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公开(公告)号：US12049867B2
公开(公告)日：2024-07-30
申请号：US17615064
申请日：2020-05-26
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： Jesper Sandberg Thomsen , Ian Couchman , Morten Bro
IPC: F03D7/02
CPC classification number: F03D7/0224 , F03D7/0296 , F05B2270/327 , F05B2270/334 , F05B2270/807
Abstract: The present invention relates to a rotor control system for actuating pitch of pitch adjustable rotor blades of a wind turbine in order to reduce edgewise blade vibrations. The system comprises a pitch actuation unit being arranged to receive a torsional vibration signal and apply a filter to the torsional vibration signal to couple the torsional vibration signal to an edgewise vibration of the rotor blades. An m-blade coordinate transformation, such as the Coleman transformation, is applied to the filtered torsional vibrational signal to obtain pitch modification signals.
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公开(公告)号：US11038400B2
公开(公告)日：2021-06-15
申请号：US16720128
申请日：2019-12-19
Applicant: VESTAS WIND SYSTEMS A/S
Abstract: A method of controlling a wind turbine is provided. The method comprises providing a primary power reference signal and a secondary power reference signal. The primary power reference signal is limited according to a primary signal limit. The secondary power reference signal is limited according to a secondary signal limit. The primary power reference signal and the secondary power reference signal are combined to provide a combined power reference signal, which is provided to a power or torque control system of the wind turbine.
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公开(公告)号：US10982651B2
公开(公告)日：2021-04-20
申请号：US16079772
申请日：2017-02-24
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： Fabio Caponetti , Jesper Sandberg Thomsen , Jacob Deleuran Grunnet , Poul Brandt Christensen
Abstract: A method for damping an oscillation of a tower of a wind turbine is disclosed, wherein a pitch angle of each of the one or more rotor blades is individually adjustable, the method comprising damping the oscillation of the tower by pitching each rotor blade individually according to tower damping pitch control signals, wherein each tower damping pitch control signal comprises a first periodic component, where a first frequency of the first periodic component corresponds to a frequency difference between a tower frequency of the oscillation of the tower and a rotor frequency of a rotation of the rotor, and where a second periodic component has been reduced or removed. A second frequency of the second periodic component corresponds to a frequency sum of the tower frequency and the rotor frequency.
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公开(公告)号：US10968888B2
公开(公告)日：2021-04-06
申请号：US16336015
申请日：2017-09-20
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： Poul Brandt Christensen , Claus Thybo , Jesper Sandberg Thomsen
Abstract: A method for controlling a wind turbine is disclosed, the wind turbine comprising a set of wind turbine blades (1), each wind turbine blade (1) being provided with at least one air deflector (2) being movable between an activated position in which it protrudes from a surface of the wind turbine blade (1) and a de-activated position. The occurrence of an event causing a change in operational conditions is registered, and a new operating state for the wind turbine is determined, the new operating state meeting requirements of the changed operational conditions. The air deflectors (2) of the wind turbine blades (1) and pitch angles of the wind turbines blades (1) are controlled in order to reach the new operating state for the wind turbine, and in such a manner that the control of the pitch angles of the wind turbine blades (1) is performed while taking information regarding the control of the air deflectors (2) into account.
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公开(公告)号：US10958071B2
公开(公告)日：2021-03-23
申请号：US16956923
申请日：2018-11-20
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： Manoj Gupta , Ravi Kumar , Janakiraman Sivasankaran , Thomas Schmidt Grau , Martin Ansbjerg Kjær , Kouroush Nayebi , John Godsk Nielsen , Jesper Sandberg Thomsen
Abstract: A method for operating a renewable energy power plant comprising a plurality of renewable energy generators. The method comprises: identifying a predetermined condition of the renewable energy power plant, of the grid, or of the connection between the renewable energy power plant and the grid, the predetermined condition indicating a weak grid interconnection between the renewable energy power plant and the grid; and controlling each renewable energy generator in an adaptive active power mode in response to recovery of the grid from a voltage deviation. The adaptive active power mode comprises: determining a thermal capacity of a chopper resistor of the renewable energy generator; calculating, based upon the determined thermal capacity, a limit level of rate of change of active power output that may be implemented by the renewable energy generator; and operating the renewable energy generator to output active power at the calculated rate of change limit level.
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Patent Agency Ranking
公开(公告)号：US10724499B2
公开(公告)日：2020-07-28
申请号：US16060104
申请日：2016-12-01
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： Kouroush Nayebi , Jacob Deleuran Grunnet , Jesper Sandberg Thomsen
Abstract: There is presented a method for controlling a plurality of wind turbines comprising measuring wind turbine operation parameters in a model relating a plurality of wind turbine parameters to each other, estimating one wind turbine operation parameter value based on the model and the measured remaining wind turbine operation parameter values, providing a reliability parameter value for each wind turbine based on a difference value, said difference value being a difference between the estimated wind turbine operation parameter value, and the measured wind turbine operation parameter value corresponding to the wind turbine operation parameter for which the estimated wind turbine operation parameter value is provided, and controlling the plurality of wind turbines based on the corresponding plurality of reliability parameter values.
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公开(公告)号：US11754043B2
公开(公告)日：2023-09-12
申请号：US17056395
申请日：2019-05-08
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： Keld Hammerum , Jesper Sandberg Thomsen
CPC classification number: F03D7/0296 , F03D7/0224 , F03D7/042 , F05B2240/21 , F05B2270/328 , F05B2270/334 , F05B2270/404
Abstract: Controlling a wind turbine by obtaining a movement signal indicative of a vibrational movement of a wind turbine tower is described. An actuator signal is determined based on the movement signal, the actuator signal being determined to produce a desired force to counteract the vibrational movement of the tower. A pitch reference offset signal for each one of a plurality of pitch-adjustable rotor blades is determined based on the actuator signal. An integration is then applied to the pitch reference offset signals to determine modified pitch reference offset signals based on the integrated pitch reference offset signals. A pitch signal for each of the blades is determined based on the modified pitch reference offset signals, the pitch signals being arranged to adjust the blades to provide the force that counteracts the vibrational movement of the tower.
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公开(公告)号：US11365718B2
公开(公告)日：2022-06-21
申请号：US16619691
申请日：2018-05-30
Applicant: VESTAS WIND SYSTEMS A/S
Abstract: Embodiments are generally directed to techniques for operating a wind turbine of a wind power plant. An associated method comprises determining, using one or more sensors of the wind turbine, a first power production level of the wind turbine; determining, during an unconstrained operation of the wind turbine, one or more available power correction factors using the first power production level; determining, using one or more wind power parameters applied to a predefined model for estimating an available power of the wind turbine, an estimated available power value; adjusting the estimated available power value using the one or more available power correction factors to produce the available power value; and controlling, using the available power value, the wind turbine to produce a second power production level.
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公开(公告)号：US11293401B2
公开(公告)日：2022-04-05
申请号：US16954178
申请日：2018-12-13
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： Fabio Caponetti , Jesper Sandberg Thomsen
Abstract: A method for wind turbine tower damping is disclosed, as well as an associated controller and wind turbine. The method comprises generating, using at least a first sensor signal, a first pitch reference signal for one or more rotor blades of a wind turbine during partial load operation. The method further comprises determining, using at least a second sensor signal, dynamic state information for a tower of the wind turbine. The method further comprises generating a second pitch reference signal by adapting the first pitch reference signal using the dynamic state information. The method further comprises selecting a maximum pitch reference signal from the second pitch reference signal and a saturation pitch reference signal. The method further comprises communicating the maximum pitch reference signal to control a pitch of the one or more rotor blades.
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公开(公告)号：US11215163B2
公开(公告)日：2022-01-04
申请号：US16614839
申请日：2018-05-15
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： Fabio Caponetti , Jesper Sandberg Thomsen , Poul Brandt Christensen
Abstract: The present invention relates to control of a wind turbine where nacelle vibration is reduced by use of blade pitching or generator torque modulation. The nacelle vibrations are reduced based on a position signal of the nacelle. An actuator signal is determined based on the position signal and applied to the actuator capable of reducing nacelle vibration. The actuator signal is gain adjusted based on a separation between the rotor frequency and tower vibration frequency.
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