Self-checking method and device for generator rotor hydraulic control turning system

Self-checking method and device for generator rotor hydraulic control turning system

Provided is a self-checking method for a generator rotor hydraulic control turning system, comprising the following steps of: establishing a length dimension relationship table between a plurality of hydraulic cylinders in the hydraulic control turning system; selecting a reference hydraulic cylinder and obtaining a reference length dimension of the reference hydraulic cylinder at a target working position, and the target working position being the position where a corresponding turning pin of the reference hydraulic cylinder is inserted into a fitting hole; and based on the reference length dimension and the length dimension relationship table, the plurality of hydraulic cylinders successively moving to perform module function check: moving to the limit position of turning, performing inserting and pulling between the turning pin and the fitting hole to determine that the turning system has a first starting condition. The safety and reliability of operation of the hydraulic control turning ...

A DEFLECTION MONITORING SYSTEM FOR A WIND TURBINE BLADE

SELF-INSPECTION METHOD AND DEVICE FOR HYDRAULIC CONTROL TURNING SYSTEM OF GENERATOR ROTOR

A self-inspection method for a hydraulic control turning system of a generator rotor includes: establishing a length dimension relationship table among a plurality of hydraulic cylinders of the hydraulic control turning system; selecting a reference hydraulic cylinder, and acquiring a reference length dimension when the reference hydraulic cylinder is located at a target working position, the target working position is a position at which a turning pin corresponding to the reference hydraulic cylinder is inserted into an adapted hole; and performing a function inspection of a motion execution module in sequence by the plurality of the hydraulic cylinders, based on the reference length dimension and the length dimension relationship table.

Self-inspection method and device for hydraulic control turning system of generator rotor

A self-inspection method for a hydraulic control turning system of a generator rotor includes: establishing a length dimension relationship table among a plurality of hydraulic cylinders of the hydraulic control turning system; selecting a reference hydraulic cylinder, and acquiring a reference length dimension when the reference hydraulic cylinder is located at a target working position, the target working position is a position at which a turning pin corresponding to the reference hydraulic cylinder is inserted into an adapted hole; and performing a function inspection of a motion execution module in sequence by the plurality of the hydraulic cylinders, based on the reference length dimension and the length dimension relationship table.

A Deflection Monitoring System for a Wind Turbine Blade

A wind turbine blade comprising a system for monitoring the deflection of a wind turbine blade is described. The system comprises a wireless range-measurement system, having at least one wireless communication device located towards the root end of the blade and at least one wireless communication device located towards the tip end of the blade and internally within the blade body. Radio absorbing material is arranged internally in the blade body in the wireless communication path between the root-and tip devices. 11052541820601416. A wind turbine blade () comprising an airfoil profile body having a pressure side () and a suction side () , and a leading edge () and a trailing edge () with a chord length () extending there between , the blade having a tip end () and a root end () , the wind turbine blade further comprising:{'b': '72', 'at least one tip communication device () located towards said tip end,'}{'b': '70', 'at least one root communication device () located towards said root end, said at least one root communication device being in wireless radio communication with said at least one tip communication device via a wireless communication path, to monitor the distance between said at least one tip communication device and said at least one root communication device to determine a movement of said at least one tip communication device relative to said at least one root communication device indicative of a blade deflection, wherein'}{'b': '80', 'said at least one tip communication device is provided internally in the airfoil profile body, and wherein at least one radio wave absorbing material () is arranged internally in the airfoil profile body and in said wireless communication path.'}2807270. A wind turbine blade according to claim 1 , wherein said radio wave absorbing material () is arranged between the at least one tip communication device () and the at least one root communication device () at a distance from the tip communication device of between 0.2-3. ...

Load mitigation device for wind turbine blades

The present invention includes a rotor blade ( 20 ) having a blade body ( 30 ) with a leading edge ( 26 ) and a trailing edge ( 28 ) and opposed first and second surfaces ( 34, 36 ) extending there between defining an airfoil shape ( 32 ) in cross-section. A passageway ( 42 ) extends through the blade body ( 30 ) between the first and second surfaces ( 34, 36 ). A flexible member ( 60 ) is sealed over one end ( 50 ) of the passageway ( 42 ). Advantageously, the flexible member ( 60 ) is passively responsive to changes in a differential pressure between the first and second surfaces ( 34, 36 ) to move between a deactivated position ( 62 ) and an activated position ( 64 ) where the flexible member ( 60 ) extends away from the airfoil shape ( 32 ) to function as a load mitigation device ( 40 ) for the wind turbine rotor blade ( 20 ).

Wind Power Plant with a plurality of Wind Power Devices and Method for Controlling the Wind Power Plant

A wind power plant for converting wind power of a wind field into electrical energy. The wind power plant includes at least one wind power device having a wind measurement device. Furthermore, the wind power plant comprises a central storage device in which wind profile patterns are stored in a wind profile pattern table. The wind measurement device predictively detects current wind measurement values. The wind power plant has a central pattern recognition device that correlates the current wind measurement values of the wind measurement device with the stored wind profile patterns of the wind profile pattern table. A central control device individually controls each single wind power device of the wind power plant as a function of a wind profile pattern determined by correlation.

Atmospheric Measurement System

A magnitude and direction, or a measure responsive thereto, of a velocity (V) of a first portion ( 17 ) of an atmosphere ( 20 ) are determined from at least first and second portions of scattered light ( 30 ) generated along a common beam of light ( 28 ) within the first portion ( 17 ) of the atmosphere ( 20 ) and received along linearly independent directions at locations that are relatively remote with respect to one another, at least one of which is relatively remote from a source ( 11 ) of the beam of light ( 28 ).

Independent blade pitch control

A system and method are provided to increase efficiency of turbines in wind farms. A sensor is configured to detect direction and speed of an inflow of wind. A controller is configured to generate a control signal based the detected direction and speed of the inflow of wind. A pitch adjustment device configured to adjust pitch of a blade of the turbine based on the control signal.

Wave power generation device and method of controlling the same

Provided is a wave power generation device improved in power generation efficiency and a method of controlling the same, the wave power generation device generating electric power by extracting energy from a wave. The wave power generation device includes: a wave sensor configured to measure the waveform; a position sensor configured to measure a position of a float relative to a column; a drive mechanism configured to apply an external force to the float; and a controller configured to control the drive mechanism. The controller is configured to calculate a speed at which the float is to be controlled to move, from values of the wave sensor and the position sensor, and to control the drive mechanism in such away that the float moves at the calculated speed.

Down wind fluid turbine

A shrouded fluid turbine includes a support structure, a nacelle body rotationally coupled to the support structure and configured to pivot about a pivot axis passing through the support structure, a rotor coupled to the nacelle body and having a rotor plane passing therethrough, the rotor plane being offset from the pivot axis, and an aerodynamically contoured turbine shroud surrounding the rotor and having a leading edge, a trailing edge and a plurality of mixing elements disposed therein. A center of pressure may be located downstream of the rotor plane with respect to direction of a fluid flow, and a combination of the nacelle body, the rotor, and the aerodynamically contoured turbine shroud may be configured to pivot about the pivot axis in response to a force exerted on the combination by the fluid flow such that the leading edge faces into the direction of the fluid flow.

METHOD AND DEVICE FOR OPERATING A WIND TURBINE

The invention relates to a method for operating a wind turbine. The method comprises measuring a torsion between a first point () of a rotor blade () of a wind turbine and a second point () spaced apart from the first point, and determining at least one parameter, in particular an actual value of the at least one parameter, of the wind turbine based on the measured torsion, wherein the at least one parameter is selected from the group comprising an angle of attack of the rotor blade (), a pitch angle, a wind speed, an angle of incidence, and a flow speed. 1. A method for operating a wind turbine , comprising:measuring a torsion between a first point of a rotor blade of a wind turbine and a second point spaced apart from the first point, in particular by using a torsion sensor which is integrated in the rotor blade or disposed on the surface of the rotor blade; anddetermining at least one parameter, in particular an actual value of the at least one parameter, of the wind turbine based on the measured torsion, wherein the at least one parameter is selected from the group comprising an angle of attack of the rotor blade, a pitch angle, a wind speed, an angle of incidence, and a flow speed.2. The method according to claim 1 , further comprising:comparing the at least one parameter to at least one target value of the at least one parameter.3. The method according to claim 1 , further comprising:setting the angle of attack and/or the pitch angle of the rotor blade based on the measured torsion, in particular based on the comparison to the at least one target value.4. A method for operating a wind turbine claim 1 , comprising:measuring a torsion between a first point of a rotor blade of a wind turbine and a second point spaced apart from the first point; andperforming a frequency analysis of a measurement signal indicating the torsion.5. The method according to claim 4 , comprising:determining a fluttering movement of the rotor blade based on the frequency analysis.6. The ...

METHOD FOR PREDICTING THE ACCUMULATION OF ICE ON A ROTOR BLADE OF A WIND TURBINE AND THE USE THEREOF

Embodiments describe a method for predicting the accumulation of ice on a rotor blade () of a wind turbine () and the use thereof. The method comprises defining an upper threshold value (So) and/or a lower threshold value (Su) for a system variable (S) which is associated with the mass of the rotor blade () and/or with the mass of an ice attachment () of the rotor blade (); acquiring system variable data during an acquisition time period (T); carrying out a compensation calculation of the curve profile for a prediction time period (Δttt) from the system variable data which were acquired during a partial time period (Δttt) of the acquisition time period (T) in order to obtain a prediction curve (N N N); carrying out at least one further compensation calculation of the curve profile for a further prediction time period (Δttt) from the system variable data which were acquired during another partial time period (Δttt) of the acquisition time period (T) in order to obtain a further prediction curve (N N N); determining whether or not the upper threshold value (So) will be exceeded by one or more of the prediction curves (N N N) in future and/or whether the lower threshold value (Su) will not be undershot by one or more of the prediction curves (N N N) in the future; and outputting the result of the determination.; and outputting the result of the determination. 1. A method for predicting the accumulation of ice on a rotor blade of a wind turbine , comprising:defining an upper threshold value and/or a lower threshold value for a system variable which is associated with the mass of the rotor blade and/or with the mass of an ice attachment of the rotor blade;acquiring system variable data during an acquisition time period;carrying out a compensation calculation of the curve profile for a prediction time period from the system variable data which were acquired during a partial time period of the acquisition time period in order to obtain a prediction curve;carrying out at ...

SYSTEMS AND METHODS TO CORRECT INDUCTION FOR LIDAR-ASSISTED WIND TURBINE CONTROL

Methods, apparatus, systems and articles of manufacture are disclosed to provide wind turbine control and compensate for wind induction effects. An example method includes receiving wind speed data from a Light Detecting and Ranging (LIDAR) sensor. The example method includes receiving operating data indicative of wind turbine operation. The example method includes determining an apriori induction correction for wind turbine operating conditions with respect to the LIDAR wind speed data based on the operating data. The example method includes estimating a wind signal from the LIDAR sensor that is adjusted by the correction. The example method includes generating a control signal for a wind turbine based on the adjusted LIDAR estimated wind signal. 1. A method of controlling a wind turbine , the method comprising:receiving wind speed data from a Light Detecting and Ranging (LIDAR) sensor;receiving operating data indicative of wind turbine operation;determining an apriori induction correction for wind turbine operating conditions with respect to the LIDAR wind speed data based on the operating data;estimating a wind signal from the LIDAR sensor that is adjusted by the correction; andgenerating a control signal for the wind turbine based on the adjusted LIDAR estimated wind signal.2. The method of claim 1 , wherein the operating data indicative of wind turbine operation includes a measurement or a model-based estimate of at least one of turbine thrust claim 1 , turbine speed claim 1 , turbine torque claim 1 , turbine yaw claim 1 , position claim 1 , or turbine blade pitch.3. The method of claim 1 , wherein the induction correction includes determining a mean induction model and a delayed dynamic induction model based on the operating data indicative of wind turbine operation.4. The method of claim 3 , wherein the mean induction model includes determining a mean induction factor using a low pass filter on the operating data indicative of wind turbine operation to ...

System and Method for Reducing Loads During an Idling or Parked State of a Wind Turbine with a Stuck Rotor Blade

A method for reducing loads of a wind turbine includes determining an angular pitch speed parameter of the rotor blade of the wind turbine. The method also includes determining an operational state of the wind turbine. Further, the method includes comparing the angular pitch speed parameter to a predetermined parameter threshold during turbine shutdown and/or a commanded pitch event. If the operational state corresponds to a predetermined operational state, the method includes yawing a nacelle of the wind turbine away from an incoming wind direction when the angular pitch speed parameter is below the predetermined parameter threshold during the turbine shutdown and/or the commanded pitch event. 1. A method for reducing loads of a wind turbine , the method comprising:determining an angular pitch speed parameter of the rotor blade of the wind turbine;determining an operational state of the wind turbine;comparing the angular pitch speed parameter to a predetermined parameter threshold during turbine shutdown and/or a commanded pitch event; and,if the operational state corresponds to a predetermined operational state, yawing a nacelle of the wind turbine away from an incoming wind direction for as long as the angular pitch speed parameter is below the predetermined parameter threshold.2. The method of claim 1 , wherein determining the angular pitch speed parameter of the rotor blade of the wind turbine further comprises:monitoring sensor signals generated by at least one sensor; and,determining the angular pitch speed parameter of the rotor blade based on the monitored sensor signals.3. The method of claim 2 , wherein determining the angular pitch speed parameter of the rotor blade of the wind turbine further comprises incrementally counting monitored pulses generated by the encoder and determining the angular pitch speed parameter of the rotor blade as a function of the counted pulses.4. The method of claim 3 , wherein comparing the angular pitch speed parameter to the ...

POWER GENERATING APPARATUS

Power generating apparatus () comprises a housing () and a wind turbine () within the housing. The wind turbine comprises a plurality of rotatable turbine blades (). The housing has a forward region () extending forwardly of the wind turbine, the forward region defining an inlet opening () for air, and a rearward region () extending rearwardly of the wind turbine, the rearward region defining an outlet opening for air. 149-. (canceled)50. Power generating apparatus comprising: a housing; a wind turbine within the housing , the wind turbine comprising a plurality of rotatable turbine blades , wherein the housing has a forward region extending forwardly of the wind turbine , the forward region defining an inlet for air , and a rearward region extending rearwardly of the wind turbine , the rearward region defining an outlet for air; a support arrangement for supporting the wind turbine on the housing , wherein the support arrangement includes a nose cone arranged forwardly of the wind turbine; and an electricity generating apparatus arranged inside the nose cone forwardly of the wind turbine.514056. Power generating apparatus according to claim 50 , wherein the wind turbine includes a hub to which the plurality of turbine blades are attached claim 50 , the turbine blades extending radially from the hub claim 50 , and wherein the hub has a principal axis about which the turbine blades can rotate claim 50 , and the wind turbine comprises between and turbine blades spaced regularly about the hub.52. Power generating apparatus according to claim 51 , wherein each turbine blade has a leading edge and a trailing edge claim 51 , and the pitch of each turbine blade increases from the leading edge to the trailing edge claim 51 , the pitch of the leading edge of each turbine blade being between 0° and 10° claim 51 , and the pitch of the trailing edge of each turbine blade being between 50° and 60°.53. Power generating apparatus according to claim 52 , wherein the wind turbine ...

REACTION TO AN OVERSPEED EVENT

Provided is a method of controlling at least one wind turbine in case of a rotational overspeed situation, the method including: determining a current state related to the wind turbine; providing data related to the current state as input to a turbine model; predicting a load of at least one wind turbine component and power output of the wind turbine using the turbine model provided with the input for plural control strategies; comparing the predicted load and power output for the plural control strategies; and selecting that control strategy among the plural control strategies that satisfies a target criterion including the load and the power output. 1. A method of controlling at least one wind turbine in case of a rotational overspeed situation , the method comprising:determining a current state related to the wind turbine;providing data related to the current state as input to a turbine model;predicting load of at least one wind turbine component and power output of the wind turbine using the turbine model provided with the input for plural control strategies;comparing the predicted load and power output for the plural control strategies; andselecting that control strategy among the plural control strategies that satisfies a target criterion comprising the load and the power output.2. The method according to claim 1 , wherein the target criterion includes at least one of:the predicted load of at least one or plural or all wind turbine components is in an allowed range; andthe predicted power output is maximized wherein the target criterion is in particular configurable.3. The method according to claim 1 , wherein overspeed situation is identified if rotational speed of the main rotor of the wind turbine exceeds a first predefined rotational speed limit but is lower than a second predetermined rotational speed limit.4. The method according to claim 1 , wherein claim 1 , if the rotational speed exceeds the second predefined rotational speed limit claim 1 , the wind ...

System and Method for Protecting Wind Turbines During Extreme Wind Direction Change

A method for protecting a wind turbine from an extreme change in wind direction includes receiving a wind direction and/or a wind speed at the wind turbine. When a change in the wind direction or the wind speed exceeds a predetermined threshold, the method includes determining a margin to stall and/or zero lift of the at least one rotor blade of the wind turbine as a function of an angle of attack or change in the angle of attack at a blade span location of at least one rotor blade of the wind turbine. The method also includes implementing a corrective action for the wind turbine (without shutting down the wind turbine) when the margin to stall and/or zero lift exceeds a predetermined value so as to avoid stall and/or negative lift on the at least one rotor blade during operation of the wind turbine. 1. A method for protecting a wind turbine from an extreme change in wind direction , the method comprising:receiving, via the controller, at least one of a wind direction or a wind speed at the wind turbine;when a change in the wind direction or the wind speed exceeds a predetermined threshold, determining, via the controller, a margin to stall and/or zero lift of the at least one rotor blade of the wind turbine as a function of an angle of attack or change in the angle of attack at a blade span location of at least one rotor blade of the wind turbine; and,without shutting down the wind turbine, implementing, via the controller, a corrective action for the wind turbine when the margin to stall and/or zero lift exceeds a predetermined value so as to avoid stall and/or negative lift on the at least one rotor blade during operation of the wind turbine.2. The method of claim 1 , further comprising determining the angle of attack or the change in the angle of attack at the blade span location of at least one rotor blade of the wind turbine as a function of one or more of the following: a wind speed at the wind turbine claim 1 , a rotor speed of the wind turbine claim 1 , a ...

METHOD AND SYSTEM FOR PARAMETERIZATION OF A CONTROLLER FOR A WIND ENERGY INSTALLATION AND/OR OPERATION OF A WIND ENERGY INSTALLATION

A method of parameterizing a controller of a first wind energy installation wherein the controller sets a manipulated variable of the wind energy installation as a function of an input variable. An artificial intelligence determines at least one value of a parameter of the controller for at least one state/degree of being iced up of the wind energy installation based on a power curve, load, and/or downstream flow of the wind energy installation predicted with a mathematical model of the wind energy installation for at least one state/degree of being iced up, and/or determines at least one value of a parameter of the controller for at least one state/degree of being iced up of the wind energy installation, based on at least one determined state/degree of being iced up and a power, load, and/or downstream flow of the wind energy installation and/or at least one second wind energy installation. 19-. (canceled)10. A method of parameterizing a controller of a first wind energy installation , wherein the controller is configured to set a manipulated variable of the first wind energy installation based on an input variable , the method comprising at least one of:determining with an artificial intelligence at least one value of a parameter of the controller for at least one state/degree of the first wind energy installation being iced up on the basis of at least one of a power curve, a load, or a downstream flow of the first wind energy installation predicted with a mathematical model of the wind energy installation for at least one state/degree of being iced up; ordetermining with the artificial intelligence at least one value of a parameter of the controller for at least one state/degree of the first wind energy installation being iced up, on the basis of at least one determined state/degree of the first wind energy installation being iced up, and at least one of a power, a load, or a downstream flow of at least one of the first wind energy installation or at least one ...

Method for Detecting Irregular Turbine Operation Using Direct and Indirect Wind Speed Measurements

Method for operating a wind turbine, the wind turbine including a wind characteristics sensor for measuring a wind characteristic and at least one wind turbine state sensor for measuring a state of the wind turbine, the method comprising: determining or adjusting () one or more wind characteristics relationships; and, performing () an operation phase, the operation phase including: measuring the wind characteristics with the wind characteristics sensor, thereby obtaining measured wind characteristics; measuring the state of the wind turbine with the at least one wind turbine state sensor and determining an estimated wind characteristics from the measured state of the wind turbine and parameters of the wind turbine; comparing the estimated wind characteristics to an expected wind characteristics determined from the measured wind characteristics, wherein the expected wind characteristics is determined based on the one or more wind characteristics relationships; and, operating or shutting down the wind turbine based at least in part on the comparison result. 115-. (canceled)16. A method for operating a wind turbine , the wind turbine including a wind characteristics sensor for measuring a wind characteristic and at least one wind turbine state sensor for measuring a state of the wind turbine , the method comprising:determining or adjusting one or more wind characteristics relationships; measuring the wind characteristics with the wind characteristics sensor, thereby obtaining measured wind characteristics;', 'measuring the state of the wind turbine with the at least one wind turbine state sensor and determining an estimated wind characteristic from the measured state of the wind turbine and parameters of the wind turbine;', 'comparing the estimated wind characteristics to an expected wind characteristics determined from the measured wind characteristics, wherein the expected wind characteristics is determined based on the one or more wind characteristics relationships; ...

MODULAR WIND TURBINE INCLUDING WIND DIRECTING FEATURES, SYSTEMS, AND METHODS OF USE THEREOF

A modular wind turbine system and a method of use thereof are provided. The system comprises: a mounting frame; a fixed toroidal support structure attached to the mounting frame, the toroidal support structure having a concave portion and a convex portion; a wind turbine located proximal to the concave portion of the toroidal support structure, wherein the wind turbine travels about at least a portion of the concave portion of the toroidal support structure; and a first baffle, wherein the first baffle extends about the portion of the concave portion of the toroidal support structure about which the first turbine travels, wherein the baffle surrounds a portion of the wind turbine opposite the fixed toroidal support structure, and wherein the baffle includes at least one component selectively variably adjustable so as to vary the force, direction, or disruption of flow of fluid thereby, relative to the wind turbine.

A multirotor wind turbine

A multirotor wind turbine (1) comprising a tower structure (2) and at least one load carrying structure (3, 4), each load carrying structure (3, 4) being arranged for carrying two or more energy generating units (5, 7) comprising a rotor (6, 8). At least two of the rotors are upwind or downwind rotors (6), the energy generating units (5) comprising upwind or downwind rotors (6) being arranged with their centres of gravity at a first distance behind the tower structure (2) along a direction of the incoming wind, substantially at the same vertical level, and at opposite sides of the tower structure (2) at substantially the same second distance to the tower structure (2) along a direction substantially perpendicular to the direction of the incoming wind. The multirotor wind turbine (1) is self-yawing, even under turbulent wind conditions.

Method for controlling a wind turbine with access hatch interlocks, and associated wind turbine

A method for protecting personnel working in a wind turbine nacelle or hub includes monitoring a nacelle roof hatch and a hub access hatch, each hatch having a switch configured therewith. When at least one of the hatches is detected as opened, a control system detects if a rotor lock has been engaged. If the rotor lock has not been engaged, the control system triggers a rotor brake to stop rotor and drivetrain component rotational movement and actuates a first control lockout between the respective switch configured with the open hatch and the rotor brake. The control system also initiates a control lockout that prevents release of the rotor brake until the switch indicates that the open hatch has been closed and the first control lockout has been reset.

Wind turbine control system including an artificial intelligence ensemble engine

A system for generating power includes an environmental engine operating on one or more computing devices that determines a Reynolds number for a wind turbine, wherein the Reynolds number characterizes wind flowing over a blade of the wind turbine that varies based on the wind speed, a rotor speed and characteristics of the blade of the wind turbine. The system also includes an artificial intelligence (AI) ensemble engine operating on the one or more computing devices that generates a plurality of different models for the wind turbine. Each model characterizes a relationship between the rotor speed and a blade pitch for the wind turbine, the Reynolds number, wind speed and turbulence intensity for the wind turbine. The AI ensemble engine selects a model with a highest efficiency metric; and simulates execution of the selected model to determine recommended operating parameters.

WIND TURBINE

A wind turbine comprising a converter connected to a generator, which converter supplies at least some of the energy generated by the electrical generator into an electrical grid, sensors for interference in the electrical grid and a controller module for controlling the converter and/or the wind turbine. The controller module comprises a grid interference module which, in the case of detected interference in the electrical grid, counteracts the interference. The controller module comprises an override module which, in the case of a detected interference in the grid, is provided in order to deactivate the grid interference module at least in part. This improves the behavior in interference situations in that the controller module detects, over the course of the interference, that at least parts of the inherent grid stabilization functions do not counteract the interference and, in this specific situation, it deactivates the respective harmful grid stabilization functions. 1. A wind turbine comprising a converter which is connected to a generator and injects at least some of the energy generated by the electric generator into an electrical grid , sensors for sensing interference on the electrical grid , a controller for controlling the converter , wherein the controller comprises a grid interference module that is configured to counteract the interference on the electrical grid , wherein the controller comprises an override module that is configured to at least partially deactivate the grid interference module.2. The wind turbine of claim 1 , wherein the grid interference module comprises at least one frequency interference module for regulating active power output as a function of frequency on the grid and a reactive power interference module for regulating reactive power as a function of voltage on the grid claim 1 , and wherein the override module is configured to deactivate each module of the grid interference module individually and independently of one another. ...

PITCH CONTROL SYSTEM FOR PITCHING WIND TURBINE BLADE

There is provided a pitch control system () for controlling a pitch force system () for pitching a blade () of a wind turbine (), the pitch control system () being arranged for activating () an auxiliary pitch force subsystem () at an initiation point in time where a main pitch force is sufficient to pitch the blade () into a target pitch value. An advantage thereof may be that tracking of a target pitch value may be improved and the impact on the pitch force system () may be reduced. In aspects, there is furthermore presented a hydraulic pitch system (), a wind turbine (), a method and a computer program product. 1. A pitch control system for controlling a pitch force system for pitching a blade of a wind turbine , the pitch control system being arranged for:controlling a main pitch force subsystem of the pitch force system, the main pitch force subsystem being capable of applying a main pitch force to the blade,controlling an auxiliary pitch force subsystem of the pitch force system, the auxiliary pitch force subsystem being capable of applying an auxiliary pitch force to the blade in addition to the main pitch force,wherein the pitch control system in a decision mode is arranged fordeciding whether or not to activate the auxiliary pitch force subsystem and apply the auxiliary pitch force to the blade,activating the auxiliary pitch force subsystem for applying the auxiliary pitch force to the blade if it is decided to activate the auxiliary pitch force subsystem and apply the auxiliary pitch force to the blade, wherein the activating is initiated at an initiation point in time where the main pitch force is sufficient to pitch the blade into a target pitch value corresponding to the initiation point in time.2. The pitch control system according to claim 1 , wherein the deciding comprises [{'sub': 'f', 'a required pitch force at a future point in time (t) for pitching the blade'}, 'into a target pitch value corresponding to the future point in time exceeds', 'a ...

DAMPING OF A WIND TURBINE TOWER OSCILLATION

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. 1. A method for damping an oscillation of a tower of a wind turbine , wherein the method further comprises: a first periodic component with a first amplitude which is larger than zero, and where the first frequency of the first periodic component corresponds to the frequency difference between a tower frequency and a rotor frequency,', 'and', 'a second periodic component with a second amplitude which is larger than zero, and where a second frequency of the second periodic component corresponds to a frequency sum of the tower frequency and the rotor frequency,, 'preparing for each rotor blade of the wind turbine a precursor signal, where each precursor signal comprisespreparing for each rotor blade a tower damping pitch control signal as a result of the precursor signal wherein the second amplitude of the second periodic component has been partially or fully reduced relative to the first amplitude of the first periodic component,damping the oscillation of the tower by pitching each rotor blade individually according to the tower damping pitch control signals.2. A method for damping an oscillation of a tower of a wind turbine according to claim 1 , wherein each tower damping ...

METHOD AND WINDFARM CONTROL STAGE FOR CONTROLLING A WINDFARM

A method for controlling a windfarm having a plurality of wind power installations and feeding into an electrical supply network at a network connection point is provided. The method includes inputting at least one control error at a control error input of a windfarm control module, generating at least one manipulated variable depending on the at least one control error using at least one controller, and outputting the at least one manipulated variable at a manipulated variable output for transmission to the wind power installations. The method includes recording in each case at least one state of the windfarm, the windpower installations thereof and/or an ambient condition as form state at a state input of the control module, and altering or predefining at least one property of the at least one controller depending on the at least one recorded form state by means of a controller setting device. 1. A method for controlling a windfarm having a plurality of wind power installations and feeding into an electrical supply network at a network connection point , the method comprising:inputting at least one control error at a control error input of a windfarm control stage,generating, by at least one controller of the windfarm control stage, at least one manipulated variable based on the at least one control error,outputting the at least one manipulated variable at a manipulated variable output for transmission to the plurality of wind power installations,recording, as a form state at a state input of the control stage, at least one state of the windfarm, the plurality of wind power installations or an ambient condition,altering or predefining, by a controller setting device, at least one property of the at least one controller based on the at least one form state.2. The method as claimed in claim 1 , comprising:altering or predefining the at least one property of the at least one controller before a start-up of the windfarm or a wind power installation of the plurality of ...

WIND TURBINE AND METHOD FOR NOISE REDUCTION FOR A WIND TURBINE

Wind turbine comprising a tower () bearing a nacelle () and a rotor () with a plurality of rotor blades () and an active noise reduction device (), wherein the active noise reduction device () comprises at least one actuator (), at least one unsteady pressure sensor () adapted to produce an output signal corresponding to a turbulent flow condition during operation of the rotor blade (), at least one noise sensor () adapted to produce an output signal corresponding to a noise generated by the rotor blade () at the location of the noise sensor (), and a control unit (), wherein the unsteady pressure sensor () and the actuator () are arranged on at least one of the rotor blades () and the noise sensor () is arranged at the nacelle () and/or at the tower (), wherein the control unit () is adapted to control the actuator () in dependence of the output signals of the unsteady pressure sensor () and the noise sensor () to emit an anti-noise signal at least partly reducing the noise generated by the rotor blade (). 1253477894104101198410521189104. Wind turbine comprising a tower () bearing a nacelle () and a rotor () with a plurality of rotor blades () and an active noise reduction device () , wherein the active noise reduction device () comprises at least one actuator () , at least one unsteady pressure sensor () adapted to produce an output signal corresponding to a turbulent flow condition during operation of the rotor blade () , at least one noise sensor () adapted to produce an output signal corresponding to a noise generated by the rotor blade () at the location of the noise sensor () , and a control unit () , wherein the unsteady pressure sensor () and the actuator () are arranged on at least one of the rotor blades () and the noise sensor () is arranged at the nacelle () and/or at the tower () , wherein the control unit () is adapted to control the actuator () in dependence of the output signals of the unsteady pressure sensor () and the noise sensor () to emit an ...

CONTROL OF A WIND TURBINE

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. 1. A control system for a wind turbine , the control system comprising:a model predictive control (MPC) unit configured to determine a control signal for controlling an operation of the wind turbine, wherein the MPC unit is configured to determine the control signal 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, wherein the cost weighting defines a relative weighting of the wear cost in the cost function; and 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; wherein, 'a weighting determination unit configured tothe MPC unit is configured to set the cost weighting based at least in part on the weighting adjustment.2. The control system of claim 1 , wherein the weighting determination unit is configured to determine the weighting ...

WIND TURBINE CONTROL BASED ON OPTIMICING AND NON-OPTIMICING CONTROLLER ROUTINES

Wind turbine control based on optimizing and non-optimizing controller routines is disclosed. A first controller implements a model predictive control (MPC) routine for calculating a predicted first control value. A second controller implements a non-optimizing control routine for calculating a second control value. An actuator controller unit determines an actuator control signal by combining the predicted first control value and the second control value. 1. A wind turbine control system comprising:a first controller unit implementing a model predictive control (MPC) routine for calculating a predicted operational trajectory of a predicted operational signal, where a trajectory comprises a time series of at least one variable, and where a trajectory includes a predicted first control value;a second controller unit implementing a non-optimizing controller for calculating a second control value; andan actuator controller unit arranged for determining an actuator control signal by combining the predicted first control value and the second control value.2. The wind turbine control system according to wherein the actuator controller unit comprises a sampling unit which is arranged for receiving the predicted first control value at a first sampling rate and is arranged for receiving the second control value at a second sample rate claim 1 , and wherein the sampling unit is arranged for adjusting the sampling rate of at least one of the predicted first control value and the second control value to output the actuator control signal at an output sample rate.3. The wind turbine control system according to where the predicted control value relates to a first control value claim 1 , and where the second control value relates to a second control value claim 1 , the first and second control values being different control values.4. The wind turbine control system according to where the model predictive control routine is implemented for online optimization.5. The wind turbine ...

METHOD OF OPERATING A WIND TURBINE

The disclosure relates to a method for operating a wind turbine wherein the method includes: operating the wind turbine over an operating period in accordance with a control strategy, providing one or more input values representing a load acting on at least one component of the wind turbine and providing uncertainties of the input values, determining, based on the input values, an aggregated load value representing an aggregated load acting on the at least one component of the wind turbine over an aggregation period, determining, based on the uncertainties of the input values, an uncertainty of the aggregated load value, determining a statistical load aggregate from the aggregated load value and the uncertainty of the aggregated load value, adjusting the control strategy based on the statistical load aggregate. The disclosure further relates to a wind turbine and a wind farm configured to perform the above method. 1. A method of operating a wind turbine , comprising:a. operating the wind turbine over an operating period in accordance with a control strategy;b. providing one or more input values representing a load acting on at least one component of the wind turbine and providing uncertainties of the input values;c. determining, based on the input values, an aggregated load value representing an aggregated load acting on the at least one component of the wind turbine over an aggregation period;d. determining, based on the uncertainties of the input values, an uncertainty of the aggregated load value;e. determining a statistical load aggregate from the aggregated load value and the uncertainty of the aggregated load value; and,f. adjusting the control strategy based on the statistical load aggregate.2. The method of claim 1 , wherein claim 1 , in step b claim 1 , measured loads are provided as input values and claim 1 , in step b claim 1 , uncertainties of the measured loads are provided.3. The method of claim 1 , wherein claim 1 , in step b claim 1 , estimated loads ...

METHOD AND SYSTEM FOR WASTEGATE CONTROL

Methods and systems are provided for controlling a wastegate coupled to a turbine. In one example, a method may include during steady engine operation, actuating a wastegate to introduce an oscillation in boost pressure, and updating gain of a wastegate feedback controller responsive to the oscillation in boost pressure. 1. A method for an engine , comprising:during steady engine operation, inducing a boost pressure oscillation by actuating a wastegate, and compensating a manifold air pressure with a corresponding throttle oscillation; andupdating a gain of a wastegate feedback controller based on the boost pressure oscillation.2. The method of claim 1 , further comprising updating the gain of the wastegate feedback controller based on amplitude and frequency of the boost pressure oscillation claim 1 , wherein the frequency of the boost pressure oscillation is determined based on peaks and zero-crossings of the boost pressure oscillation; and adjusting a signal sent to a wastegate actuator based on the updated gain.3. The method of claim 1 , further comprising increasing the gain of the wastegate feedback controller when amplitude of the boost pressure oscillation decreases.4. The method of wherein the wastegate is controlled with the updated gain.5. The method of claim 1 , wherein the wastegate feedback controller includes a PID controller.6. The method of claim 5 , further comprising updating a proportional gain claim 5 , integral gain claim 5 , and a derivative gain of the PID controller with a tuning knob to trade off response speed versus robustness of the PID controller.7. The method of claim 1 , wherein the steady engine operation includes variation of a torque demand is smaller than a threshold over a predetermined time period.8. The method of claim 1 , further comprising stopping the boost pressure oscillation and throttle oscillation responsive to a change of torque demand greater than a threshold.9. The method of claim 1 , further comprising determining ...

SYSTEM AND METHOD FOR PREVENTING VOLTAGE COLLAPSE OF WIND TURBINE POWER SYSTEMS CONNECTED TO A POWER GRID

A system and method for preventing voltage collapse of a wind turbine power system includes receiving a power input value and a voltage input value from a point of common coupling of the wind turbine power system. The method also includes determining a limit cycle reference point of the wind turbine power system as a function of the input values. The method further includes comparing the limit cycle reference point to at least one predetermined threshold. If the limit cycle reference point is greater than the at least one predetermined threshold, the method includes determining a delta value for the real and reactive voltage commands of the wind turbine power system. Further, the method includes determining updated real and reactive voltage commands based on the delta value. As such, the method also includes operating the wind turbine power system based on the updated real and reactive voltage commands. 1. A method for preventing voltage collapse of a wind turbine power system connected to a power grid , the method comprising:receiving, via a controller of the wind turbine power system, at least one input value from a point of common coupling of the wind turbine power system;determining, via the controller, a limit cycle reference point of the wind turbine power system as a function of the input value, the limit cycle reference point representative of a proximity of the at least one input value to an operational point at which voltage collapse occurs;comparing the limit cycle reference point to at least one predetermined threshold;if the limit cycle reference point is greater than the at least one predetermined threshold, determining a delta value for at least one command of the wind turbine power system;determining at least one updated command based on the delta value and the at least one command; and,operating the wind turbine power system based on the at least one updated command.2. The method of claim 1 , wherein the input value comprises at least one of a power ...

Method of Controlling A Wind Turbine and Related System

The present invention relates to a method for controlling a wind turbine, in particular a method for controlling pitch of one or more blades of a wind turbine and related system. The method comprises collecting first data indicative of a dynamic condition of the first wind turbine blade and the rotor, the first data comprising rotor data and first deflection data, the rotor data being indicative of the azimuth position and rotational velocity of the rotor in a rotor plane perpendicular to the rotor axis, and the first deflection data being indicative of the position, speed and acceleration of one or more parts of the first wind turbine blade. Further, the method comprises calculating an expected tower clearance distance at a later time of tower passage for the first wind turbine blade based on the first data including acceleration of one or more parts of the first wind turbine blade, and performing measures to prevent tower collision, if the expected tower clearance distance fulfills a collision risk criterion. 1. A method of controlling a wind turbine comprising a tower and a rotor provided on top of the tower , the rotor comprising one or more wind turbine blades including at least a first wind turbine blade that rotates about a rotor axis , the method comprising the steps of:collecting first data indicative of a dynamic condition of the first wind turbine blade and the rotor, the first data comprising rotor data and first deflection data, the rotor data being indicative of the azimuth position and rotational velocity of the rotor in a rotor plane perpendicular to the rotor axis, and the first deflectiondata being indicative of the position, speed and acceleration of one or more parts of the first wind turbine blade, andcalculating an expected tower clearance distance at a predicted time of tower passage for the first wind turbine blade based on at least the acceleration ofsaid one or more parts of the first wind turbine blade in a direction perpendicularto the ...

OPTIMAL WIND FARM OPERATION

The present application is concerned with a flexible way of operating a wind farm with a plurality of degrading wind turbine components. According to the invention, maintenance scheduling and power production in the wind farm are handled concurrently in a single optimization step. Instead of a serial approach first scheduling maintenance activities and subsequently adapting the power production and/or wind turbine operation the two aspects are optimized together. The wind farm operation takes maintenance aspects into account by adapting life index or health status based on modeled mechanical and electrical stress. Accordingly, the wind farm owner may decide when and how much energy to produce accepting which level of stress to the turbine equipment. The proposed optimization of wind farm operation includes all aspects of transmission network operator settings, the topology of wind farms and the underlying collector grid, the short and long term wind conditions forecasts, the conditions of the turbines, the estimated remaining operational time under different usage patterns and times, as well as aspects of the electricity market. 1. A method of operating a wind farm including plurality of wind turbines with a plurality of turbine components comprising a first and further turbine components , said turbine components subject to degradation , comprising:{'sub': 1', 'N1', '1', '1', '1', 'N1', 'M1, 'predicting, for a turbine component of a first wind turbine and for each of a sequence of time intervals (t. . . t) into the future, based on a sequence of first turbine control input values (u(t) . . . u(t)) including a component maintenance action at a maintenance interval t, a component life index L(t) of the first turbine component,'}{'sub': 1', '1', '1', 'N1, 'determining a sequence of optimum turbine control input values (u*(t) . . . u*(t)) including'}{'sub': 'M1', 'a) an optimum maintenance interval t* for the first turbine component and'}{'sub': 'Mj', 'b) optimum ...

STATE MACHINE FOR WIND POWER PLANT

The present invention relates to a state machine for controlling a wind power plant (WPP), comprising at least one wind turbine connected to an electrical grid, the state machine is adapted to, receive a plant power reference (P_total) according to at least one electrical value of the electrical grid, manage a plurality of control modes and output signals, in relation to the plurality of control modes, select within the control modes, according to controller inputs and contingency at that moment in time, transfer the corresponding control values to a power controller, and dispatch a power reference to each of the at least one wind turbines according to the selected control mode. The invention also relates to a control system arranged to control power output of a wind power plant (WPP), comprising at least one wind turbine connected to an electrical grid, and the control system having a state machine. 1. A method of controlling a wind power plant (WPP) , comprising at least one wind turbine connected to an electrical grid , the method , comprising:receiving a plant power reference (P_total) according to at least one electrical value of the electrical grid,managing a plurality of control modes and output signals, in relation to the plurality of control modes,selecting a control mode from the plurality of control modes, according to controller inputs and contingency at that moment in time,transferring the corresponding control values to a power controller, anddispatching a power reference to each of the at least one wind turbines according to the selected control mode.2. The method according to claim 1 , wherein the plurality of control modes includes: frequency control modes claim 1 , active power control modes or low voltage ride through modes.3. The method according to claim 1 , wherein the step of manage a plurality of control modes includes coordinate and prioritize the control modes.4. The method according to claim 1 , wherein the frequency modes includes at ...

CONTROL OF A MULTI-ROTOR WIND TURBINE SYSTEM USING A CENTRAL CONTROLLER TO CALCULATE LOCAL CONTROL OBJECTIVES

The present invention relates to control of a wind turbine system comprising a plurality of wind turbine modules mounted to a common support structure, i.e. to control of a multi-rotor wind turbine system. The invention discloses a control system for a multi-rotor wind turbine system which comprises local controllers operable to control the wind turbine modules in accordance with local control objectives and a central controller configured to monitor the operation of the wind turbine system and based thereon calculate the local control objectives. The central controller is implemented as a model predictive controller (MPC). 1. A control system for a wind turbine system comprising a plurality of wind turbine modules mounted to a common support structure , the control system comprises:a local controller operable to control the operation of a respective one of the plurality of wind turbine modules, and to issue local control commands thereto to achieve a set of local control objectives; anda central controller implementing a model predictive control (MPC) routine configured to monitor the operation of the wind turbine system and based on the operation of the wind turbine system calculate the set of local control objectives.2. The control system according to claim 1 , wherein the model predictive control routine repeatedly calculates a receding horizon trajectory for the wind turbine system and wherein the set of local control objectives is determined based on the receding horizon trajectory for the wind turbine system.3. The control system according to claim 1 , wherein the central controller is further configured to determine a current operational state of the wind turbine system claim 1 , and based on the current operational state calculate a predicted operational state trajectory of the wind turbine system claim 1 , and wherein the set of local control objectives is calculated using the predicted operational state trajectory.4. The control system according to claim ...

Kinetic energy harvesting mechanism

A kinetic energy harvesting mechanism has a fixing shaft, a rotating shell, an input member, and a fixing shaft driving assembly. The rotating shell is disposed on the fixing shaft. The input member is axially connected to the fixing shaft. The fixing shaft driving assembly is disposed in the rotating shell and has a first one-way bearing, a second one-way bearing, a first driving member, a second driving member, and a third driving member. Unidirectional transmission functions of the first one-way bearing and the second one-way bearing are adverse to each other. The first driving member is disposed in the rotating shell by the first one-way bearing. The second driving member is disposed in the rotating shell by the second one-way bearing. The third driving member is disposed in the rotating shell and is connected to the first driving member and the second driving member.

Control System and Method for Operating a Plurality of Wind Turbines

A method for operating a plurality of wind turbines, in which a first current estimated wind value is derived from operating parameters of a first wind turbine, and in which a second current estimated wind value is derived from operating parameters of a second wind turbine. A prediction model is applied to derive, from the first current estimated wind value and the second current estimated wind value, a wind prediction, applicable to a future time point, for a third wind turbine. The wind prediction is processed in a controller, in order to generate a control signal for the third wind turbine that is effective before the future time point. The invention additionally relates to an associated control system. The loading for particular wind turbines can be reduced in that the wind conditions are predicted for a future time point. 1141516. A method for operating a plurality of wind turbines ( , , ) , said method comprising:{'b': '14', 'deriving a first current estimated wind value from operating parameters of a first wind turbine ();'}{'b': '15', 'deriving a second current estimated wind value from operating parameters of a second wind turbine ();'}{'b': 28', '16, 'applying a prediction model () to said first current estimated wind value and said second current estimated wind value to derive a wind prediction applicable to a future time point for a third wind turbine ();'}{'b': 24', '16', '25, 'processing said wind prediction in a controller () to generate a control signal for the third wind turbine () that is effective before the future point in time ().'}2. The method of claim 1 , comprising:mapping the wind prediction into a geographical coordinate system by said prediction model.3. The method of claim 2 , comprising:{'b': '16', 'defining a location of said third wind turbine () by coordinates within the geographical coordinate system.'}416. The method of claim 1 , wherein said third wind turbine () draws power from the wind claim 1 , said method comprising:{'b': '16 ...

Control System and Method for Operating a Plurality of Wind Turbines

A method for operating a first wind turbine and a second wind turbine, the second wind turbine being located in the wake of the first wind turbine. A prediction model is fed with a current wind value of the first wind turbine, in order to predict a future time point at which the area swept by the rotor of the second wind turbine becomes partially overlapped by the wake of the first wind turbine. The second wind turbine reacts to the prediction in that a control signal is generated in order to alter the pitch angle of a rotor blade of the second wind turbine relative to the pitch angle of another rotor blade of the second wind turbine. The invention additionally relates to a control system suitable for executing the method. Implementation of the disclosed method by a control system can reduce the loading of the second wind turbine. 114151514. A method for operating a first wind turbine () and a second wind turbine () , the second wind turbine () being located downwind of the first wind turbine () , said method comprising:{'b': 14', '28, 'providing a current wind value of the first wind turbine () to a prediction model (), said current wind value comprising a current wind speed value or a current wind direction value;'}{'b': 28', '14', '25', '15', '30', '14, 'in said prediction model (), using the current wind value of the first wind turbine () to predict a future time point () at which an area swept by a rotor of the second wind turbine () overlaps a wake () of the first wind turbine ();'}{'b': 15', '15, 'in response to said prediction, generating a control signal to alter a pitch angle of a rotor blade of the second wind turbine () relative to the pitch angle of another rotor blade of the second wind turbine ().'}225. The method of claim 1 , wherein the control signal is generated before the future time point ().3283014. The method of claim 1 , wherein the prediction model () comprises an assumption that the wake () widens in a radial direction as a distance from ...

CONTROL FOR A WIND TURBINE

A method of controlling a wind turbine having a nacelle, a rotor, a rotating hub, a first rotor blade and at least a second rotor blade, both rotor blades being mounted to the hub. The method includes measuring the strain in the first rotor blade by a strain measurement device attached to the first rotor blade; and choosing the operational parameters of the wind turbine based on the measured strain such that fatigue damage of the second rotor blade is reduced. A wind turbine is controlled by such a method. 1. A method of controlling a wind turbine comprising a nacelle , a rotor , a rotating hub , a first rotor blade and at least a second rotor blade , both rotor blades being mounted to the hub , the method comprising:measuring the strain in the first rotor blade in a first angular position within the rotor plane by means of a strain measurement device attached to the first rotor blade, andchanging the orientation of the second rotor blade with regard to the direction of the impinging airflow such that the fatigue damage which is generated by the interaction between the second rotor blade and the airflow impinging on the second rotor blade is reduced.2. The method according to claim 1 , further comprising:determining the rotational speed of the rotor, andcalculating the expected time needed by the second rotor blade to reach the first angular position within the rotor plane, wherein the calculation is carried out based on the determined rotational speed of the rotor and the angle between the first rotor blade and the second rotor blade.3. The method according to claim 1 ,wherein the orientation of the second rotor blade with regard to the direction of the impinging airflow is changed by pitching the second rotor blade.4. The method according to claim 1 ,wherein the orientation of the second rotor blade with regard to the direction of the impinging airflow is changed by yawing the nacelle of the wind turbine.5. The method according to further comprising:calculating ...

System and Method for Protecting Wind Turbines From Extreme and Fatigue Loads

A method for protecting a wind turbine from extreme and fatigue loads associated with high wind speed events includes receiving, via a wind turbine condition estimator programmed in a turbine controller of the wind turbine, operating data indicative of current wind turbine operation. Further, the method includes determining, via the wind turbine condition estimator, a plurality of estimated wind turbine conditions at the wind turbine by solving a control algorithm having one or more equations using the operating data. The estimated wind turbine conditions include, at least, an estimated wind speed at the wind turbine and a loading proxy of the wind turbine. As such, the method includes implementing, via the turbine controller, a corrective action only when each of the estimated wind turbine conditions indicates that one or more loading conditions of the wind turbine exceeds a predetermined limit.

METHOD FOR ACQUIRING AND MODELLING AN INCIDENT WIND FIELD BY MEANS OF A LIDAR SENSOR

The object of the invention relates to a method for acquisition and modelling of an incident wind field by a LiDAR sensor. Acquisition and modelling include a step of estimating the wind amplitudes and directions for a set of discretized points, and a step of incident wind field reconstruction in three dimensions and in real time. The invention also relates to a method of controlling and/or monitoring a wind turbine equipped with such a LiDAR sensor from the incident wind field reconstructed in three dimensions and in real time. 1. A method for incident wind field acquisition and modelling by a LiDAR sensor in a space located upstream from the LiDAR sensor , wherein the method comprises the following steps:a) a step of gridding (MA) the space located upstream from the LiDAR sensor where gridding of the space is carried out with a set of discretized points positioned in a predetermined three-dimensional grid comprised of a set of cells made up of estimation points (PE) and measurement points (PM),b) a step of measuring (MES) the amplitude and the direction of the wind at the different measurement points (PM) located in the upstream space and positioned at least at two distinct distances from the LiDAR sensor, along at least three measurement axes,c) a step of estimating (EST) the wind amplitude and direction at any time (t) on all of the estimation points, and estimation is achieved through optimization by means of a weighted recursive least-squares method of a cost function that uses at least the data of measurement points (PM), wind speed spatial coherence data, wind speed temporal coherence data, as well as data qualifying the quality of the measurements performed at the measurement points,d) a step of reconstructing (MOD 3D), in real time and in a predetermined coordinate system, the incident wind field in three dimensions (3D) from the estimated and measured wind amplitudes and directions for each point of said grid (MA).4. A method as claimed in claim 1 , ...

System for Dynamic Pitch Control

The present invention relates to a system for dynamic pitch control primarily for wind turbine blades, which system calculates the pitch position of the wind turbine blades independently, which control system performs feedback regulation. The object of the pending patent application is to perform effective pitch regulation and hereby to reduce thrust on the tower and the rotor. This can be achieved if the system performs feed forward regulation of the pitch of the blades, based on the load of the previous blade in substantially the same position. Hereby it can be achieved that the actual load on the previous blade has passed the same position in relation to the wind blowing around the wind turbine. Hereby it can be achieved that measured parameters are used after a short delay to perform a very precise and highly efficient adjustment of the next wind turbine blade passing the same position. The feed forward regulation can be combined with already existing control parameters for pitch control of wind turbine blades. 1. System adapted for dynamic pitch control primarily for wind turbine blades , which system calculates the pitch angle forward position of the wind turbine blades independently , which control system performs feedback regulation of pitch regulation of each blade independently , based on at least the following input parameters:load level on each blade,power production of the wind turbinerotor speedFeed-forward of control action from preceding blade controllerwhereby the system further performs feed forward regulation of the pitch of the wind turbine blades based on the load at the blade and previous blade in relation to the angular velocity of the rotor.2. System according to claim 1 , whereby the feed forward regulation algorithm uses the resulting pitch angle from at least the preceding blade.3. System according to claim 1 , whereby the feed forward regulation algorithm uses variable time delay based on rotor angular velocity measurement.4. System ...

CONTROL OF A WIND TURBINE TAKING FATIGUE MEASURE INTO ACCOUNT

The present invention relates to control of wind turbines where a fatigue load measure is taken into account. Control of a wind turbine is described where a control trajectory is calculated based on a fatigue load measure, the fatigue load measure being determined from a predicted operational trajectory. In embodiments the predicted operational trajectories are calculated by using a model predictive control (MPC) routine, and the fatigue load measure includes a rainflow count algorithm. 1. A method of controlling a wind turbine , comprising:receiving a current operational state of the wind turbine;based on the current operational state, calculating one or more predicted operational trajectories, the one or more predicted operational trajectories include a predicted control trajectory, where a trajectory comprises a time series of at least one variable;determining at least one fatigue load measure from at least one predicted operational trajectory;determining a control trajectory based on the at least one fatigue load measure; andcontrolling the wind turbine based on the control trajectory.2. The method according to claim 1 , wherein the one or more predicted operational trajectories are calculated by optimizing at least one cost function claim 1 , and wherein the at least one fatigue load measure is included in the cost function.3. The method according to claim 1 , wherein the one or more predicted operational trajectories are calculated by optimizing at least one cost function claim 1 , and wherein the at least one fatigue load measure is included in the optimization as one or more constraints.4. The method according to claim 1 , wherein the one or more predicted operational trajectories are receding horizon trajectories with a prediction horizon claim 1 , and wherein the at least one fatigue load measure is determined for the prediction horizon.5. The method according to claim 1 , wherein the one or more predicted operational trajectories are calculated by using a ...

Wind power consumption method of virtual power plant with consideration of comprehensive demand responses of electrical loads and heat loads

The present invention discloses a wind power consumption method of a virtual power plant with consideration of comprehensive demand responses of electrical loads and heat loads, which comprises: establishing a wind turbine output model, so as to obtain a wind power prediction curve; establishing heat load demand models before/after demand responses and heat supply equipment output models before/after the demand responses, so as to obtain the abandoned wind quantities per moment before/after the demand responses and the total abandoned wind quantities before/after the demand responses; judging that whether consumption is promoted or not according to the total abandoned wind quantities before/after the demand responses; and establishing a storage battery capacity model and judging the charging/discharging state and the charging/discharging capacity of a storage battery.

CONTROL OF A WIND TURBINE TAKING NOISE INTO ACCOUNT

The present invention relates to control of wind turbines where a noise measure is taken into account. Control of a wind turbine is described where a control trajectory is calculated based on noise measure, the noise measure being determined from a predicted operational trajectory. In embodiments the predicted operational trajectories are calculated by using a model predictive control (MPC) routine. 1. A method of controlling a wind turbine , comprising:receiving a current operational state of the wind turbine;based on the current operational state, calculate one or more predicted operational trajectories, the one or more predicted operational trajectories include a predicted control trajectory, where a trajectory comprises a time series of at least one variable;determine at least one noise measure from at least one predicted operational trajectory;determine a control trajectory based on the at least one noise measure; andcontrol the wind turbine based on the control trajectory.2. The method according to claim 1 , wherein the one or more predicted operational trajectories are calculated by optimizing at least one cost function claim 1 , and wherein the at least one noise measure is included in the cost function.3. The method according to claim 1 , wherein the one or more predicted operational trajectories are calculated by optimizing at least one cost function claim 1 , and wherein the at least one noise measure is included in the optimization as one or more constraints.4. The method according to claim 1 , wherein the one or more predicted operational trajectories are receding horizon trajectories with a prediction horizon claim 1 , and wherein the at least one noise measure is determined for the prediction horizon.5. The method according to claim 1 , wherein the one or more predicted operational trajectories are calculated by using a model predictive control (MPC) routine.6. The method according to claim 1 , wherein the noise measure is determined by a wind turbine ...

Data collection system for wind turbine data

A method, controller, wind turbine, and computer program product are disclosed for collecting data from wind turbines in a wind farm. An example method generally includes receiving, from a client device, a subscription request identifying a plurality of data points to collect from a set of wind turbines. A wind farm server establishes a client interface with the client device. The wind farm server receives data points form the plurality of wind turbines and buffers the identified collected data points from the set of wind turbines in a data repository. Through the client interface, the wind farm server receives a request for data points collected from at least one wind turbine over a specified time period, and responsive to the request, transmits the requested data points to the client device. The wind farm server also may push collected data points from wind turbines to a data analysis system.

OPTIMIZATION OF A WIND FARM

Provided is a method for optimizing an operation of a wind farm. The farm includes wind turbines and each can be adjusted via operating settings, and a farm model depicting the wind farm or part thereof is used. The method comprises an optimization sequence using the farm model, with the steps: specifying an optimization wind direction in the farm model for optimizing the operation of the farm for this wind direction; varying operating settings of at least a first leading turbine of the farm model; determining effects of varying the operating settings of the first leading turbine on at least one downstream turbine of the farm model, which is aerodynamically influenced by the first leading turbine, by means of a wake model; determining a total farm result of the farm model; wherein the operating settings are varied so as to optimize the total farm result. 1. A method for optimizing an operation of a wind farm , comprising: specifying, in the farm model, an optimization wind direction for which the operation of the wind farm is to be improved;', 'varying operating settings of at least a first leading wind turbine of the farm model to improve a total farm result of the farm model;', 'determining, using a wake model, effects of the varying of the operating settings of the first leading wind turbine on at least one downstream wind turbine of the farm model, the at least one downstream wind turbine being aerodynamically influenced by the first leading wind turbine; and', 'determining the total farm result of the farm model; and, 'performing an optimization sequence using a farm model depicting the wind farm or a part of the wind farm, wherein the wind farm includes a plurality of wind turbines and each wind turbine of the plurality of wind turbines has respective operating settings that are adjustable, performing the optimization sequence includingstoring operating settings of a respective wind turbine of the plurality of wind turbines that improve the total farm result.2 ...

Operating a wind turbine with sensors implemented by a trained machine learning model

The present invention relates to a method of operating a wind turbine with an operational parameter where values of the operational parameter are obtained by different sensors and compared to determine the validity of the value. A first value and a second value of the operational parameter are obtained different sensors and validated by comparing the two values. The wind turbine being operated using a validated value as the operational parameter. The two sensors are selected among a trained machine learning model, a reference sensor and a computerized physical model.

WIND TURBINE CONTROL USING PREDICTED STEADY-STATE DEFLECTION

Controlling a wind turbine including measuring a wind speed for a location upwind of a wind turbine. Using the measured wind speed, a changed steady-state deflection of a structure of the wind turbine is predicted. The predicted changed steady-state deflection corresponds to a time when wind from the location is incident on the wind turbine. Oscillations of the structure are damped relative to the changed steady-state deflection. By damping the oscillations relative to the changed steady-state deflection, movements of the structure may be minimized when there is no predicted change in steady-state deflection, while permitting more rapid movements during transitions from one steady-state deflection to the predicted steady-state deflection, allowing more of the available power to be captured by the wind turbine. 1. A method comprising:measuring a wind speed for a location upwind of a wind turbine;predicting, using the measured wind speed, a changed steady-state deflection of a structure of the wind turbine once wind from the location is incident on the wind turbine; anddamping oscillations of the structure relative to the changed steady-state deflection.2. The method of claim 1 , further comprising:damping, based on a first average wind speed, oscillations of the structure relative to a first steady-state deflection; anddetermining a second average wind speed from the measured wind speed,wherein predicting the changed steady-state deflection is responsive to the second average wind speed differing from the first average wind speed.3. The method of claim 2 , wherein the structure is a tower of the wind turbine claim 2 , and wherein predicting the changed steady-state deflection comprises:determining a power production level of the wind turbine scheduled for the second average wind speed;determining a thrust force on the tower at the power production level; anddetermining the changed steady-state deflection of the tower based on the thrust force.4. The method of claim 1 ...

SYSTEM AND METHOD FOR PREVENTING COLLISIONS BETWEEN WIND TURBINE BLADES AND FLYING OBJECTS

A system and a method for control of a wind turbine for prevention of collisions between the rotor and flying objects such as birds, bats, and remotely-piloted aircraft is disclosed. The position and velocity of one or more flying objects is measured. The probability of the positions of the objects when they pass through the surface swept by the rotor blades is estimated. Increasing or decreasing the speed of the wind turbine rotor is performed such that the probability of collision between the rotor blades and the one or more objects is reduced or minimized, while otherwise continuing power production as usual. 1. A method of controlling a wind turbine avoiding collision between at least one flying object and at least one wind turbine rotor blade , the method comprising controlling a rotational speed of the wind turbine rotor based on at least one measured position and at least one measured velocity of the at least one flying object.2. Method according to claim 1 , further comprising:predicting a probability distribution of at least one flight path of the at least one flying object from the at least one measured position and the at least one measured velocity of the at least one flying object.3. Method according to claim 1 , further comprising:estimating a probability of collision between the at least one flying object and the at least one rotor blade.4. Method according to claim 1 , further comprising:estimating a perturbation of the rotational speed of the wind turbine rotor in order to avoid collision between the at least one flying object and the at least one rotor blade.5. Method according to claim 3 , wherein the probability of collision is estimated based on an estimated intersection between the probability distribution of the at least one flight path with a swept surface of the at least one rotor blade as a function of position and time.6. Method according to claim 1 , further comprising:measuring the at least one position and the at least one velocity of ...

MULTI-FUNCTIONAL FLAP USED AS A BACK-FLOW FLAP

The invention relates to a device of a safety system and/or resource and energy-efficiency improvement system for influencing the flow around an aero- or hydrodynamic body, preferably an aerofoil, according to the principle of a back-flow flap, characterized in that: said device, together with the aero- or hydrodynamic body, in particular aerofoil, form at least a partial shift of the delimitation of the flap region by means of the back-flow flap and the delimiting component thereof when the back-flow flap is partially and/or completely raised, thus influencing the trailing edge separation vortex/vortices and/or the flap separation vortex/vortices; and in that the delimitation of the flap region shifts completely up to or beyond the profile trailing edge, or shifts only to a section in front of the profile trailing edge. The delimitation component is movably connected to the aerofoil by means of a basic element and is preferably permanently secured and/or releasably secured for maintenance purposes, thus ensuring a long service life for the rotor blade and/or wind turbine and/or flap system, preferably >5 years, particularly preferably >10 years, and most particularly preferably >=20 years, and/or thus optionally allowing simple removal/replacement. 175-. (canceled)76. A device in the form of a wind turbine rotor blade comprising a passive or active flap system for improving the output ,comprising a base element which reinforces the rotor blade, andat least one flap attached thereto,wherein the base element comprises a support face on the rotor blade, andwherein the flap is attached to the base element so as to be movable and is formed as a passive back-flow flap.77. The device according to claim 76 , wherein the movable attachment of the flap to the base element is formed using a joint made of resilient material claim 76 , in particular in the form of film claim 76 , textiles claim 76 , in particular textiles comprising glass fibres or aramid fibres claim 76 , one ...

METHODS AND SYSTEMS FOR GENERATING WIND TURBINE CONTROL SCHEDULES

A method of generating a control schedule for a wind turbine is provided, the control schedule indicating how the turbine maximum power level varies over time, the method comprising: receiving input indicative of a target minimum wind turbine lifetime; determining a value indicative of the current remaining fatigue lifetime of the wind turbine or one or more turbine components, based on measured wind turbine site and/or operating data; and varying a parameter of an initial predefined control schedule that specifies how the turbine maximum power level varies over time. The parameter is varied by: (i) adjusting the parameter of the initial predefined control schedule; (ii) estimating the future fatigue lifetime consumed by the wind turbine or the one or more turbine components, over the duration of the varied control schedule, based upon the varied control schedule; and (iii) repeating steps (i) and (ii) until the estimated future fatigue lifetime consumed by the wind turbine or each of the one or more turbine components is sufficient to allow the target minimum wind turbine life to be reached. 1. A method of generating a control schedule for a wind turbine , the control schedule indicating how the turbine maximum power level varies over time , the method comprising:receiving input indicative of a target minimum wind turbine lifetime;determining a value indicative of the current remaining fatigue lifetime of the wind turbine or one or more turbine components, based on measured wind turbine site and/or operating data; i) adjusting the parameter of the initial predefined control schedule;', 'ii) estimating the future fatigue lifetime consumed by the wind turbine or the one or more turbine components, over the duration of the varied control schedule, based upon the varied control schedule; and', 'iii) repeating steps (i) and (ii) until the estimated future fatigue lifetime consumed by the wind turbine or each of the one or more turbine components is sufficient to allow ...

CLOUD-BASED TURBINE CONTROL FEEDBACK LOOP

A method and apparatus for applying optimized yaw settings to wind turbines including receiving operating data from at least one wind turbine on a wind farm and sending the data to a supervisory control and data acquisition (SCADA) system on the at least one wind turbine to generate current SCADA data. The current SCADA data is sent a central processing center away from the wind farm. The central processing center includes an optimization system that can generate a new look up table (LUT) including at least one new wind turbine yaw setting calculated using information comprising wind direction, wind velocity, wind turbine location in the wind farm, information from a historic SCADA database, and yaw optimizing algorithms. The new LUT is then sent to a yaw setting selection engine (YSSE) where instructions regarding the use of the new LUT are generated. 1. A method comprising ,receiving operating data from at least one wind turbine, wherein the data includes current wind turbine operating conditions, and the at least one wind turbine is located on a wind farm;sending the operating data to a supervisory control and data acquisition (SCADA) system on the at least one wind turbine;generating current SCADA data;sending the current SCADA data to an edge system, wherein the edge system is located on a local network at the wind farm;sending the current SCADA data from the edge system to a central processing center, wherein the central processing center is in a location away from the wind farm, wherein the central processing center includes an optimization system that can generate a new look up table (LUT), the new LUT including at least one new wind turbine yaw setting calculated using information comprising wind direction, wind velocity, wind turbine location in the wind farm, information from a historic SCADA database, and yaw optimizing algorithms;generating the new LUT;sending the new LUT to an optimized configuration settings system located at the local network at the ...

METHOD AND SYSTEM FOR CONTROLLING A WIND TURBINE TO REDUCE NACELLE VIBRATION

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. 1. A method of controlling a wind turbine comprising a tower supporting a rotor comprising a plurality of pitch-adjustable rotor blades , the method comprising:obtaining a movement signal indicative of a vibrational movement of the tower;determining an actuator signal based on the movement signal, the actuator signal being determined to produce a desired force to counteract the vibrational movement of the tower;determining a pitch reference offset signal for each one of the plurality of pitch-adjustable rotor blades based on the actuator signal;applying an integration of the pitch reference offset signals;determining modified pitch reference offset signals based on the integrated pitch reference offset signals; anddetermining a pitch signal for each one of the plurality of pitch-adjustable rotor blades based on the modified pitch reference offset signals.2. The method claim 1 , further comprising applying an adjustment gain to the pitch reference offset signals and determining the modified pitch reference offset signals based on the integrated pitch reference offset signals and the gain adjusted pitch reference offset signals.3. ...

WIND TURBINE CONTROL USING CONSTRAINT SCHEDULING

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. 1. A method for controlling a wind turbine , the method comprising:predicting behaviour of one or more wind turbine components over a prediction horizon using a wind turbine model that describes dynamics of the one or more wind turbine components;determining at least one behavioural constraint associated with operation of the wind turbine, wherein the at least one behavioural constraint is determined in dependence on at least one operational parameter of the wind turbine; andusing the predicted behaviour of the one or more wind turbine components in a cost function, and optimising the cost function subject to the at least one determined behavioural constraint to determine at least one control output for controlling operation of the wind turbine.2. The method of claim 1 , wherein predicting behaviour of the one or more wind turbine components comprises predicting the at least one operational parameter over the prediction horizon.3. The method of claim 2 , wherein the at least one behavioural constraint is determined in dependence on the at least one predicted operational parameter of the wind turbine.4. The ...

Method for Controlling a Wind Turbine with Increased Safety

A wind turbine with at least one rotor blade and at least one pith drive for turning the at least one rotor blade, the wind turbine comprising a controller which analyses the wind turbine if a first error situation or a second error situation occurs and wherein the controller is adapted to react to the first error situation in absence of a second error situation with a first error procedure, to a second error situation in absence of the first error situation with a second error procedure, and to an error situation where the first error and the second error occur at the same time with a third error procedure that is different to the first error procedure and to the second error procedure. 1. A wind turbine with at least one rotor blade and at least one pitch drive for turning the at least one rotor blade , the wind turbine comprising a controller which analyses the wind turbine if a first error situation or a second error situation occurs and wherein the controller is adapted to react:to the first error situation in absence of a second error situation, with a first error procedure;to a second error situation in absence of the first error situation, with a second error procedure; andto an error situation where the first error situation and the second error situation occur at the same time, with a third error procedure that is different to the first error procedure and to the second error procedure.2. The wind turbine of claim 1 , wherein:the first error situation comprises a failure of a resolver for controlling a first pitch motor of a first pitch drive;the second error situation comprises a failure of a blade encoder for measuring position of a first rotor blade of the first pitch drive; andthe third error procedure comprises at least one of interrupting a power supply to the first pitch motor, blocking a control signal for the first pitch motor, engaging a brake to block movement of the first rotor blade, requesting at least a second pitch drive of the wind turbine ...

Methods and Systems for Controlling Motion of Floating Ground Station

System and methods for controlling the oscillation of floating ground stations in aerial wind turbine systems are disclosed. Thrusters on the ground station or on one or more aerial vehicles associated with the ground station apply a compensatory force to the oscillating ground station to reduce and/or substantially eliminate wave-induced oscillations. Submerged thrusters may also rotate the ground station to a preferred alignment direction with the waves. Additionally, control systems use environmental and/or positional sensor data to develop a predictive force profile that maps desired compensatory force magnitude versus time. The control systems use that predictive force profile to direct the thrusters to apply a varying compensatory force over time. 1. A method comprising:determining an oscillation profile of a floating airborne wind turbine ground station, wherein the oscillation profile comprises a period of oscillation and an amplitude, wherein the ground station is coupled to an airborne wind turbine aerial vehicle; andapplying a compensatory force to the ground station sufficient to reduce the amplitude of the oscillation profile, wherein the compensatory force varies over time in a periodic manner.2. The method of claim 1 , wherein the aerial vehicle applies the compensatory force to the ground station.3. The method of claim 2 , wherein the aerial vehicle is coupled to the ground station via a tether claim 2 , and wherein the aerial vehicle applies the compensatory force to the ground station via the tether.4. The method of claim 1 , wherein the ground station comprises at least one submerged thruster claim 1 , wherein the at least one submerged thruster applies the compensatory force to the ground station.5. The method of claim 1 , wherein the aerial vehicle is coupled to the ground station via a tether claim 1 , wherein the ground station comprises at least one submerged thruster claim 1 , and wherein the aerial vehicle and the at least one submerged ...

ACTIVE PROMOTION OF WIND TURBINE TOWER OSCILLATIONS

The invention relates to a method for determining dynamic parameters associated with damping properties of a wind turbine. The method involves active excitation of tower oscillations by adjusting the pitch or rotor torque. After the active excitation, the parameters can be determined from the passive decay of the excited oscillations. Alternatively, the oscillations can be actively damped, so that the parameters can be determined from the active decay of the excited oscillations. The method for promoting oscillations may be triggered in response to different events or in response to predetermined times for determining the actual dynamic parameters. 1. A method of operating a wind turbine , the wind turbine comprising a tower and a rotor with at least one rotor blade , the rotor being connected to the tower and being adapted to drive a generator , wherein a pitch angle of each rotor blade is adjustable , the method comprising:actively promote tower oscillations of the tower up to a predefined oscillation threshold, and when the predefined oscillation threshold is reached the active promotion of the tower oscillations is stopped; anddetermine at least one physical parameter relating to the tower oscillation.2. The method of operating a wind turbine according to claim 1 , wherein the wind turbine is further operated to actively damp the tower oscillations claim 1 , and wherein the at least one physical parameter is determined on the basis of a decay of the oscillations caused by the active damping of the oscillations.3. The method of operating a wind turbine according to claim 1 , wherein the at least one physical parameter is determined on the basis of a decay of the oscillations caused by passive damping of the oscillations.4. The method of operating a wind turbine claim 1 , wherein the tower oscillations are promoted by adjusting the pitch angle of a rotor blade to impose an oscillating force onto the tower.5. The method of operating a wind turbine according to ...

WIND TURBINE CONTROL BASED ON FORECASTS

A method of controlling a wind turbine is provided. Data is obtained that identifies, based on forecast data, one or more future periods of time during which it would be desirable to over-rate the wind turbine, and measures of the fatigue life consumed by one or more turbine components are determined. The total fatigue life consumed by the one or more turbine components is limited prior to the one or more periods of time by controlling the power output of the wind turbine, in advance of the one or more periods of time, based upon the measure of the fatigue life consumed by the one or more turbine components. For example the overall rate of consumption of fatigue life by the one or more turbine components may be reduced prior to the one or more periods of time commencing. The wind turbine is then over-rated during the one or more identified periods. A corresponding wind turbine and wind power plant controller is also provided. 1. A method of controlling a wind turbine , the method comprising:obtaining data identifying, based on forecast data, one or more future periods of time during which the wind turbine is to be over-rated;determining measures of the fatigue life consumed by one or more turbine components;limiting the fatigue life consumed by the one or more turbine components prior to the one or more periods of time by controlling the power output of the wind turbine, in advance of the one or more periods of time, based upon the measure of the fatigue life consumed by the one or more turbine components; andover-rating the wind turbine during the one or more periods.2. A method according to wherein determining measures of the fatigue life consumed by one or more turbine components comprises:obtaining values of variables affecting the fatigue lifetime of one or more of the wind turbine's components from turbine sensors; andapplying one or more lifetime usage estimator algorithms to the variables to determine measures of the fatigue life consumed by each of the one ...

METHODS AND SYSTEMS FOR GENERATING WIND TURBINE CONTROL SCHEDULES

Methods and Systems for Generating Wind Turbine Control Schedules A method of generating a control schedule for a wind turbine is provided, the control schedule indicating how the turbine maximum power level varies over time, the method comprising: determining a value indicative of the current remaining fatigue lifetime of the turbine, or one or more turbine components, based on measured wind turbine site and/or operating data; applying an optimisation function that varies an initial control schedule to determine an optimised control schedule by varying the trade off between energy capture and fatigue life consumed by the turbine or the one or more turbine components until an optimised control schedule is determined, the optimisation including: estimating future fatigue lifetime consumed by the turbine or turbine component over the duration of the varied control schedule based on the current remaining fatigue lifetime and the varied control schedule; and constraining the optimisation of the control schedule according to one or more input constraints; wherein the optimisation further includes varying an initial value for a wind turbine lifetime, and varying an initial value for the number of component replacements, for one or more components, to be performed over the course of the schedule to determine a combination of the number of component replacements for one or more turbine components and a target minimum wind turbine lifetime. 1. A method of generating a control schedule for a wind turbine , the control schedule indicating how the turbine maximum power level varies over time , the method comprising:determining a value indicative of the current remaining fatigue lifetime of the turbine, or one or more turbine components, based on measured wind turbine site and/or operating data; estimating future fatigue lifetime consumed by the turbine or turbine component over the duration of the varied control schedule based on the current remaining fatigue lifetime and the ...

ADAPTIVE DYNAMIC PLANNING CONTROL METHOD AND SYSTEM FOR ENERGY STORAGE STATION, AND STORAGE MEDIUM

An adaptive dynamic planning control method and system for a large-scale energy storage station. The method comprises: setting a structure and control target parameters of an adaptive dynamic planning control system; initializing the parameters and importing an initial state of a controlled object; calculating an original wind electricity power fluctuation rate at a current moment t and smoothing the original wind electricity power according to a change rate control strategy; calculating a smoothed wind storage power fluctuation rate, a power of an energy storage system, and a state of charge (SOC) of the energy storage system; initializing and training an evaluation module and an execution module; calculating and saving a control strategy, a smoothed wind storage power fluctuation rate, an energy storage power and a (SOC) at each moment; and outputting the control strategy at each moment, the smoothed wind storage power fluctuation rate, the energy storage power and the (SOC). 1. A method for Adaptive Dynamic Programming (ADP) control by a power station for large-scale energy storage , comprising:setting an objective control parameter and a structure of a system for ADP control;performing parameter initialization, and importing an initialized parameter as an initial state of a controlled object;{'sub': wp', 'hybrid', 'BESS, 'sup': T', 'T, 'for a present time point t, computing a rate of turbulence of raw wind power r, smoothing the raw wind power by controlling a rate of change, and computing a rate of turbulence of wind and energy storage hybrid power rsmoothed, power P(t) of a system for energy storage, and a State Of Charge (SOC) of the system for energy storage;'}performing initialization for training an estimation module and a management module;for each time point, computing and storing a control strategy, the rate of turbulence of the wind and energy storage hybrid power smoothed, power of energy storage, and the SOC of the system for energy storage; ...

Methods for controlling wind turbine loading

Methods are provided for controlling wind turbine loading. In one embodiment, a method includes the steps of determining a current thrust value for the wind turbine, calculating a thrust differential based on the current thrust value and a predetermined maximum thrust value, calculating a desired pitch offset value based on the thrust differential and a thrust sensitivity value, and adjusting a pitch of the wind turbine utilizing the pitch offset value.

CONTROL OF A WIND TURBINE WITH A FAULT CONDITION

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. 1. A method of controlling a wind turbine , the method comprising:receiving a current operational state of the wind turbine;calculating, based on the current operational state, a control trajectory comprising a time series of at least one variable;generating, in the absence of a fault signal indicating a fault condition of the wind turbine, one or more control signals according to the control trajectory; and determining a type of the fault condition indicated by the fault signal;', 'determining, based on the type of the fault condition, a cost function of a model predictive control (MPC) routine;', 'calculating, using the MPC routine, a safe-mode trajectory comprising a time series of at least one variable; and', 'generating one or more control signals according to the safe-mode trajectory., 'responsive to receiving the fault signal2. The method according to claim 1 , wherein during safe-mode operation of the wind turbine claim 1 , the safe-mode trajectory is repeatedly calculated as a receding horizon trajectory claim 1 , andwherein generating one or more control signals according to the safe-mode trajectory comprises generating the one or more control signals using a last-calculated safe-mode trajectory.3. The method according to claim 1 , wherein the safe-mode trajectory is a shutdown trajectory.4. The method according to claim 3 , wherein the time series of the shutdown trajectory spans an entirety of a shutdown process of the wind turbine claim 3 ,wherein a ...

METHOD OF CONTROLLING A WAVE ENERGY CONVERSION SYSTEM MAXIMIZING THE POWER OUTPUT

The invention is an improved wave energy conversion system () including a model predictive control method for an energy conversion machine () that maximizes the power output by accounting for the energy conversion efficiency and a wave motion prediction (). 114-. (canceled)15. A method of controlling a wave energy conversion system that converts energy of waves into electrical or hydraulic energy , the wave energy conversion system comprising at least one mobile system that cooperates with at least one wave energy conversion machine , and the mobile system having an oscillating motion with respect to the at least one wave energy conversion machine , comprising:a) constructing a dynamic model of the wave energy conversion system relating velocity of the at least one mobile system to a force exerted by the waves on the at least one mobile system and to force exerted by the at least one wave energy conversion machine on the mobile system;b) constructing an energy model of the wave energy conversion system relating an average power generated by the at least one wave energy conversion machine to the force exerted by the at least one wave energy conversion machine on the at least one mobile system, to a velocity of the mobile system and to efficiency of the at least one wave energy conversion system;{'b': '3', 'c) predicting the force exerted by waves () on the mobile system for a predetermined time period;'}d) determining a control value of the force exerted by the at least one wave energy conversion machine on the at least one mobile system which maximizes average power generated by the at least one wave energy conversion machine, by use of the predicted force exerted by the waves on the at least one mobile system, of the dynamic model and of the energy model; ande) controlling the at least one wave energy conversion machine with the control value.16. A method as claimed in claim 15 , wherein the force exerted by the waves on the at least one mobile system is predicted ...

METHOD OF OPERATING WIND TURBINE BASED ON MAXIMUM THRUST LIMIT

A method of operating a wind turbine having a rotor. Sensor data is received from one or more sensors of the wind turbine and maximum load values are obtained on the basis of the sensor data. The maximum load values are indicative of maximum loads acting on a component of the wind turbine such as a rotor blade. An estimated extreme load value, such as a 50-year return load, is obtained on the basis of the maximum load values and compared with a reference value. A maximum thrust limit is set on the basis of the comparison, and the wind turbine is operated in accordance with the maximum thrust limit so that a wind thrust force acting on the rotor does not exceed the maximum thrust limit. 1. A method of operating a wind turbine having a rotor , the method comprising:receiving sensor data from one or more sensors of the wind turbine;obtaining maximum load values on the basis of the sensor data, wherein the maximum load values are indicative of maximum loads acting on a component of the wind turbine;obtaining an estimated extreme load value on the basis of the maximum load values;comparing the estimated extreme load value with a reference value;setting a maximum thrust limit on the basis of the comparison; andoperating the wind turbine in accordance with the maximum thrust limit so that a wind thrust force acting on the rotor does not exceed the maximum thrust limit.2. A method according to wherein the component of the wind turbine load is a blade of the rotor claim 1 , and the maximum load values are indicative of maximum forces or moments acting on the blade of the rotor in a flap-wise direction.3. A method according to wherein the component of the wind turbine load is a blade of the rotor claim 1 , and the estimated extreme load value is indicative of an estimated force or moment acting on the blade of the rotor in a flap-wise direction.4. A method according to wherein the estimated extreme load value is indicative of an estimated extreme load acting on the component ...

REDUCING CURTAILMENT OF WIND POWER GENERATION

Historical power output measurements of a wind turbine for a time period immediately preceding a specified past time are received. Historical wind speed micro-forecasts for the wind turbine for a time period immediately preceding the specified past time and for a time period immediately following the specified past time are received. The historical wind speed micro-forecasts are converted to wind power values. Based on the historical power output measurements and the wind power output values, a machine learning model for predicting wind power output is trained. Real-time power output measurements of the wind turbine and real-time wind speed micro-forecasts for the wind turbine are received. The real-time wind speed micro-forecasts are converted to real-time wind power values. Using the machine learning model with the real-time power output measurements and the real-time wind power values, a wind power output forecast for the wind turbine at a future time is outputted. 1. A method comprising:receiving, by a computer, historical electrical power output measurements of a wind turbine for a time period immediately preceding a specified past time;receiving, by the computer, historical wind speed micro-forecasts for the geographic location of the wind turbine, for a time period immediately preceding the specified past time and for a time period immediately following the specified past time;converting, by the computer, the historical wind speed micro-forecasts to wind power output values;generating, by the computer, based on the historical electrical power output measurements and the wind power output values, a trained machine learning model for predicting wind power output of the wind turbine;receiving real-time electrical power output measurements of the wind turbine and real-time wind speed micro-forecasts for the geographic location of the wind turbine;converting, by the computer, the real-time wind speed micro-forecasts to real-time wind power output values; ...

Reducing curtailment of wind power generation

Historical power output measurements of a wind turbine for a time period immediately preceding a specified time are received. Historical wind speed micro-forecasts for the wind turbine for a time periods immediately preceding the specified past time and immediately following the specified past time are received. The historical wind speed micro-forecasts are converted to wind power values. Based on the historical power output measurements and the wind power output values, a machine learning model for predicting wind power output is trained. Real-time power output measurements of the wind turbine and real-time wind speed micro-forecasts for the wind turbine are received. The real-time wind speed micro-forecasts are converted to real-time wind power values. Using the machine learning model with the real-time power output measurements and the real-time wind power values, a wind power output forecast for the wind turbine at a future time is outputted.

Reducing curtailment of wind power generation

Historical power output measurements of a wind turbine for a time period immediately preceding a specified time are received. Historical wind speed micro-forecasts for the wind turbine for a time periods immediately preceding the specified past time and immediately following the specified past time are received. The historical wind speed micro-forecasts are converted to wind power values. Based on the historical power output measurements and the wind power output values, a machine learning model for predicting wind power output is trained. Real-time power output measurements of the wind turbine and real-time wind speed micro-forecasts for the wind turbine are received. The real-time wind speed micro-forecasts are converted to real-time wind power values. Using the machine learning model with the real-time power output measurements and the real-time wind power values, a wind power output forecast for the wind turbine at a future time is outputted.

REDUCING CURTAILMENT OF WIND POWER GENERATION

Historical power output measurements of a wind turbine for a time period immediately preceding a specified time are received. Historical wind speed micro-forecasts for the wind turbine for a time periods immediately preceding the specified past time and immediately following the specified past time are received. The historical wind speed micro-forecasts are converted to wind power values. Based on the historical power output measurements and the wind power output values, a machine learning model for predicting wind power output is trained. Real-time power output measurements of the wind turbine and real-time wind speed micro-forecasts for the wind turbine are received. The real-time wind speed micro-forecasts are converted to real-time wind power values. Using the machine learning model with the real-time power output measurements and the real-time wind power values, a wind power output forecast for the wind turbine at a future time is outputted. 1a computer-readable storage medium, and program instructions stored on the computer-readable storage medium, which when executed by a computer cause the computer to perform a method comprising:receiving, by a computer, historical electrical power output measurements of a wind turbine for a time period immediately preceding a specified past time, wherein the historical electrical power output measurements of the wind turbine for a time period immediately preceding a specified past time comprise a predefined number of measurements at equal time intervals, ending at the specified past time;receiving, by the computer, historical wind speed micro-forecasts for the geographic location of the wind turbine, for a time period immediately preceding the specified past time and for a time period immediately following the specified past time, wherein the historical wind speed micro-forecasts for the geographic location of the wind turbine for a time period immediately preceding the specified past time and for a time period immediately ...

Control of a wind turbine with a fault condition

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.

Wind turbine and method for ice removal in wind turbines

A wind turbine is disclosed which comprises a control system configured to execute at least one ice removal routine which comprises a heating stage of at least one of the blades ( 3 ), and a mechanical removal ice stage. A wind turbine removing ice method is also disclosed which comprises a stage wherein the presence of ice is detected on at least one of the blades and, once said presence of ice is detected, comprises a stage wherein at least one ice removal routine is activated which comprises, in turn, a heating stage of at least one of the blades and a mechanical removing ice stage on at least said blade.

WIND TURBINE CURTAILMENT CONTROL FOR VOLANT ANIMALS

A system can include a data server that calculates a risk level of each of a plurality of wind turbines at a turbine site based at least in part on a base risk level and mortality data that characterizes a mortality of a volant animal caused by a given wind turbine of the plurality of wind turbines. The system can also include a turbine monitor server that stores the risk level of each wind turbine in a database and generates a graphical dashboard based on data in the database. The system can further include a turbine site control server that retrieves data from the database and sets cut-in speed of each of the plurality of wind turbines based on the data retrieved from the database. 1. A system comprising:a data server that calculates a risk level of each of a plurality of wind turbines at a turbine site based at least in part on a base risk level and mortality data that characterizes a mortality of a volant animal caused by a given wind turbine of the plurality of wind turbines;a turbine monitor server that stores the risk level of each wind turbine in a database and generates a graphical dashboard based on data in the database; anda turbine site control server that retrieves data from the database and sets a cut-in speed for each of the plurality of wind turbines based on the data retrieved from the database.2. The system of claim 1 , wherein the data server receives environmental data that identifies a bat species at risk for a given wind turbine of the plurality of wind turbines claim 1 , and the bat species at risk raises the risk level for the given wind turbine independently from the mortality data.3. The system of claim 1 , wherein the mortality data is updated daily.4. The system of claim 3 , wherein the turbine site comprises a plurality of turbine sites.5. The system of claim 2 , wherein each base risk level is based on a plurality of risk factors corresponding to a geographical location of an associated wind turbine.6. The system of claim 5 , wherein ...

WIND FARM CONTROLLER, CONTROLLED UNITS AND METHOD FOR TRANSMITTING CONTROL VARIABLES FROM THE WIND FARM CONTROLLER TO THE CONTROLLED UNITS

Provided is a method for transmitting controlling control variables from a windfarm controller to units including at least one wind power installation at least one energy store. The method include determining first and second controlling control variable components by the windfarm controller, outputting the first controlling control variable component in a first data packet, outputting the second controlling control variable component in a second data packet, receiving the first and second data packets by a first unit, and determining a controlling control variable from the first and second controlling control variable components. The first data packet has a receiver address which is assigned to the first unit and to at least one further unit, and the second data packet has a receiver address which is assigned to at least the first unit. Provided is a windfarm controller, a wind power installation and a windfarm configured to perform the method. 1. A method for transmitting control variables from a controller to wind power installations or energy stores , comprising:determining a first control variable component;determining, by the controller, a second control variable component;outputting the first control variable component in a first data packet;outputting the second control variable component in a second data packet;receiving, by at least one wind power installation or energy store, the first data packet including the first control variable component;receiving, by the at least one wind power installation or energy store, the second data packet including the second control variable component; anddetermining, by the at least one wind power installation or energy store, a control variable from the first control variable component and the second control variable component;wherein the first data packet has a first receiver address that is assigned to the at least one wind power installation or energy store and to at least one further wind power installation or energy ...

REACTIVE POWER PRODUCTION OF WIND TURBINE GENERATORS WITHIN WIND WAKE ZONE

A method, computer program product, and wind power plant are disclosed for controlling power production of the wind power plant comprising a plurality of wind turbine generators. The method comprises defining, based on received wind information, a wind wake zone comprising one or more first wind turbine generators of the plurality of wind turbine generators. The method further comprises increasing a reactive power production of at least one of the one or more first wind turbine generators of the wind wake zone. 1. A method of controlling power production of a wind power plant comprising a plurality of wind turbine generators , the method comprising:defining, based on received wind information, a wind wake zone comprising one or more first wind turbine generators of the plurality of wind turbine generators; andincreasing a reactive power production of at least one of the one or more first wind turbine generators of the wind wake zone, relative to one or more of the plurality of wind turbine generators excluded from the wind wake zone.2. The method of claim 1 , wherein a reactive power production is increased for at least two of the one or more first wind turbine generators claim 1 , wherein an amount of reactive power increase of the at least two of the one or more first wind turbine generators is based on relative active power ratings of the at least two of the one or more first wind turbine generators.3. The method of claim 1 , wherein the wind information comprises wind speed information claim 1 , the method further comprising:selecting the one or more first wind turbine generators based on a corresponding wind speed less than a rated wind speed of the one or more first wind turbine generators.4. The method of any of claim 1 , wherein the wind information comprises wind direction information claim 1 , and wherein the wind wake zone is defined relative to one or more second wind turbine generators of the plurality of wind turbine generators.5. The method of claim 1 ...

SYSTEM AND METHOD FOR DETECTING TURBINE UNDERPERFORMANCE AND OPERATION ANOMALY

A method of correcting turbine underperformance includes calculating a power production curve using monitored data, detecting changes between the monitored data and a baseline power production curve, generating operability curves for paired operational variables from the monitored data, detecting changes between the operability curves and corresponding baseline operability curves, comparing the changes to a respective predetermined metric, and if the change exceeds the metric, providing feedback to a turbine control system identifying at least one of the paired operational variables for each paired variable in excess of the metric. A system and a non-transitory computer-readable medium are also disclosed. 1. A method of correcting turbine underperformance , the method comprising:accessing monitored operational data for the turbine;calculating a power production curve using at least a portion of the monitored operational data;predicting a baseline power production curve based on expected performance of the turbine;detecting a first set of changes between at least the portion of the monitored operational data and the baseline power production curve;generating one or more monitored operability curves from the at least a portion of the monitored operational data, each of the one or more monitored operability curves describing a relationship between monitored values for paired operational variables;generating one or more baseline operability curves for the turbine, each of the one or more baseline operability curves describing an expected relationship between the paired operational variables;detecting a set of changes between the one or more monitored operability curves and a corresponding one of the one or more baseline operability curves;comparing one or more of the set of changes to a respective predetermined metric for each of the paired operational variables; andbased on a determination that one or more members of the set of changes is in excess of the respective ...

VERIFICATION OF WIND TURBINE NACELLE YAW POSITION SENSOR

The invention relates to techniques for verifying a nacelle yaw position sensor installed on a wind turbine and for taking restorative action to control the nacelle yaw position. The invention relates to a method performing the comprising determining a first absolute wind direction signal associated with the first wind turbine; determining a second absolute wind signal direction signal associated with the plurality of other wind turbines; comparing the two wind direction signals; and issuing a nacelle yaw position sensor fault signal if the first signal is beyond a predetermined error range of the second signal. A benefit of the invention is that it enables the detection of an inaccurate nacelle yaw sensor without direct measurement or inspection. 1. A method of verifying a nacelle yaw position sensor associated with a first wind turbine in a wind farm including a plurality of other wind turbines , the method comprising:determining a first absolute wind direction signal associated with the first wind turbine;determining a second absolute wind signal direction signal associated with the plurality of other wind turbines;comparing the first absolute wind direction signal to the second wind direction signal; andissuing a nacelle yaw position sensor fault signal in the event that first absolute wind direction signal is beyond a predetermined error range of the second wind direction signal.2. The method of claim 1 , wherein the second absolute wind direction signal represents an averaged value absolute wind direction for the plurality of other wind turbines.3. The method of claim 2 , wherein the second wind direction signal represents a weighted average value.4. The method of claim 1 , wherein claim 1 , in response to the issuance of the fault signal claim 1 , using the second absolute wind direction signal to determine an estimated nacelle yaw position signal associated with the first wind turbine.5. The method of claim 4 , wherein the estimated nacelle yaw position ...

CONTROL OF A WIND TURBINE BASED ON OPERATIONAL TRAJECTORY VALIDATION

The present invention relates tocontrol of wind turbines based on predicted operational trajectories. A control system for a wind turbineis described wherea main controller calculating one or more predicted operational trajectories and a safety controller validates at least one of the one or more predicted operational trajectories. The control system controls the wind turbine with the predicted control trajectory if the validation is valid, and controls the wind turbine with a safe-mode control trajectory if the validation is invalid. In an embodiment, the main controller is implemented as a receding horizon controller, e.g. in the form of a model predictive controller (MPC). 1. A control system for a wind turbine , comprising:a main controller arranged for calculating one or more predicted operational trajectories, the one or more predicted operational trajectories include a predicted control trajectory, where a trajectory comprises a time series of at least one variable;a safety controller arranged for receiving the one or more predicted operational trajectories and validating in accordance with at least one validation routine at least one of the predicted operational trajectories as a valid operational trajectory for a future time slot, to determine whether or not the operational trajectory is valid or invalid;wherein the control system controls the wind turbine with the predicted control trajectory if the validation is valid, and controls the wind turbine with a safe-mode control trajectory if the validation is invalid.2. The control system according to claim 1 , wherein the main controller is further arranged for calculating a predicted operational state trajectory claim 1 , and wherein the one or more predicted operational trajectories further comprise the predicted operational state trajectory.3. The control system according to claim 1 , wherein the main controller is further arranged for calculating one or more predicted safe-mode control trajectories and ...

WIND TURBINE CONTROL SYSTEM COMPRISING IMPROVED UPSAMPLING TECHNIQUE

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. 1. A wind turbine control unit comprising an upsampling module configured to:receive a first control signal comprising a current control sample value and a predicted control trajectory;calculate a second control signal in dependence on the current control sample value and the predicted control trajectory, wherein the second control signal has a higher frequency than the first control signal; andoutput the second control signal for controlling an actuator.2. The control unit of claim 1 , wherein the second control signal comprises a first control sample value that corresponds to a current control sample value of the first control signal claim 1 , and one or more further control sample values based on the predicted control trajectory.3. The control unit of claim 2 , wherein the upsampling module calculates the one or more further control sample values using an interpolation function applied to the current control sample value and one or more sample values of the predicted control trajectory and which is based on a ratio of sampling rates of the control module and the actuator system.4. The control unit of claim 3 , wherein the interpolation function includes a first order interpolation function that uses a single sample value of the predicted control trajectory.5. The control unit of claim 4 , wherein the single sample value of the predicted control trajectory immediately follows the current control sample value.6. The control unit of claim 3 , wherein the interpolation function ...

WIND TURBINE METEOROLOGICAL DATA COLLECTION AND PROCESSING SYSTEM

Provided is a wind turbine meteorological data collection and processing system that includes at least one wind turbine having a plurality of sensors configured to sense data including weather-related data, a controller configured to control the plurality of sensors, a processor configured to process the data, and a transmitter configured to transmit the data. The system also includes a computing platform in communication with the at least one wind turbine and to receive the data from the at least one wind turbine, and sort the data based on geographical location of the at least one wind turbine. 1. A wind turbine meteorological data collection and processing system comprising:at least one wind turbine comprising:a plurality of sensors configured to sense data including weather-related data,a controller configured to control the plurality of sensors,a processor configured to process the data, anda transmitter configured to transmit the data; anda computing platform in communication with the at least one wind turbine and configured to: i) receive the data from the at least one wind turbine, and (ii) sort the data based on geographical location of the at least one wind turbine.2. The system of claim 1 , further comprising:a web application configured to be initiated at a user device by a user, for accessing the data from the computing platform in real-time or automatically at predetermined time intervals.3. The system of claim 1 , wherein the data includes data related to at least one of temperature claim 1 , humidity claim 1 , barometric pressure claim 1 , air quality data claim 1 , wind speed and direction claim 1 , cloud content claim 1 , solar activity claim 1 , water level claim 1 , wave height claim 1 , water temperature and tidal current.4. The system of claim 1 , wherein the data collected by the sensors is transmitted via wireless communication to the microcontroller or directly to the processor in communication with the microcontroller claim 1 , for ...

Method for operating a wind turbine or a wind farm

Thus, a method for operating a wind turbine, a wind farm or the like and a power-to-gas unit connected electrically thereto is provided. The wind turbine or the wind farm generates electric power if there is sufficient wind and feeds this power into an electrical grid connected to the wind turbine or to the wind farm. Each wind turbine is operated with a predetermined power curve. Electric power is generated by the wind turbine or the wind farm once a first wind speed (starting wind) has been reached. The wind turbine or the wind farm is in a partial-load operating mode as long as the wind speed is between the first wind speed (starting wind) and a second wind speed (nominal wind). The wind turbine or the wind farm is in a nominal power range when the wind speed is in a range which is greater than the second wind speed (nominal wind speed). Electric power generated by the wind turbine or the wind farm, preferably at least a predetermined proportion of said power, is consumed in the power-to-gas unit, with the result that a combustible gas, in particular hydrogen and/or methane gas or the like, is generated in the power-to-gas unit. The proportion of the electric power which is generated by the wind turbine or the wind farm in the partial-load operating mode and is not consumed in the power-to-gas unit is set to be virtually constant for a predetermined time segment, for example 10 minutes or more, for example 1 hour.

CLOUD-BASED TURBINE CONTROL FEEDBACK LOOP

A method and apparatus for applying optimized yaw settings to wind turbines including receiving operating data from at least one wind turbine on a wind farm and sending the data to a supervisory control and data acquisition (SCADA) system on the at least one wind turbine to generate current SCADA data. The current SCADA data is sent a central processing center away from the wind farm. The central processing center includes an optimization system that can generate a new look up table (LUT) including at least one new wind turbine yaw setting calculated using information comprising wind direction, wind velocity, wind turbine location in the wind farm, information from a historic SCADA database, and yaw optimizing algorithms. The new LUT is then sent to a yaw setting selection engine (YSSE) where instructions regarding the use of the new LUT are generated. 1. A method comprising , receiving operating data from at least one wind turbine , wherein the data includes current wind turbine operating conditions , and the at least one wind turbine is located on a wind farm;sending the operating data to a supervisory control and data acquisition (SCADA) system on the at least one wind turbine;generating current SCADA data;sending the current SCADA data to an edge system, wherein the edge system is located on a local network at the wind farm; sending the current SCADA data from the edge system to a central processing center, wherein the central processing center is in a location away from the wind farm, wherein the central processing center includes an optimization system that can generate a new look up table (LUT), the new LUT including at least one new wind turbine yaw setting calculated using information comprising wind direction, wind velocity, wind turbine location in the wind farm, information from a historic SCADA database, and yaw optimizing algorithms; generating the new LUT;sending the new LUT to an optimized configuration settings system located at the local network at ...

SYSTEMS AND METHODS FOR ADAPTING COMPRESSOR CONTROLLER BASED ON FIELD CONDITIONS

An antisurge controller for a turbocompressor system stores multiple control algorithms in a memory for the antisurge controller. The antisurge controller identifies capabilities of field devices in the turbocompressor system. The field devices include an antisurge valve and multiple sensors. The antisurge controller selects one of the multiple control algorithms based on the identified capabilities and applies the selected control algorithm to the turbocompressor system. The selected control algorithm provides the smallest surge control margin, of the surge control margins in the multiple control algorithms, that are supported by the identified capabilities. 1. A method of antisurge control for a turbocompressor system including an antisurge controller , the method comprising:storing, in a memory of the antisurge controller, multiple control algorithms;identifying, by the antisurge controller, capabilities of field devices in the turbocompressor system, wherein the field devices include an antisurge valve and multiple sensors;selecting, by the antisurge controller, one of the multiple control algorithms and one or more operating features of the field devices based on the identified capabilities; andapplying, by the antisurge controller, the selected control algorithm to the turbocompressor system.2. The method of claim 1 , further comprising:receiving process feedback from the field devices;determining, by the antisurge controller, that the process feedback has a monitoring impact;identifying, by the antisurge controller and in response to the determining, updated capabilities of field devices in the turbocompressor system; andselecting, by the antisurge controller, another one of the multiple control algorithms based on the updated capabilities.3. The method of claim 2 , wherein receiving the process feedback from the field devices includes:receiving raw data from the field devices.4. The method of claim 2 , wherein receiving the process feedback from the field ...

POWER BOOST OF A WIND TURBINE USING MODEL PREDICTIVE CONTROL

The present disclosure relates to a control of a wind turbine in connection with power boosting or fast increase of active power production. A boost command is received () and based on the current operational state and the boost level a predicted control trajectory is calculated using a model predictive control (MPC) routine (). The wind turbine is controlled using the calculated control trajectory during the power boost (). 1. A method of controlling a wind turbine , comprising:receiving a boost command to request a power boost to increase an electrical power production, the boost command comprises a boost level;receiving a current operational state of the wind turbine;based on the current operational state and the boost level, calculating one or more predicted operational trajectories using a model predictive control (MPC) routine, wherein the one or more predicted operational trajectories include a predicted control trajectory comprising a time series of at least one variable; andcontrolling the wind turbine using the predicted control trajectory during the power boost.2. The method according to claim 1 , wherein the electrical power production is increased by imposing one or more constraints in the model predictive control routine.3. The method according to wherein the electrical power production is increased by imposing a minimum value of the requested generated power (Pg) as a constraint in the model predictive control routine.4. The method according to wherein the power boost comprises a boost period during which the electrical power production is increased and a rotor of the wind turbine is decelerated followed by a recovery period where the electrical power drops and the rotor is accelerated claim 1 , wherein the method further comprises:increasing the electrical power production is by imposing a first minimum value of the requested generated power (Pg) as a constraint in the model predictive control routine during the boost period, the first minimum value ...

INDIVIDUAL PITCH CONTROL FOR WIND TURBINES

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. 1. A method of controlling pitch of individual blades in a wind turbine , the method comprising:determining wind speed as a function of azimuthal angle;predicting wind speed for an individual blade over a prediction horizon using the determination of wind speed as a function of azimuthal angle; andusing the predicted wind speed for each individual blade in a performance function, and optimizing the performance function to control pitch of the individual blades.2. The method of claim 1 , further comprising determining forces acting on an individual blade over the prediction horizon.3. The method of claim 2 , comprising determining in-plane forces and out-of-plane forces acting on the individual blade.4. The method of claim 1 , comprising determining azimuthal angle of an individual blade over the prediction horizon using predicted rotor speed.5. The method of claim 1 , wherein wind speed as a function of azimuthal angle is determined from predicted rotor speed and blade load for individual blades.6. The method of claim 1 , wherein the wind speed is predicted for an individual blade over a prediction horizon using an extended Kalman filter.7. The method of claim 1 , wherein the performance function is a model predictive control function.8. The method of claim 7 , wherein the model predictive control function comprises one or more of a tilt and yaw load reduction; side-side tower damping; andtower clearance control.9. The method of claim 1 , wherein optimizing the performance function comprises performing a ...

IMPROVING ANNUAL ENERGY PRODUCTION OF WIND TURBINE SITES

A method of estimating the energy production of a wind turbine or group of wind turbines is described. The method comprises obtaining, from a climate library, climate data in respect of a selected geographical location, the climate data comprising wind speed and direction at the selected geographical location, generating a plurality of power curves, each power curve defining a power output of a wind turbine as a function of wind speed for a particular climatic condition or range of climatic conditions, and estimating an energy production for the wind turbine or group of wind turbines using the generated power curves and wind speed data. 1. A method , comprising:obtaining, from a climate library, climate data in respect of a selected geographical location, the climate data comprising wind speed and direction at the selected geographical location;generating a plurality of power curves, each power curve defining a power output of a wind turbine as a function of wind speed for a particular climatic condition or range of climatic conditions; andestimating an energy production for the wind turbine using the generated power curves and wind speed data.2. A method according to claim 1 , wherein the energy production is estimated by weighting the contribution of each power curve in accordance with the expected relative frequency of the climatic conditions to which those power curves relate.3. A method according to claim 1 , wherein the wind speed data used in the estimating step is based on wind speed measurements taken at the selected geographical location.4. A method according to claim 3 , wherein the wind speed measurements are measurements of wind speed and direction taken at a particular height using a met mast at the selected geographical location.5. A method according to claim 1 , wherein the wind speed data used in the estimating step is obtained from the climate library.6. A method according to claim 1 , wherein the obtained climate data comprises wind speed and ...

Energy generating system and method

An energy generating system for transforming energy of fluid flow into electric energy, the system, at least in operation, comprising: a flow-changing member having a peripheral rim and mounted in a fluid path having a path surface, so as to be at least partially surrounded by said path surface, said flow-changing member being displaceable between a first position, in which at least a portion of the rim is spaced from a corresponding portion of the path surface to a first extent and a second position, in which said portion of the rim is spaced from said portion of the fluid path surface to a second extent greater than said first extent, so that increase of total volumetric flow rate of said fluid above a predetermined threshold to an increased volumetric flow rate is configured to induce displacement of said flow-changing member from said first position toward said second position, thereby causing the volumetric flow rate of said fluid at said spacing to be above said increased volumetric flow rate; and a turbine mounted in fluid communication with said fluid path at a location other than said spacing, whereby said displacement causes the volumetric flow rate of said fluid at said turbine to be below said increased volumetric flow rate.

VERTICAL-AXIS WIND TURBINE

A wind turbine is disclosed. The wind turbine may include a discoidal chassis and at least one vane disposed on the discoidal chassis. The discoidal chassis can rotate about a central axis. The discoidal chassis has a first outermost surface with a pitch angle between the central axis and another axis orthogonal to the central axis. The vane is disposed on the first outermost surface. The vane has a concave surface to assist in rotation of the discoidal chassis about the central axis by harnessing wind energy. 1. A wind turbine comprising:a discoidal chassis configured to rotate about a central axis, the discoidal chassis having a first outermost surface with a pitch angle between the central axis and an axis orthogonal to the central axis; anda vane disposed on the first outermost surface of the discoidal chassis, the vane including a concave surface configured to harness wind energy and rotate the wind turbine.2. The wind turbine of further comprising:a second outermost surface subjacent to the first outermost surface, the second outermost surface configured to harness wind energy to generate lift for the wind turbine along the central axis.3. The wind turbine of claim 2 , wherein the pitch angle is a first pitch angle claim 2 , and the second outermost surface comprises:an angled portion spanning from a peripheral surface of the second outermost surface, the angled portion including a second pitch angle between 20 and 40 degrees relative to the axis orthogonal to the central axis; anda flat portion spanning from the central axis to the angled portion of the second outermost surface, the flat portion parallel to the axis orthogonal to the central axis.4. The wind turbine of claim 2 , wherein the pitch angle is a first pitch angle claim 2 , the second outermost surface has a second pitch angle of 30 degrees between the central axis and the axis orthogonal to the central axis claim 2 , wherein the second pitch angle of the second outermost surface is opposite to the ...

Active flutter control of variable pitch blades

A gas turbine engine includes a plurality of blades, a sensor configured to detect vibration on one or more of the plurality of blades, and a controller coupled to the sensor and configured to adjust a blade incidence upon an onset of vibration being detected by the sensor wherein the adjustment of the blade incidence reduces the vibration.

START-UP ALGORITHM FOR AN IMPLANTABLE BLOOD PUMP

A system and a method for starting a rotor of an implantable blood pump are described. For example, a blood pump system includes a rotary motor having a stator and a rotor. The rotor has permanent magnetic poles for magnetic levitation of the rotor, and the stator has a plurality of pole pieces arranged circumferentially at intervals. The blood pump system includes a controller configured to control a start phase of the rotor, wherein the start phase is prior to the rotor being positioned in a predefined geometric volume for pumping blood and wherein the start phase includes performing a rotation of the rotor by an angle larger than an angle corresponding to a quarter of an angular distance between two neighboring magnetic poles of the rotor. 1. A method for starting a rotor of an implantable blood pump , the method comprising:performing an initial rotation of the rotor by an angle larger than an angle corresponding to a quarter of an angular distance between two neighboring magnetic poles of the rotor; andafter the performing, rolling the rotor from a first start position to a first target position prior to pumping blood, wherein a magnet of the rotor experiences a reduced magnetic attraction at the first target position compared to the first start position.2. The method of claim 1 , wherein the angle of the rotation is about half of the angular distance between two neighboring magnetic poles of the rotor or a multiple thereof.3. The method of claim 1 , wherein the angle of the initial rotation is between about 45 and about 270 degrees.4. The method of claim 1 , wherein the angle of the initial rotation is about 90 degrees.5. The method of claim 1 , further comprising:determining a current position of the rotor by using one or more Hall sensors;performing a take-off operation attempting to move the rotor into the predefined geometric volume; anddetermining if the rotor is positioned within the predefined geometric volume after performing the take-off operation.6. ...

Computer System & Method for Predicting an Abnormal Event at a Wind Turbine in a Cluster

The example systems, methods, and devices disclosed herein generally relate to performing predictive analytics on behalf of wind turbines. In some instances, a data-analytics platform defines and executes a predictive model for a specific wind turbine. The predictive model may be defined and executed based on operating data for the specific wind turbine and for other wind turbines that experience similar environmental conditions as the specific wind turbine and that are operating in an expected operational state. In response to executing the predictive model, the data-analytics platform may cause an action to occur at the specific wind turbine or cause a user interface to display a representation of the output of the executed model, among other possibilities. 1. A non-transitory computer-readable medium having program instructions stored thereon that are executable to cause a computing system to: identifying a historical-time-varying wind-turbine cluster that the given wind turbine was a member of during a period of time in the past, wherein the historical-time-varying wind-turbine cluster comprises a plurality of past-active wind turbines that were active during at least a portion of the period of time; and', 'based at least on (i) historical operating data for each of the plurality of past-active wind turbines and (ii) historical operating data for the given wind turbine, defining the predictive model related to the operation of the given wind turbine;, 'for each given wind turbine of a plurality of wind turbines, defining a predictive model related to the operation of the given wind turbine, wherein defining the predictive model comprises identifying a wind-turbine cluster that the given wind turbine is a member of, wherein the wind-turbine cluster comprises a plurality of active wind turbines including the given wind turbine;', 'based at least on (i) recent operating data for at least one of the plurality of active wind turbines other than the given wind turbine ...

Wind turbine control system comprising improved upsampling technique

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.

PUMP SYSTEM WITH LEAK DAMAGE PROTECTION

A pump leak protection system includes a fluid sensor, which alerts of a leak and/or stops a pump from operating upon detection of fluid outside a pump chamber. Thus, potential damage due to leakage of fluid through the pump chamber and/or damaged diaphragm may be mitigated or prevented. 1. An electric diaphragm pump comprising:a pump head assembly in a first housing;a motor assembly in a second housing;a fluid sensor; and wherein the first housing is coupled to the second housing,', 'wherein said pump head assembly includes a seal comprising a diaphragm between a pump chamber and a diaphragm drive chamber, said pump being a single diaphragm pump,', 'wherein the diaphragm drive chamber includes diaphragm drive components configured to drive a pumping motion of the diaphragm,', 'wherein fluid may be pumped through the pump chamber via said pumping motion,', 'wherein the seal is configured to prevent said fluid from leaking out of the pump chamber,', 'wherein the fluid sensor is configured to detect a presence of fluid which has leaked outside of the pump chamber,', 'wherein the fluid sensor is located within a cavity of the diaphragm drive chamber, and', 'wherein the leak alert system is configured to indicate that fluid has been detected by the fluid sensor and wherein the shut-off control system is configured to stop operation of the pump based on fluid being detected by the fluid sensor., 'a leak alert system and/or pump shut-off system,'}2. The electric diaphragm pump of claim 1 , wherein said fluid sensor comprises a first probe claim 1 , a second probe claim 1 , and a base supporting said first probe and said second probe claim 1 ,wherein said first probe and said second probe are spaced apart by an air gap, wherein the presence of fluid across the air gap creates a conductive path between the first probe and the second probe, andwherein said first probe and said second probe are components of a circuit which activates said leak alert system and/or said shut- ...

Madson wind turbine system

The already patented Madson Wind Turbine System (MWTS) embodies a wind turbine system for the collection of wind energy, compression of air (air or gas) in multi-stages to high pressure, for High Pressure—Compressed Air Energy Storage (HP-CAES), decompression of air in multi-stages, cooling of hot compressed air, harvesting of compression heat for heating cold decompressed air to increase volume & air flow for more efficient generation of electricity. This new invention constitutes a significant improvement of MWTS thru improved: ability to resist typhoons, cyclones & hurricanes, harvesting & directing hub area wind to the propellers, streamlining of wind for more efficient use by downstream wind turbines, harvesting of compression heat to heat decompressed cold air, simplification of equipment & construction by reducing the number of or combining the function of components, such as, the functions of transfer & regulator valves in previous inventions for lower capital & maintenance costs & greater efficiency; the introduction of new beneficial components, such as, uncloggable transfer valves; the avoidance of hazards, such as, bird strikes & nuisances, such as, flutter, pulse & vertigo and other improvements for the generation, storage and dispatch of electricity. This improvement also includes an HP-CAES Reserve Tank, constructed with Bolted Joints, such that it can be assembled quickly & cheaply without welding, de-stressing & spherical or thick plates; the elimination of, at least, one (1) built-in derrick and the development of self-regulating controls for feathering the propellers adapted to a Fan Wind Turbines instead of the conventional long aspect ratio sails (propellers).

System and Method for Mitigating Damage in a Rotor Blade of a Wind Turbine

A method for mitigating damage in a rotor blade of a plurality of rotor blades of a wind turbine includes receiving a plurality of acceleration signals from the plurality of the rotor blades in at least one direction. The method also includes generating a spectral density for each of the plurality of acceleration signals. Further, the method includes determining blade energies for each of the plurality of rotor blades based on the spectral densities for each of the plurality of acceleration signals for at least one predetermined frequency range. Moreover, the method includes comparing the blade energies to at least one of each other or a predetermined damage threshold. In addition, the method includes implementing a control action when one or more of the blade energies vary from each other by a predetermined amount or one or more of the blade energies exceed the predetermined damage threshold.

THRUST BALANCE CONTROL OF A MULTIROTOR WIND TURBINE BASED ON CONSTRAINTS

A method for controlling a multirotor wind turbine is disclosed. A first operational state of each of the energy generating units of the wind turbine is obtained. A difference in thrust acting on at least two of the energy generating units is detected. At least one constraint parameter of the set of operational constraints is adjusted in accordance with prevailing operating conditions and in accordance with the detected difference in thrust, and a new operational state for at least one of the energy generating units is derived, based on the at least one adjusted constraint parameter, the new operational state(s) counteracting the detected difference in thrust. Finally, the wind turbine is controlled in accordance with the new operational states for the energy generating units. 1. A method for controlling a wind turbine , the wind turbine comprising a support structure and at least two energy generating units mounted on the support structure , each energy generating unit comprising a rotor comprising a set of wind turbine blades , the energy generating units being operable within a set of operational constraints , the method comprising:obtaining a first operational state of each of the energy generating units,detecting that a difference in thrust acting on at least two of the energy generating units is present,adjusting at least one constraint parameter of the set of operational constraints in accordance with prevailing operating conditions and in accordance with the detected difference in thrust,{'b': '5', 'deriving a new operational state for at least one of the energy generating units (), based on the at least one adjusted constraint parameter, the new operational state(s) counteracting the detected difference in thrust, and'}controlling the wind turbine in accordance with the new operational states for the energy generating units.2. The method of claim 1 , wherein the adjusting at least one constraint parameter comprises adjusting a load constraint relating to at ...

WIND TURBINE WITH TRAILING EDGE FLAP

A rotor blade for a wind turbine having an aerodynamic profile which extends from a blade root up to a blade tip and has a leading edge and a trailing edge. An adjustable aerodynamic flap, which can be adjusted between a retracted and a deployed position by means of a flap drive, is provided on the rotor blade. The flap drive comprises a passive control system which controls a flap position depending on rotation speed. The passive control system of the flap drive is low-maintenance and does not interfere with the safety concept of a wind turbine. In comparison with a reference rotor blade without a flap, the rotor blade has increased lift at low wind speeds. 1. A rotor blade for a wind turbine , comprising: havinga body having an aerodynamic profile extending from a blade root to a blade tip, and having a leading edge and a trailing edge,an adjustable aerodynamic flap arranged on the body, anda flap drive configured to adjust the adjustable aerodynamic flap between a retracted position and a deployed position, wherein the flap drive comprises a passive control system configured to control a flap position depending on rotation speed.2. The rotor blade as claimed in claim 1 ,wherein the flap drive is made from an electrically non-conductive plastic.3. The rotor blade as claimed in claim 1 , wherein the flap drive has claim 1 , as a drive source to generate force claim 1 , a centrifugal body claim 1 , and an elastic element providing an elastic force that exceeds a centrifugal force generated by the centrifugal body up to a predetermined rotation speed of the rotor on which the rotor blade is arranged.4. The rotor blade as claimed in claim 1 , wherein the flap drive comprises a gear mechanism.5. The rotor blade as claimed in claim 1 , further comprising a locking mechanism configured to lock the adjustable aerodynamic flap claim 1 , wherein the adjustable aerodynamic flap is configured to be locked in the retracted position.6. The rotor blade as claimed in claim 1 , ...

ROTOR SPEED CONTROL OF A WIND TURBINE

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. 1901090. A method () for controlling rotor speed of a wind turbine () , the method () comprising:{'b': 92', '26', '12', '26', '25, 'defining () a system model () describing resonance dynamics of a wind turbine component (), the system model () having a nonlinear input term ();'}{'b': 94', '32', '26', '29', '12', '29', '38', '40, 'applying () a transform () to the system model () to obtain a transformed model () for a response oscillation amplitude of the wind turbine component (), the transformed model () having a linear input term (, );'}{'b': 96', '30', '10', '30', '29', '12, 'defining () a wind turbine model () describing dynamics of the wind turbine (), the wind turbine model () including the transformed model () of the wind turbine component (); and,'}{'b': 98', '72', '30', '86', '100', '86', '10, 'applying () a model-based control algorithm () using the ...

Wind Turbine Operation

Methods of operating a variable speed wind turbine as a function of wind speed are described. The wind turbine has a rotor with a plurality of blades and a generator. The generator has a design rotor speed which varies so as to follow a theoretical generator rotor rotational speed curve describing the rotational speed of the rotor as a function of wind speed. The method comprises determining an erosion risk condition of the blades, determining erosion damage of one or more of the blades accumulated over time and changing the rotor rotational speed from the design rotor speed as a function of the determined erosion risk condition and the determined accumulated erosion damage. Wind turbines configured to carry out such methods are also described.

Power control method and apparatus for wind power generator

A power control method and apparatus for a wind power generator. The power control method comprises: predicting, according to historical wind resource data, wind resource data within a predetermined future time period (S10); estimating, according to the remaining design lifetime of a wind power generator, the maximum design lifetime allowed to be consumed within the predetermined future time period (S20); determining, according to the predicted wind resource data and the estimated maximum design lifetime, optimal output powers of the wind power generator in respective wind velocity ranges within the predetermined future time period (S30); and controlling operation of the wind power generator according to the determined optimal output powers of the wind power generator in the respective wind velocity ranges within the predetermined future time period (S40).

METHOD AND SYSTEM FOR WASTEGATE CONTROL

Methods and systems are provided for controlling a wastegate coupled to a turbine. In one example, a method may include during steady engine operation, actuating a wastegate to introduce an oscillation in boost pressure, and updating gain of a wastegate feedback controller responsive to the oscillation in boost pressure. 115-. (canceled)16. An engine system , comprising:a turbocharger;a wastegate coupled to a turbine of the turbocharger;a throttle controlling air intake to an engine intake manifold;a sensor upstream of the throttle for sensing a boost pressure; andan engine controller configured with computer readable instructions stored on non-transitory memory for: during steady engine operation, actuating the wastegate to induce boost pressure oscillation, and actuating the throttle responsive to the boost pressure oscillation; and', 'updating the gain of the wastegate feedback controller based on the boost pressure oscillation., 'actuating the wastegate via a wastegate feedback controller;'}17. The system of claim 16 , wherein the engine controller is further configured to update the gain of the wastegate feedback controller based on peaks and zero-crossings of the sensed boost pressure.18. The system of claim 16 , wherein the throttle is actuated to maintain a constant manifold air pressure.19. The system of claim 16 , further include an electric motor claim 16 , and the engine controller is further configured for using electric motor to compensate impact of boost pressure oscillation on engine torque output.20. The system of claim 16 , wherein the engine controller is further configured for oscillating torque generated by a generator to maintain a constant vehicle torque output. The present description relates generally to methods and systems for controlling a wastegate with a wastegate feedback controller, wherein parameters of the wastegate feedback controller may be updated during engine operation by inducing an oscillation in boost pressure.Internal ...

MODULATING WIND POWER PLANT OUTPUT USING DIFFERENT FREQUENCY MODULATION COMPONENTS FOR DAMPING GRID OSCILLATIONS

A method, controller, wind power plant, and computer program product are disclosed for operating a wind power plant comprising a plurality of wind turbines, the wind power plant producing a plant power output. The method comprises receiving a modulation request signal indicating a requested modulation of the plant power output, the requested modulation specifying a modulation frequency. The method further comprises generating a respective power reference signal for each of at least two wind turbines of the plurality of wind turbines selected to fulfill the requested modulation, Each generated power reference signal includes a respective modulation component corresponding to a portion of the requested modulation and having a frequency different than the modulation frequency. 1. A method of operating a wind power plant comprising a plurality of wind turbines , the wind power plant producing a plant power output , the method comprising:receiving a modulation request signal indicating a requested modulation of the plant power output, the requested modulation specifying a modulation frequency; andgenerating a respective power reference signal for each of at least two wind turbines of the plurality of wind turbines selected to fulfill the requested modulation,wherein each generated power reference signal includes a respective modulation component corresponding to a portion of the requested modulation and having a frequency different than the modulation frequency.2. The method of claim 1 , wherein the frequency of the modulation component of the generated power reference signal is one of: greater than or equal to twice the modulation frequency claim 1 , and less than or equal to half the modulation frequency.3. The method of claim 1 , wherein generating the power reference signal to include the respective modulation component is performed in response to determining that the modulation frequency corresponds to a predetermined susceptible frequency at which at least one of ...