioritized power generating units, and dispatching the final target power set-points to the prioritized power generating units.
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公开(公告)号：US11448187B2
公开(公告)日：2022-09-20
申请号：US16443195
申请日：2019-06-17
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： Germán Claudio Tarnowski
Abstract: The present invention relates to a power system having a plurality wind turbine generators and a power plant controller arranged to communicate with the plurality of wind turbines generators, where each of the plurality of wind turbine generator being related to a wind turbine controller, the wind turbine controller being arranged to control an active power output in its related wind turbine generator according to an active power set point received from the wind power plant controller; a first subset of wind turbine generators operating at an active power output unrestricted of the active power set point; and a second subset of wind turbine generators operating according to an active power set point; and wherein the wind power plant controller communicates the active power set point, in accordance with the active power output of the first subset of the plurality of wind turbines generators, so as to reduce active power fluctuation of the aggregated active power output of the first and second subset of the plurality of wind turbines generators. The present invention also relates to method accordingly.
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Patent Agency Ranking
公开(公告)号：US11448182B2
公开(公告)日：2022-09-20
申请号：US16498107
申请日：2018-04-04
Applicant: Vestas Wind Systems A/S
Inventor： Jonathan Smith , Andrew Hedges
Abstract: A method of making a wind turbine blade is described. The wind turbine blade comprises first and second half shells joined together and a shear web bonded between inner surfaces of the respective half shells. The blade is made in a one-stage join up process, which involves supporting the half shells in respective mould halves, and arranging one of the half shells on top of the other half shell with the shear web arranged between the two half shells. Adhesive is provided between the shear web and the inner surfaces of the respective half shells. During the join-up process, the shear web is supported by stabilisers. The use of stabilisers avoids the need for a jig to support the shear web. Stabilisers attached to an inboard end of the shear web may remain accessible after the join-up and can be removed.
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公开(公告)号：US20220290648A1
公开(公告)日：2022-09-15
申请号：US17828110
申请日：2022-05-31
Applicant: Vestas Wind Systems A/S
Inventor： Mark Hancock , Frank Hoelgaard Hahn , Chris Payne
Abstract: A reinforcing structure for a wind turbine blade is in the form of an elongate stack of layers of pultruded fibrous composite strips supported within a U-shaped channel. The length of each layer is slightly different to create a taper at the ends of the stack; the centre of the stack has five layers, and each end has a single layer. The ends of each layer are chamfered, and the stack is coated with a thin flexible pultruded fibrous composite strip extending the full length of the stack. The reinforcing structure extends along a curved path within the outer shell of the blade. The regions of the outer shell of the blade on either side of the reinforcing structure are filled with structural foam, and the reinforcing structure and the foam are both sandwiched between an inner skin and an outer skin.
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公开(公告)号：US11441544B2
公开(公告)日：2022-09-13
申请号：US17059763
申请日：2019-06-13
Applicant: Vestas Wind Systems A/S
Inventor： Jesper Rømer Hansen
Abstract: A method for operating at least two floating offshore wind turbines (1) is disclosed. The wind turbines (1) are operated at respective first operating positions (7), and a previous and/or a future expected wear impact on each wind turbine (1) is estimated. At least one wind turbine (1) to be relocated to a respective second operating position (9) is identified, based on the estimated wear impact. The identified wind turbines (1) are moved to respective second operating position (9) and operated there.
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公开(公告)号：US11434868B2
公开(公告)日：2022-09-06
申请号：US17263227
申请日：2019-07-25
Applicant: Vestas Wind Systems A/S
Inventor： Gunnar K. Storgaard Pedersen , Christian Skov Frederiksen , Anton Bech
Abstract: A method of installing a rotor on a nacelle (44) on a wind turbine generally includes providing a rotor hub counterweight assembly (10, 10′) which are rotated and lifted from a downtower location to an uptower location at which wind turbine blades (50, 52, 54) are progressively attached and the counterweights (14, 16), (14′, 16′) are progressively removed. The rotor hub and counterweight assembly (10, 10′) for use when installing a rotor on a wind turbine (46) generally includes a rotor hub (12) having first, second and third flanges (18, 20, 22), a first counterweight (14, 14′), a second counterweight (16, 16′), and a lifting apparatus connecting member (26, 26′). A lifting apparatus connecting member (26) is configured with at least two connection points (60, 62) being configured for allowing at least two of three operations including installation, rotating and lifting the rotor hub (12), and removal of the lifting apparatus connecting member (26′).
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公开(公告)号：US20220278604A1
公开(公告)日：2022-09-01
申请号：US17762326
申请日：2020-09-17
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： Masoud PARKHOU , Lars HELLE , Cem Özgür GERÇEK
Abstract: According to embodiments described herein a Modular Multilevel Converter (MMC) is pre-charged by: driving a bypass current from an auxiliary power source through a plurality of bypass switches included in a corresponding plurality of cells; in response to a summed voltage across a plurality of cell capacitors included in the plurality of cells satisfying a drive threshold, driving an insert current through a plurality of insert switches included in the plurality of cells; and in response to a voltage across a Direct Current (DC) link capacitor satisfying a pre-charge threshold when driving the insert current, opening a circuit breaker connecting the auxiliary power source with the plurality of cells and connecting a generator with external power line rails between which the DC link capacitor is connected.
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