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公开(公告)号：US11300101B2
公开(公告)日：2022-04-12
申请号：US16440451
申请日：2019-06-28
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： Tobias Gybel Hovgaard , Poul Brandt Christensen
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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公开(公告)号：US11125209B2
公开(公告)日：2021-09-21
申请号：US16097675
申请日：2017-05-02
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： Martin Ansbjerg Kjær , Tobias Gybel Hovgaard
Abstract: A wind turbine system comprising a nacelle mounted on a tower, a rotor having a plurality of blades and a boundary layer control system configured to control airflow through blade surface openings in each of the blades. The wind turbine system includes a control system configured to: monitor an operational speed parameter of the wind turbine, and activate the boundary layer control system if it is determined that the operational speed parameter exceeds a predetermined speed parameter threshold; monitor tower motion and to activate the boundary layer control system based on a determination of excessive tower motion; monitor for a wind turbine shutdown condition, activate the boundary layer control system if it is determined that the shutdown condition has been identified; monitor the aerodynamic loads on the blades, and activate the boundary layer control system based on a determination of excessive blade loads.
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公开(公告)号：US11118568B2
公开(公告)日：2021-09-14
申请号：US16296843
申请日：2019-03-08
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： Keld Hammerum , Tobias Gybel Hovgaard
Abstract: The present invention relates to control of wind turbines in a situation where a fault condition is detected. Control of a wind turbine is described where a control trajectory and a safe-mode trajectory are calculated based on the current operational state of the wind turbine. If the fault condition is detected the wind turbine is controlled using the safe-mode trajectory, otherwise, the normal operation of the wind turbine is continued where the wind turbine is controlled using the control trajectory.
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公开(公告)号：US11053918B2
公开(公告)日：2021-07-06
申请号：US16303850
申请日：2017-05-22
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： Tobias Gybel Hovgaard , Keld Hammerum , Kasper Zinck
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.
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公开(公告)号：US20200340450A1
公开(公告)日：2020-10-29
申请号：US16855159
申请日：2020-04-22
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： Jacob Deleuran GRUNNET , Tobias Gybel Hovgaard , Jan-Willem Van Wingerden , Sebastiaan Mulders
Abstract: The invention provides a method for controlling rotor speed of a wind turbine. The method includes defining a system model describing resonance dynamics of a wind turbine component, such as a wind turbine tower, where the system model has a nonlinear input term, e.g. a periodic forcing term. The method includes applying a transform to the system model to obtain a transformed model for response oscillation amplitude of the wind turbine component, where the transformed model has a linear input term. The method includes defining a wind turbine model describing dynamics of the wind turbine, and including the transformed model. A model-based control algorithm, e.g. model predictive control, is applied using the wind turbine model to determine at least one control output, e.g. generator torque, and the control output is used to control rotor speed of the wind turbine. Advantageously, such a method allows the effect of resonance of a wind turbine component to be included in a model-based control setup for a wind turbine as the transformed model allows for efficient on-line, real time solving of the wind turbine model.
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Patent Agency Ranking
公开(公告)号：US20190085823A1
公开(公告)日：2019-03-21
申请号：US16088268
申请日：2017-04-04
Applicant: Vestas Wind Systems A/S
Inventor： Tobias Gybel Hovgaard , Johnny Nielsen , Peter Fogh Odgaard
CPC classification number: F03D7/0224 , F03D1/00 , F03D7/0272 , F03D7/0296 , F03D7/04 , F03D13/20 , F03D17/00 , F05B2220/30 , F05B2240/221 , F05B2240/30 , F05B2240/912 , F05B2260/71 , F05B2260/74 , F05B2260/80 , F05B2260/821 , F05B2260/96 , F05B2270/1032 , F05B2270/1033 , F05B2270/20 , F05B2270/304 , F05B2270/334 , F05B2270/335 , F05B2270/402 , F05B2270/807 , G05B17/02 , Y02E10/723 , Y02E10/728
Abstract: The invention relates to control of a wind turbine comprising a plurality of multi-axial accelerometers mounted at different positions in the nacelle and/or in a top portion of the tower. The position and orientation of each accelerometer as mounted is obtained, accelerations in at least two different directions by each accelerometer are measured during operation of the wind turbine. From a number of predetermined mode shapes for the movement of the wind turbine is then determined an absolute position of at least one of the accelerometers during operation of the wind turbine based on the measured accelerations, the mount position and orientation of each accelerometer and the pre-determined mode shapes. Hereby a more precise absolute position during operation is obtained which can be used in the controlling of the turbine.
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17.发明授权公开(公告)号：US12123400B2
公开(公告)日：2024-10-22
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
CPC classification number: F03D7/046 , F03D7/045 , F03D7/047 , F03D7/048 , F03D17/011 , F03D17/028 , F03D17/034 , F05B2270/331
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.
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公开(公告)号：US11692527B2
公开(公告)日：2023-07-04
申请号：US17142139
申请日：2021-01-05
Applicant: VESTAS WIND SYSTEMS A/S
CPC classification number: F03D7/045 , F03D7/0224 , F05B2260/8211 , F05B2260/84 , F05B2270/20 , F05B2270/404
Abstract: The invention provides a method for controlling a wind turbine, including predicting behaviour of one or more wind turbine components such as a wind turbine tower over a prediction horizon using a wind turbine model that describes dynamics of the one or more wind turbine components or states. The method includes determining behavioural constraints associated with operation of the wind turbine, wherein the behavioural constraints are based on operational parameters of the wind turbine such as operating conditions, e.g. wind speed. The method includes using the predicted behaviour of the one or more wind turbine components in a cost function, and optimising the cost function subject to the determined behavioural constraints to determine at least one control output, such as blade pitch control or generator speed control, for controlling operation of the wind turbine.
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公开(公告)号：US11661920B2
公开(公告)日：2023-05-30
申请号：US17338443
申请日：2021-06-03
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： Tobias Gybel Hovgaard , Keld Hammerum , Kasper Zinck
CPC classification number: F03D7/045 , F03D7/0224 , F03D7/047 , F05B2270/328 , F05B2270/404 , F05B2270/803 , G05B13/048 , G05B2219/2619
Abstract: A wind turbine control unit includes an upsampling module that receives a first control signal that includes a current control sample value and a predicted control trajectory. The upsampling module also calculates a second control signal in dependence on the current control sample value and the predicted control trajectory. The second control signal has a higher frequency than the first control signal. The upsampling module further outputs the second control signal for controlling an actuator.
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公开(公告)号：US11415104B2
公开(公告)日：2022-08-16
申请号：US16545439
申请日：2019-08-20
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： Anders Steen Nielsen , Tobias Gybel Hovgaard , Jacob Deleuran Grunnet
Abstract: A control system and method of control are disclosed. A model predictive control, MPC, unit is configured to determine a control signal for controlling an operation of the wind turbine based at least in part on a cost function comprising a wear cost relating to one or more types of wear of the winding turbine, and a corresponding cost weighting, which defines a relative weighting of the wear cost in the cost function. A weighting determination unit is configured to receive a reference signal comprising a target wear, receive a feedback signal comprising a wear measure of the wind turbine, and determine, based at least in part on a difference between the target wear and the wear measure, a weighting adjustment for at least part of the cost weighting of the cost function. The MPC unit then sets the cost weighting based at least in part on the weighting adjustment.
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