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    CONTROLLING FLAP LOADING ON A WIND TURBINE BLADE BASED ON PREDICTED FLAP LOADING
    11.
    发明申请
    CONTROLLING FLAP LOADING ON A WIND TURBINE BLADE BASED ON PREDICTED FLAP LOADING 审中-公开

    公开(公告)号：US20200378361A1

    公开(公告)日：2020-12-03

    申请号：US16888982

    申请日：2020-06-01

    Applicant: VESTAS WIND SYSTEMS A/S

    Inventor： Tobias Gybel HOVGAARD ,  Kasper Zinck

    IPC: F03D7/04 ,  F03D7/02

    Abstract: Techniques for controlling loading on a wind turbine blade in the flap-wise direction. A system model has a description of flap loading on the blade and is used to predict flap loading on the blade over a prediction horizon using the system model. A dynamic flap loading limit is determined based on predicted flap loading and a measured flap loading, and a constraint is defined to limit flap loading on the blade based on the dynamic flap loading limit. The predicted flap loading is used in a cost or performance function, and the cost function is optimized subject to the constraint to determine pitch for the blade to control flap loading on the blade. Advantageously, the dynamic limit varies based on discrepancies between predicted and measured flap loading to allow for adaptive back-off from extreme loads prior to such loads building up or being exceeded.

    WIND TURBINE CONTROL SYSTEM COMPRISING IMPROVED UPSAMPLING TECHNIQUE
    12.
    发明申请
    WIND TURBINE CONTROL SYSTEM COMPRISING IMPROVED UPSAMPLING TECHNIQUE 审中-公开

    公开(公告)号：US20200318614A1

    公开(公告)日：2020-10-08

    申请号：US16303850

    申请日：2017-05-22

    Applicant: VESTAS WIND SYSTEMS A/S

    Inventor： Tobias Gybel HOVGAARD ,  Keld HAMMERUM ,  Kasper ZINCK

    IPC: F03D7/04

    Abstract: A wind turbine control unit comprising a control module configured to control an actuator system by outputting a first control signal, wherein the first control signal includes a current control sample value and a predicted control trajectory; the control unit further comprising an upsampling module configured to receive the first control signal from the control module, and to output a second control signal for controlling the actuator system, the second control signal having a higher frequency that the first control signal. The upsampling module calculates the second control signal in dependence on the current control sample value and the predicted control trajectory. The embodiments provide a more accurately reproduced control signal at a higher frequency that is suitable for onward processing which does not suffer from the problems of aliasing and delay that exist with conventional upsampling techniques.

    A CONTROL SYSTEM FOR A POWER PLANT
    15.
    发明申请
    A CONTROL SYSTEM FOR A POWER PLANT 有权

    公开(公告)号：US20220006297A1

    公开(公告)日：2022-01-06

    申请号：US17288852

    申请日：2019-09-25

    Applicant: VESTAS WIND SYSTEMS A/S

    Inventor： Claus Thyge PEDERSEN ,  Tobias Gybel HOVGAARD

    IPC: H02J3/38 ,  H02J3/46 ,  H02J13/00 ,  H02S50/00 ,  G05B13/02 ,  F03D9/00 ,  F03D80/20

    Abstract: A controller for controlling the operation of a power plant, the power plant comprising a wind turbine and a solar power generator, the controller comprising: an input arranged to receive an input signal indicative of an operating parameter of the solar power generator; a shadow detection module arranged to monitor the operating parameter and to detect a shadow at least partially shading the solar power generator, the detected shadow being caused by a blade of the wind turbine; a shadow prediction module arranged to predict at least one subsequent blade shadow in dependence on the detected blade shadow; a command module arranged to determine a command signal for controlling the solar power generator based on the blade shadow prediction; and an output arranged to output the command signal to the solar power generator.

    MODIFYING CONTROL STRATEGY FOR CONTROL OF A WIND TURBINE USING LOAD PROBABILITY AND DESIGN LOAD LIMIT
    16.
    发明申请
    MODIFYING CONTROL STRATEGY FOR CONTROL OF A WIND TURBINE USING LOAD PROBABILITY AND DESIGN LOAD LIMIT 有权

    公开(公告)号：US20210372371A1

    公开(公告)日：2021-12-02

    申请号：US17286806

    申请日：2019-10-09

    Applicant: VESTAS WIND SYSTEMS A/S

    Inventor： Anders Steen NIELSEN ,  Søren Hove SØRENSEN ,  Tobias Gybel HOVGAARD

    IPC: F03D7/04

    Abstract: The present disclosure relates to controlling an operation of a wind turbine. A first plurality of extreme load measures indicative of extreme loads experienced by at least part of the wind turbine during the first period of time are determined and a load probability characteristic is then determined based on a statistical analysis of the distribution of the first plurality of extreme load measures. A control strategy for controlling the operation of the wind turbine is then modified based at least in part on a comparison of the load probability characteristic and a design load limit and the wind turbine is then subsequently controlled in accordance with the modified control strategy for a second period of time.

    MODEL PREDICTIVE CONTROL IN LOCAL SYSTEMS
    17.
    发明申请
    MODEL PREDICTIVE CONTROL IN LOCAL SYSTEMS 审中-公开

    公开(公告)号：US20200291922A1

    公开(公告)日：2020-09-17

    申请号：US16770869

    申请日：2018-12-03

    Applicant: VESTAS WIND SYSTEMS A/S

    Inventor： Tobias Gybel HOVGAARD ,  Jacob Deleuran GRUNNET

    IPC: F03D7/04 ,  G05B13/04

    Abstract: A main computing system maintains and optimizes a predictive control model for an energy system, wherein the main computing system receives state information for the energy system, optimizes the predictive control model, and generates control rules for control of the energy system. The one or more local computing systems, each have a local memory for storing control rules for controlling the associated local state. The main computing system receives local state information and updates control rules, wherein the updated control rules comprise a subset of the control rules generated by the main computing system selected to be appropriate to the local state information received at the main computing system.

    INDIVIDUAL PITCH CONTROL FOR WIND TURBINES
    18.
    发明申请
    INDIVIDUAL PITCH CONTROL FOR WIND TURBINES 审中-公开

    公开(公告)号：US20200271093A1

    公开(公告)日：2020-08-27

    申请号：US16647267

    申请日：2018-09-11

    Applicant: VESTAS WIND SYSTEMS A/S

    Inventor： Jacob Deleuran GRUNNET ,  Tobias Gybel HOVGAARD

    IPC: F03D7/02 ,  F03D7/04

    Abstract: A method of controlling pitch of individual blades in a wind turbine is described, together with a suitable controller. Wind speed is determined as a function of azimuthal angle. Wind speed is then predicted for individual blades over a prediction horizon using this determination of wind speed as a function of azimuthal angle. The predicted wind speed for each individual blade is used in a performance function, which is optimized to control individual blade pitches.

    CONTROL SYSTEM FOR WIND TURBINES FOR REDUCING DISTURBANCES IN AN ELECTRICAL GRID
    19.
    发明申请
    CONTROL SYSTEM FOR WIND TURBINES FOR REDUCING DISTURBANCES IN AN ELECTRICAL GRID 审中-公开

    公开(公告)号：US20190383265A1

    公开(公告)日：2019-12-19

    申请号：US16440451

    申请日：2019-06-28

    Applicant: VESTAS WIND SYSTEMS A/S

    Inventor： Tobias Gybel HOVGAARD ,  Poul Brandt Christensen

    IPC: F03D7/02 ,  F03D9/25 ,  F03D9/00

    Abstract: The present invention relates to a method for controlling a power plant for reducing spectral disturbances in an electrical grid being operative connected to the power plant, the power plant comprising a plant controller, at least one wind turbine and at least one auxiliary energy source, wherein the at least one wind turbine comprises a rotor adapted to drive a power generator via a shaft, wherein the generator is connectable with the electrical grid, and at least one damping controller configured to compensate structural oscillations of the wind turbine by controlling a torque on the shaft, wherein the at least one damping controller is capable of setting a limit of a control action on the shaft, the method comprising the steps of determining disturbance information for the power plant in the form of an electrical disturbance at a point of measurement electrically connected to the power plant, determining set-points for the at least one auxiliary energy source based on the determined disturbance information, and assigning the set-points to the at least one auxiliary energy source in order to counteract at least part of the electrical disturbance at the point of measurement using at least part of an available amount of energy from the at least one auxiliary energy source.

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