|| List of recent Wind Turbine-related patents
|Method of operating a wind farm|
Method of operating a wind farm comprising a plurality of wind turbines, each of the turbines having a plurality of blades, the method comprising determining a possible wake situation at a first wind turbine caused by a second wind turbine, the second wind turbine being located upstream of the first wind turbine, and individually adapting the blades of the second wind turbine such that a wake generated by the second wind turbine is deflected away from the first wind turbine.. .
|Disablement of wind turbines in a wind park|
Embodiments of the invention generally relate to wind turbine generators, and more specifically to the deactivation of wind turbines in a wind turbine park. A wind park controller may be configured to retrieve data indicating fatigue experienced by each wind turbine of the wind turbine park, and deactivate those turbines determined to be the most fatigued, thereby increasing the lifetime of turbines in the wind turbine park..
|Wind turbine auxiliary drive system|
Wind turbine auxiliary drive system comprising a motor, a drive pinion, a bearing and a lubrication system, the bearing comprising an outer bearing ring, an inner bearing ring and, between these two bearing rings, one or more rows of rolling elements which allow both bearing rings to rotate relative to each other, the inner bearing ring having an inner side comprising a gear which meshes with the drive pinion, wherein a height of the gear in an axial direction is smaller than the height of the inner bearing ring such that a gearless portion is defined, and wherein at least one lubricant inlet and/or at least one lubricant outlet is arranged on said gearless portion.. .
|Wind turbine blade|
A rotor blade including a blade root, an aft-swept portion, and straight portion. The blade root defines a pitch axis for the rotor blade.
|Segmented ballast base support structure and rail and trolley structures for unstable ground|
Unstable ground is found in many situations in many locations around the world and causes such locations to be unsuitable for building without further support or stabilization. Unstable ground, such as landfills, can be used for beneficial purposes as opposed to lying dormant.
|Distributed power generation interface|
Described herein are methods, systems, and apparatus for a controller for a power circuit that interfaces distributed power generation with a power distribution grid, comprising: a first portion, including a maximum power point tracker, that receives signals corresponding to the distributed power generation voltage and current, and outputs to the power circuit a signal for controlling the voltage of the distributed power generation; a second portion, including a current reference generator, a current controller, and a dc voltage controller, that receives signals corresponding to a dc voltage of the power circuit, the power distribution grid voltage and current, and the inverter current, and outputs signals for controlling the power circuit output voltage; wherein the current reference generator includes nonlinear circuit elements and generates a current reference signal from the dc voltage of the power circuit and the grid voltage and current; such that substantially harmonic-free power is injected into the power distribution grid. The distributed power generation may be, for example, a photovoltaic module or a wind turbine..
A wind turbine is provided to overcome the low conversion rates of existing thermal wind turbines, which are unable to meet the growing demand for power. A wind turbine tower (7) is provided with a shaft (3) that extends vertically from the bottom or the middle of the tower to the top of the tower.
|System and methodology for a wind turbine|
A wind turbine having discrete sets of magnets on the turbine support and the turbine rotor, creating repelling forces and spaces therebetween. The reduction of friction between the turbine rotor and the turbine support allows for an increase in energy production and scale of the wind turbines..
|Platform for generating electricity from flowing fluid using generally prolate turbine|
A platform-like device for generating electricity from moving fluids has two has at least two fluid turbines coupled to one another through a frame. The fluid turbines are adapted to rotate in opposite directions.
|System and method for controlling power output from a wind turbine or wind power plant|
A lidar or other remote sensing apparatus is mounted on a wind turbine to sense one or more wind parameters. An extreme event detector processing signals from the lidar to determine whether a given sensed parameter will, when it arrives at the turbine, exceed a predetermined value and represent an extreme event.
|System and method for controlling a wind turbine including conrolling yaw or other parameters|
A system and method for controlling a wind turbine, including controlling yaw or other parameters. In accordance with an embodiment, each of several basic operating parameters of a wind turbine can be measured to provide turbine operating parameters, including both turbine current parameters and turbine operating extremes.
|Variable input synchronous output drivetrain for wind turbine|
A wind turbine drivetrain is disclosed. The wind turbine drivetrain includes a planetary gearbox.
|Wind turbine and method for adjusting rotor blade pitch angle in wind turbine|
Wind turbines and methods for adjusting pitch angles of rotor blades in wind turbines are provided. A method includes monitoring an operational value of the wind turbine, and providing the operational value to a controller, the controller utilizing a proportional integral derivative control algorithm to adjust the pitch angle.
|Enhanced stability crane and methods of use|
An enhanced stability crane (100) is described. Embodiments include a telescoping main support mast (114) upon which a crane base (106) resides.
|Renewable energy system|
An integrated renewable energy system is provided for a tall multi-story building including solar, wind, and hydrogen subsystems. The solar subsystem includes a plurality of photovoltaic panels to produce a first source of electrical energy and a concentrated solar thermal system for producing a second source of electrical energy.
|Method of repairing a wind turbine blade|
A method of repairing a wind turbine blade while mounted on a tower without removing the blade from the tower is provided. The method includes positioning the wind turbine blade in a substantially vertical orientation.
|System and method for energy distribution|
A dispatch planner (dp) is a component in an energy system controller that controls the operation of energy resources interconnected into one energy system to provide optimal energy management for a customer. In one embodiment, the energy storage system includes an electric load, dispatchable sources of energy such as an electrical grid, diesel generators, combined heat and power generators; renewable sources of energy such as photo-voltaic cells and wind turbines; and stored energy resources such as electrochemical batteries or pumped hydro reserves..
|Wind turbine rotor blade de-icing arrangement|
A de-icing arrangement of a wind turbine rotor blade is provided. The de-icing arrangement includes an electrically conductive mat, an electrically conductive band for distributing an electric current along a first edge of the mat, and a current supply connector for connecting the band to a current supply, wherein at least the electrically conductive mat is embedded in the body of the rotor blade.
|Method and apparatus for controlling an operational parameter of a wind turbine|
A method for operating a wind turbine is described. The wind turbine includes a tower having a tower axis, and a nacelle being rotatable about the tower axis.
|Wind turbine with two sets of blades and method of operation thereof|
An air turbine has two sets of blades concentrically mounted on a rotatable shaft. The two sets of blades are housed separately and an air supply for the turbine enters an air inlet of a first housing to drive a first set of blades and exits from the first housing to a second housing through an air transfer opening to drive the second set of blades in the same direction, the air exiting the second housing through an air outlet.
|Method of operating a wind turbine|
A method of operating a variable speed wind turbine as a function of a wind speed is disclosed. The method comprises following a power curve describing the operation of the wind turbine as a function of wind speed in steady-state conditions.
|Rolling bearing, notably used in a wind turbine|
A rolling bearing including an inner ring, an outer ring and at least one row of angular contact rollers disposed between raceways provided on the rings, each roller comprising a rolling surface in contact with said raceways and two opposite end faces. The inner and outer rings having guiding faces coming into contact with the end faces of the rollers..
|Device for positioning a rope access technician in relation to a blade of a wind turbine|
A device for positioning a rope access technician next to a blade of a wind turbine, including a rigid spine, one or more clamp assemblies with each clamp assembly connected to the rigid spine and each clamp assembly capable of clamping to a blade of a wind turbine, and a lower platform connected to a lower portion of the rigid spine with a substantially flat top surface on which a technician may sit, stand or place items.. .
|Floating wind turbine platform with ballast control and mooring system|
A floating wind turbine platform includes stabilizing columns, a tower, water-entrapment plates connected to the stabilizing columns, and a ballast control system. The tower is mounted over one of the columns.
|Generation of renewable energy from mass air flow|
Systems and methods for generating reliable renewable energy using mass airflow generated from the vertical and/or horizontal movement of transport equipment, such as elevator cars. For example, elevator cars inside an elevator shaft may be used to generate renewable and reliable energy.
|Direct-drive wind turbine|
A direct driven wind turbine and the main bearing used in such a wind turbine is provided. The rotating drive train is connected with a stationary part of the wind turbine via at least one bearing, which allows the rotation of the drive train in relation to the stationary part.
|Direct-drive wind turbine|
A direct driven wind turbine with a plain bearing and a service method for this bearing is provided. A rotor is directly connected with a rotatable drive train, which is directly connected with a rotor of an electrical generator.
|Offshore wind turbine generator connection arrangement and tower system|
An offshore wind turbine generator comprises an elongated, buoyant tower, having an internal service tube, the service tube extending from the lower end of the tower to above the waterline when in use, a connection arrangement comprising an upper connection assembly, and a lower connection assembly. An intermediate tension/torsion leg is arranged between the upper and lower connection assemblies.
|Acoustic noise monitoring system for a wind turbine|
The present invention relates to an acoustic noise monitoring system for a wind turbine, comprising: a microphone for monitoring acoustic noise, the microphone adapted to be mounted to the exterior of a wind turbine nacelle; an input, the input adapted to receive operating conditions data from a wind turbine; a processor, the processor adapted to receive data from the microphone and the input; and storage memory, adapted to store the acoustic noise data and the operating conditions data. The processor is adapted to apply a transfer function to said acoustic noise data to correlate said data with a set of acoustic noise data measured at a remote location from the wind turbine.
|Wind power generation apparatus|
There is provided a wind power generation apparatus capable of suppressing power consumption in an airflow generation device, and securely suppressing flow separation on a blade surface, thereby improving efficiency. A wind power generation apparatus 10 of an embodiment has wind turbine blades 32 each having, in a chord length direction, a base blade 51 fixed to a rotation shaft and a front divided blade 50 fixed in a pivotally adjustable manner, a first electrode 41 and a second electrode 43 which are disposed separately via a dielectric 42 on a blade surface of at least one of the base blade 51 and the front divided blade 50, and a discharge power supply 61 capable of applying voltage between the first electrode 41 and the second electrode 43..
|Apparatus for manipulating a wind turbine blade and method of blade handling|
Apparatus for manipulating a wind turbine blade and method of blade handling an apparatus for manipulating a wind turbine blade having fixed lifting points (2) on the blade has a blade turner base (36,62,82,100), a frame like support structure (34,64,84,112) carried on the base and connecting structures such as brackets (32,138) which engage in the lifting points (2) on the blade extending into openings in the blade, the support structure (34,64,84,112) having a part-circular portion or periphery at which it connects to the base, being movably supported on the base so as to rotate relative thereto about a substantially horizontal axis in order to vary the orientation of a blade supported thereon.. .
|Method for optimizing the operation of a wind turbine|
A method for optimizing the operation of a wind turbine having a rotor with at least one rotor blade, a tower, and a wind turbine controller, comprises determining a first load status of the wind turbine based on metereological data acquired by sensors, including a turbulence intensity; determining a second load status of the wind turbine based on mechanical loads on at least one wind turbine component; and increasing a load of the wind turbine, if the determined first and second load status of the turbine are within selectable load limits. A wind turbine implementing the method is also disclosed..
|Apparatus for testing a power source|
A load device for applying an active load to a power source such as a wind turbine is characterized by an inductance and a resistive element both connected in parallel with the source. A relay is connected in series with the inductance and the resistive element and a controller is connected with the relays to selectively connect the inductance or resistive element with the source.
|Method and apparatus for operating a wind turbine|
A method for operating a wind turbine is provided. The wind turbine includes a rotor with at least one rotor blade.
|Interlocking shape for use in construction members|
Interlocking support posts form an interlocking rack system which may have a single mold which provides both a male and a female joinder member. Between the support posts can be mounted panels such as solar panels.
|Wind turbine rotor blade|
A wind turbine rotor blade is provided. The wind turbine rotor blade includes at least two blade sections and a connector for connecting adjacent blade sections, which connector has an inner connecting part of a first blade section and an outer connecting part of a second blade section, wherein the outer connecting part is adapted to enclose the inner connecting part; and a first seal arranged about a connecting part such that an outer surface of the inner connecting part, an inner surface of the outer connecting part, and the first seal form a mould; and an adhesive layer introduced to fill the mould.
|Wind turbine blade and wind turbine generator havign the same|
A wind turbine blade attached to a hub of a wind turbine generator is provided with a blade body; a first covering layer covering at least a leading edge in a first region including a tip part of the blade body; and a second covering layer covering at least the leading edge in a second region of the blade body, the second region being disposed on a hub side of the first covering layer, and the first covering layer has a higher erosion resistance than the second covering layer.. .
|Wind turbine blade mounting system|
A wind turbine blade mounting system for use with variable-pitch wind turbine blades (100) having reduced diameter blade roots. For each wind turbine blade (100) to be installed on a nose cone structure (20) of a wind turbine nacelle, the mounting system incorporates a high capacity bearing assembly (106) configured with an outwardly-opening tapered inner sleeve (105) to engage a tapered shank section (104) of an associated wind turbine blade in a self-locking coupling, thereby facilitating assembly and disassembly of the wind turbine blades from a nose cone structure (20)..
|Tool and a method for moving a wind turbine drivetrain component|
The invention includes a tool for moving a drive train component in a nacelle of a horizontal axis wind turbine, the nacelle comprising a nacelle structure (55, 56), the component being connected, in operation of the wind turbine, to a rotor(51) of the wind turbine, the tool comprising—at least one carrier (403, 405, 4041) adapted to be connected to the component, to carry the weight of the component, and to be supported by the nacelle structure, and—at least one drive unit (407) adapted to be connected to the nacelle structure and to the carrier, so as to provide a force between the nacelle structure and the carrier, so as to drive the carrier with the component in a direction parallel to the rotational axis of the rotor.. .
|Method of detecting a degree of yaw error of a wind turbine|
A method of determining a degree of yaw error of a wind turbine is provided. The method includes obtaining wind pressure measurement values from in front of the rotor plane, which wind pressure measurement values exhibit a periodic nature related to a rotation of a spinner of the wind turbine, performing a signal processing step to process the wind pressure measurement values to determine a phase offset of the wind pressure measurement values relative to an angular reference, and deriving a yaw error angle from the phase offset.
|Extension tip sleeve for wind turbine blade|
A wind blade is provided. The wind blade includes a body having an aerodynamic contour extended between a blade root and a blade tip.
|Sealing system and method of maintaining a clean environment in a wind turbine by absorbing lubricant used in the pitch or yaw bearings|
A sealing system for a wind turbine comprises first component and a second component positioned proximate the first component and movable relative thereto. An absorbent element is secured to the first component and comprises an oil-absorbent material.
|Method for controlling a wind turbine|
The present invention concerns a method of controlling a wind power installation having a generator with a stator, a pole wheel with at least two rotor poles with a respective pole winding for producing a magnetic field guided in the respective rotor pole, and an air gap between the stator and the pole wheel, including the steps— controlling a respective exciter current through each pole winding,— varying at least one of the exciter currents relative to at least one further one of the exciter currents, and/or— varying at least one of the exciter currents in dependence on the position of the pole wheel in relation to the stator.. .
|Laminated core assembly|
The invention relates to a laminated core assembly of an electric generator, in particular of a generator of a gearless wind turbine. The laminated core assembly comprises at least one laminated core, at least one winding arranged around the laminated core, and an electrical insulating means arranged between the laminated core and the winding, wherein the insulating means has a composite material for conducting the heat arising in the winding..
|Wind turbine apparatus powered by wind generated from building cooling and chiller unit|
Wind turbine apparatus of two embodiments of vertical 12 and horizontal 10 structural tubing bolted together with generator 20 and blades 22, horizontally paralleling building chilling 18 and cooling unit 40, bolted into foundation surface. The structural tubing is made of weather resistant material consisting of metal, aluminum, hard plastic, or wood.
|Mould for precast concrete element production|
The present invention can be included in the technical field of moulds for precast concrete element production and relates to a mould for precast concrete element production wherein the relative position of the side walls that define the upper and lower flanks of the precast concrete element is defined by elements that are independent from the rest of the mould, as well as to the manufacturing process that uses the aforementioned mould for precast concrete element production, the precast concrete element thus obtained and a wind turbine comprising, in turn, at least one precast concrete element produced using said mould.. .
|Joints for connecting blade segments of a wind turbine rotor blade|
Joints for connecting a first blade segment to a second blade segment of a wind turbine rotor blade include a first bolt comprising a first proximal end connected to the first blade segment and a first distal end connected to the second blade segment, a second bolt comprising a second proximal end connected to the first blade segment and a second distal end connected to the second blade segment, and a third bolt comprising a third proximal end connected to the first blade segment and a third distal end connected to the third blade segment. At least two of the first bolt, the second bolt and the third bolt differ in size, and a first distance between the first bolt and the second bolt is different than a second distance between the second bolt and the third bolt..
|Wind turbine rotor blades with fiber reinforced portions and methods for making the same|
Methods of manufacturing a fiber reinforced portion of a wind turbine rotor blade include disposing a continuous fiber mat adjacent a prefabricated layer, wherein the continuous fiber mat comprises randomly arranged reinforcing fibers and wherein the prefabricated layer comprises reinforcing fibers and a cured polymeric resin. The method further includes disposing a structural layer adjacent the continuous fiber mat opposite the prefabricated layer, wherein the structural layer comprises reinforcing fibers.
|Control method for a wind turbine|
A method of controlling a wind turbine comprising blades attached to a rotor hub for rotation in a rotor plane and a control system for individually pitching the blades relative to the hub. The method comprises dividing the rotor plane into a number of sectors, determining the individual sectors for each blade during the rotation by means of an azimuth angle sensor, and obtaining blade sensor data from a blade sensor on an individual blade relating to a sector, and comparing the obtained data with data relating to the same sector and representing blade sensor data on other blades.
|Method and system for shutting down a wind turbine|
A method and system for shutting down a wind turbine is presented. The method includes determining one or more pitch positions for one or more rotor blades of the wind turbine such that a sum of potential energy and kinetic energy in the wind turbine is minimized.
|Vertical axis dual vortex downwind inward flow impulse wind turbine|
A wind-powered turbine has a housing with an inlet and an outlet. Located in the housing is a cylindrical stator array having a plurality of spaced-apart stators located in it.
|Solar panel wind turbine communication server network apparatus method and mechanism|
The method included herein is an alternative energy wireless solar panel wind turbine communication server appliance node mechanism with built in communications server array, wireless energy and communications mechanism with protection, sharing, storage, accessing, authentication, battery management, certification, processing attachment and tracking mechanisms. The method and mechanism is utilized via networked servers, solar panels, and wireless electronic devices (online and offline) as well as mobile (wireless) communications devices built into one waterproof, temperature, controlled self-sensing hardware package.
|Wind turbine power generator|
A wind turbine generator, particularly designed for de-centralized and mobile use, having a generally spherical shape formed from multi-bladed hemispheres connected at the equator of the spherical shape is disclosed. The inventive wind turbine generator is designed to be smaller in size, lighter in weight, and, in certain preferred embodiments, readily portable to permit installation in a wide variety of locations, including residential and business structures, as well as part of public and private infrastructures, including by way of example bridges, tunnels, and water towers..
|Advanced methods and systems for generating renewable electrical energy|
Disclosed embodiment provides enclosed wind and hydropower energy generation being disposed with electrical energy generation apparatus, comprising advanced methods and systems for maximizing net impact on wind turbine operations. The enclosed wind and hydropower energy generation provides an effective environment for turbine maintenance scheduling, refurbishment, and replacement.
|Wind turbine having a hts generator with a plurality of phases|
The present invention relates to a wind turbine having a wind turbine tower with a nacelle provided on the top to which a rotor hub with one or more wind turbine blades is rotatably mounted by a rotor shaft. A generator is arranged in the nacelle, wherein the superconducting rotor coils induce a current in the stator coils when the rotor is rotated, and wherein the stator coils are arranged in at least four phases.
|Control system, method and program, and floating wind turbine generator provided therewith|
The control system of this floating wind turbine generator is a control system of a floating wind turbine generator in which the control system controls a pitch angle control section by a pitch angle instruction value calculated on the basis of signals detected by a second sensor detecting a relative angle between a nacelle and a tower and a third sensor detecting a yaw angle from a reference position of the tower so that a signal detected by a first sensor detecting wind direction deviation relative to a vertical direction of a rotation plane of wind turbine blades indicates an angle within a predetermined range from the vertical direction of the rotation plane of the wind turbine blades, and controls a yaw driving device by a yaw driving instruction value calculated on the basis of the signals detected by the second sensor and the third sensor.. .
|Wind turbine assembly system|
The wind turbine assembly system of the present invention comprises a lifting structure comprising at least first structural support elements configured to transmit stresses to the wind turbine tower during the hoisting of a wind turbine component and a crane configured to displace the wind turbine component towards the tower axis, the system further comprising a displaceable climbing element with respect to the lifting structure by means of guiding mechanisms, the displaceable climbing element incorporating second structural support elements dimensioned to at least partly support the weight of the lifting structure, where the first structural support elements are displaceable so that their relative position can vary with respect to the lifting structure.. .
|Method of mounting a wind turbine|
An installation apparatus for handling a component of a wind turbine is provided. The installation apparatus includes a base, a support portion and an extensible arm having opposing ends connected to the support portion and the base, respectively.
|Determining the energy yield loss of a wind turbine|
A method for determining an energy yield loss of a first wind turbine (1-49) of a wind farm (51) that includes a plurality of wind turbines (1-49). The first wind turbine (1-49) is operated in a reduced energy yield mode that is outside an energy-optimized normal operating mode and a reduced energy yield of the first wind turbine (1-49) is determined.
|System and method for energy distribution|
A system and method for controlling the distribution of energy from a plurality of energy resources to a load. The system includes an energy system controller to control the distribution of energy to an electric load provided by a plurality of energy resources.
|Chordwise lay-up of fibre sheet material for turbine blades|
The present invention relates to a fibre sheet material and method of laying up fibre sheet material to manufacture wind turbine blades. The invention further comprises a blade manufactured by the method as well a use of such a blade.
|Root assemblies with external structural connection supports for rotor blades|
Root assemblies for rotor blades include a root portion having an inner surface and an outer surface, wherein the root portion is configured to extend from an airfoil portion of the rotor blade. The root assemblies further include at least one external structural connection support connected to at least the inner surface or the outer surface of the root portion, wherein the at least one external structural connection support connects to a hub of a wind turbine to facilitate the connection of the rotor blade..
|Collision avoidance system for a wind turbine|
A collision avoidance system and a wind turbine includes a tower, a rotor coupled to the tower and a nacelle coupled to the rotor such that at least one of the tower, the rotor and the nacelle include one or more acoustic retroreflectors. Particularly, the acoustic retroreflectors are designed to reflect acoustic waves corresponding to a designated frequency range back to a source of the acoustic waves..
|Wind turbine and the operation method of the same|
An operating method for a two-bladed wind turbine which comprises a rotor including two blades and a hub to which the two blades are coupled, the operating method includes a pitch-angle adjusting step of adjusting pitch angles of the two blades such that chords of the two blades are substantially parallel to a perpendicular direction to a rotational plane of the rotor during violent wind and a rotor holding step of holding the rotor at an azimuth angle such that the two blades are substantially parallel to a horizontal direction during the violent wind.. .
|Control system and method for mitigating loads during yaw error on a wind turbine|
A control system for mitigating loads on a wind turbine comprising a plurality of blades in yaw error events includes a yaw error calculation unit for calculating a yaw error of the wind turbine, a pitch angle reference command calculation unit for calculating a plurality of pitch angle reference commands respectively corresponding to the plurality of blades at least based on the calculated yaw error, and a controller for producing a plurality of pitch commands at least based on the plurality of pitch angle reference commands, to respectively regulate the pitch angles of the plurality of blades.. .
|Direct-drive wind turbine|
A direct driven wind turbine and a main bearing used in such a wind turbine is provided. A rotor of the wind turbine is directly connected with a rotating drive train of the wind turbine, the rotating drive train is directly connected with a rotor of an electrical generator of the wind turbine.
|Offshore wind turbine on offset floating support|
The present invention relates to an offshore wind turbine on a floating support (1) comprising either a rotor with a horizontal rotation axis (horizontal-axis wind turbine hawt) or a rotor with a vertical rotation axis (vertical-axis wind turbine vawt) with the rotor being mounted on a floating support having a principal axis. According to the invention, the principal axis of the floating support is offset by an angle α with respect to either the axis of a tower carrying the horizontal-axis rotor or to the rotation axis of the vertical-axis rotor..
|Air-gap secure system for a wind turbine|
Disclosed is a wind turbine, which comprises a rotatable structure being coupled to a hub of the wind turbine and to a generator rotor comprising a brake disc, a stationary structure being coupled to a generator stator and comprising a stator frame and a safety bearing element. The rotatable structure is rotatably coupled to the stationary structure, wherein the stator frame (102) comprises a brake mounting section to which a calliper brake is mountable such that the brake disc is breakable by the mounted calliper brake.
|Systems, devices and methods for improving efficiency of wind power generation systems|
According to some aspects of the invention, a turbine, such as a wind turbine, is provided that includes one or more fluid (e.g., air) flow components for inducing a secondary fluid flow that emanates from a rearward location on the turbine to minimize wake effects. According to some aspects of the invention, arrays of turbines, such as in wind farms, are provided that comprise a plurality such turbines.
|System and method for controlling speed and torque of a wind turbine during post-rated wind speed conditions|
A method and system for controlling a wind turbine generator detect wind speeds and, at a first defined wind speed, control generator torque and generator rotational speed to achieve a pre-defined power for the wind turbine generator at the first defined wind speed. As wind speed increases beyond the first defined wind speed, one of generator torque or generator rotational speed is increased and the other of generator rotational speed or generator torque is proportionally decreased to maintain the generator power substantially constant at the pre-defined power..
|Method of wind turbine yaw angle control and wind turbine|
The present invention relates to the wind power engineering and to the method of controlling a yaw angle of the wind turbine, equipped with a horizontal rotor shaft as well as to the wind turbine for implementing the method. According to the method of the present invention, the time difference between the time moments when the rotor blades are in the lower vertical position, the said time moments derived from the reference signal of the sensor connected to the rotor shaft, and the time moments when the blades are on one line with the wind direction and the tower, the said time moments_derived from the periodic signal of the spurious amplitude modulation generated by the ac generator and caused by aerodynamic interaction between the blades and the tower, is used as the indication of actual position of the wind turbine rotor relative to the wind direction.
|Variable diameter and angle vertical axis turbine|
A wind turbine, particularly vertical axis, whose diameter is extensible and retractable, either from the length of the arms or the angle of the blades, or both, has advantages in operating in low wind speed regimes and surviving in high wind speed, regimes. The current application describes how to construct such a turbine, particularly the control mechanisms and the optimal aerodynamic configurations of the blades..