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公开(公告)号：US11053917B2
公开(公告)日：2021-07-06
申请号：US15578176
申请日：2016-05-23
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： Kouroush Nayebi , Mu Wei , Dumitru-Mihai Valcan , Jesper Sandberg Thomsen
Abstract: A method and control arrangement are disclosed for controlling power output of a wind power plant (WPP) including a plurality of wind turbine generators (WTGs). The method includes determining that overboosting is required for the WPP to meet a power demand at the WPP, and determining, for at least a first WTG of the plurality of WTGs, a corresponding amount of overboost capacity. The method further includes generating, based on the determined amount of overboost capacity, control signals causing the first WTG to increase its power output through overboosting to thereby fulfill at least a portion of the power demand.
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公开(公告)号：US20200011296A1
公开(公告)日：2020-01-09
申请号：US16484745
申请日：2018-01-30
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： Fabio CAPONETTI , Jesper Sandberg Thomsen
Abstract: The present invention relates to control of a wind turbine where nacelle vibration is reduced by use of blade pitching. The nacelle vibrations are reduced based on a position signal of the nacelle. A pitch signal is determined based on the position signal and applied to the pitch-adjustable rotor blades in order to reduce nacelle vibration.
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Patent Agency Ranking
公开(公告)号：US10465659B2
公开(公告)日：2019-11-05
申请号：US15759150
申请日：2016-09-27
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： Keld Hammerum , Martin Ansbjerg Kjær , Jesper Sandberg Thomsen , Eik Herbsleb , Tobias Gybel Hovgaard
IPC: F03D7/04 , G05B19/042 , G05B21/02 , G05B13/04
Abstract: The present disclosure relates to a control system for a wind turbine comprising more controllers and where at least some of the controllers operate at different sample frequencies. The control system comprises at least two controller units, a first controller (10) for determining an operational value (OV) of a sub-system and a second controller (20) for the sub-system. The second controller operates at a higher sample frequency than the first controller. It is disclosed that a faster reaction to a received demand value (V1), received for controlling the sub-system, can be obtained by setting the operational value (OV) of the sub-system as the sum of an internal operational value (V5) and a difference value (V4).
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公开(公告)号：US10364798B2
公开(公告)日：2019-07-30
申请号：US15518992
申请日：2015-10-08
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： Martin Ansbjerg Kjær , Fabio Caponetti , Ian Couchman , Jesper Sandberg Thomsen , Thomas Krüger , Jorge Martinez Garcia
Abstract: The invention relates to a method for wind turbine generators for reducing electrical disturbances in the form of power variations which are caused by damping controllers arranged the compensate structural oscillations by inducing shaft torque variations. The shaft torque variations are generated by imposing corresponding variations in a generator set-point, e.g. a power or torque set-point. Variations in the generator set-point cause undesired variations in the power injected to the grid by one or more wind turbine generators. According to an embodiment of the invention the electrical disturbances may be reduced by limiting a damping controller's control action. The amount of limitation or restriction of the damping controller may be determined on basis on electrical disturbance information determined from power measured e.g. at a location on the grid.
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公开(公告)号：US10364797B2
公开(公告)日：2019-07-30
申请号：US15547199
申请日：2016-01-27
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： Fabio Caponetti , Jesper Sandberg Thomsen , Jacob Deleuran Grunnet
Abstract: The invention relates to a method for controlling a wind turbine in partial and full load. In order to avoid disadvantages of switching between partial and full load controllers, the wind turbine control system is configured so that both the partial and full load controller provides control action during partial and full load. For that purpose, the partial and full load controllers are configured with variable gains, wherein gain scheduling is performed so that the gain of partial load controller is larger than the gain of the full load controller during partial load and vice verso so that the gain of the full load controller is larger than the gain of the partial load controller during full load.
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公开(公告)号：US10273938B2
公开(公告)日：2019-04-30
申请号：US15735524
申请日：2016-06-09
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： Martin Ansbjerg Kjær , Jesper Sandberg Thomsen , Jacob Krogh Kristoffersen , Jacob Deleuran Grunnet
Abstract: The invention relates to a control system for a wind turbine. The wind turbine comprises a power generator configured to generate power dependent on a power request. The control system comprises a ramp rate limiter configured to restrict a rate of change of the power request according to a rate of change limit and configured to determine the rate of change limit dependent on a power difference between the power request and an estimated available wind power.
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公开(公告)号：US09683551B2
公开(公告)日：2017-06-20
申请号：US14369524
申请日：2012-12-13
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： Asger Svenning Andersen , Jesper Sandberg Thomsen , Jacob Krogh Kristoffersen , Ib Svend Olesen , Jonas Romblad
CPC classification number: F03D7/0256 , F03D7/0224 , F03D7/042 , F03D7/046 , F03D17/00 , Y02E10/723
Abstract: The rotor blades of a wind turbine each have a plurality of fiber-optic pressure variation sensors which can detect the onset of a stall condition. The output of the stall condition sensors is input to a stall count circuit which increases a stall count signal each time a stall indication is received. The stall count signal is decayed exponentially over time and the current signal is summed with the decayed signal from a previous sampling period to form a value from which a stall margin is determined. An λ:θ curve of tip speed to wind speed ratio λ against pitch angle reference θ is then determined from the stall margin.
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