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公开(公告)号：US20170226988A1
公开(公告)日：2017-08-10
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
CPC classification number: F03D7/0284 , F03D7/0296 , F03D7/048 , F05B2260/96 , F05B2260/964 , F05B2270/334 , F05B2270/337 , H02K7/183 , H02P9/04 , Y02E10/723
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：US20240410333A1
公开(公告)日：2024-12-12
申请号：US18699433
申请日：2022-10-07
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： Jesper Sandberg THOMSEN , Alexander Duncan GILES , Ian COUCHMAN
Abstract: A method of damping motion of a wind turbine, the wind turbine comprising a rotor and a floating platform. A motion signal is generated which is indicative of a motion of the wind turbine. A wind direction signal is generated which is indicative of a wind direction relative to the floating platform. A damping signal is generated on the basis of the motion signal and the wind direction signal, and the motion of the wind turbine is damped on the basis of the damping signal, for instance by adjusting the pitch of the rotor blades. A phase of the damping signal may be controlled on the basis of the wind direction signal.
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公开(公告)号：US20240254964A1
公开(公告)日：2024-08-01
申请号：US18561584
申请日：2022-05-16
Applicant: VESTAS WIND SYSTEMS A/S
CPC classification number: F03D7/0224 , F03D80/821 , F05B2260/70 , F05B2270/331
Abstract: The present invention relates to pitch actuation of pitch-adjustable rotor blades of a three-bladed wind turbine in a situation where one blade load sensor is unavailable. Based on blade load signals and an availability signal for each of the blade load signals, combined load signals are constructed based on the available blade load signals. The combined load signals are determined based on application of a high pass filter to the blade load signals and a transform of the blade load signals to an intermediate coordinate frame, wherein, in the transform, the unavailable blade load signal is replaced with an estimated signal. A control action is performed using the combined load signals, and the resulting pitch modification signals are applied to the pitch actuator.
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公开(公告)号：US20240159216A1
公开(公告)日：2024-05-16
申请号：US18499397
申请日：2023-11-01
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： Sebastiaan MULDERS , Fabio SPAGNOLO , Jesper Sandberg THOMSEN , Julio Xavier Vianna NETO , Jan-Willem VAN WINGERDEN , Livia BRANDETTI
CPC classification number: F03D7/0224 , F03D1/00 , F03D7/042 , F05B2220/30 , F05B2270/101 , F05B2270/32
Abstract: The present invention relates to controlling a wind turbine with a scaled power coefficient where the scaled power coefficient is determined in an adjustment process. In particular is disclosed control of a wind turbine in a partial load operation mode based on a tip-speed ratio (TSR) tracking scheme which based on an estimated wind speed determines a power setpoint. The disclosed adjustment process comprises setting a scaled power coefficient as a predetermined power coefficient multiplied by a scaling factor; adding a time-varying perturbation signal to the power setpoint; determining a transfer function from the perturbation signal to a power error; evaluate the frequency response of the transfer function over a time period to determine the scaling factor which minimizes the gain of the transfer function; and setting the operating power coefficient as the scaled power coefficient.
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公开(公告)号：US20230184216A1
公开(公告)日：2023-06-15
申请号：US17911983
申请日：2021-03-15
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： Jesper Sandberg THOMSEN , Johannes Philippus MAREE , Tobias Gybel HOVGAARD , Peter SLOTH-ODGAARD
CPC classification number: F03D7/028 , H02P9/02 , F05B2270/1033 , F05B2270/327
Abstract: The invention relates to control of a wind turbine to address varying drivetrain loading. This is obtained by determining a modification signal to be set as a control signal. A signal indicative of a speed of the electrical generator a signal indicative of a requested output power are received. The signal indicative of a speed is filtering to isolate frequencies in a selected disturbance frequency band to generate a disturbance signal. The disturbance signal is phase shifted and combined with a requested output power to obtain the modification signal.
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Patent Agency Ranking
公开(公告)号：US20220220937A1
公开(公告)日：2022-07-14
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
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：US20210207584A1
公开(公告)日：2021-07-08
申请号：US17056395
申请日：2019-05-08
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： Keld HAMMERUM , Jesper Sandberg THOMSEN
Abstract: This invention relates to obtaining a movement signal indicative of a vibrational movement of a tower. An actuator signal is then 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 then 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 the determined based on the modified pitch reference offset signals, the pitch signals being arranged to adjust the the blades to provide the force that counteracts the vibrational movement of the tower.
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公开(公告)号：US20210167603A1
公开(公告)日：2021-06-03
申请号：US16065591
申请日：2016-12-12
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： Dumitru-Mihai VALCAN , Jorge Martinez GARCIA , Kouroush NAYEBI , Jesper Sandberg THOMSEN , Martin Ansbjerg KJÆR
Abstract: A method for controlling a wind power plant comprising a plurality of wind turbine generators, wherein the method comprises: deriving an estimated value for electrical losses in the wind power plant, deriving a measured value for electrical losses in the wind power plant, based on a difference between an aggregated power production from the plurality of wind turbine generators and a power measurement at a point of common coupling; applying the estimated value for electrical losses and the measured value for electrical losses in an active power control loop, comprising a regulator; and controlling by means of the active power control loop an active power production of the wind power plant at the point of common coupling.
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公开(公告)号：US20190113022A1
公开(公告)日：2019-04-18
申请号：US16088419
申请日：2017-03-30
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： Jacob Deleuran GRUNNET , Thomas KRÜGER , Ali ZAIB , Jesper Sandberg THOMSEN
Abstract: A wind turbine control system comprising at least one control module configured to output a control signal for a control mechanism of a wind turbine, and a gain calculator for calculating a gain parameter associated with the control module, wherein the gain parameter is calculated based on a computerized real-time blade model using a determined wind turbine operating point as an input. The blade model may be a blade element momentum model. In another aspect, the invention may be expressed as a method of controlling a control mechanism of a wind turbine.
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公开(公告)号：US20180171977A1
公开(公告)日：2018-06-21
申请号：US15738170
申请日：2016-06-22
Applicant: VESTAS WIND SYSTEMS A/S
IPC: F03D7/02 , F03D7/04 , G05B19/042
Abstract: The present invention relates to a method for controlling a wind turbine, the wind turbine comprises a rotor connected to a generator, and a rotational speed controller configured to control a speed of the rotor in response to a generator speed reference, and a power controller to control an electric power production, the method comprises the step for receiving a boost command to request a power boost event, so to increase the electrical power production, and imposing a dead band with a dead zone value limit to the rotational speed controller, and wherein the dead band imposes a zero signal to be send to the rotational speed controller, when a speed error is within the dead zone value limit and wherein the dead band imposes an error signal to be send to the rotational speed controller, when a speed error is greater than the dead zone value limit, the error signal being a function of the speed error and the dead zone value limit. The invention also relates to a wind power plant comprising a power plant controller and at least one wind turbine with a control system according to the above mentioned method.
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