|| List of recent Wind Turbine-related patents
| Wind turbine maintenance optimizer|
A service planning engine may predict the future wind speed at a wind farm as well as the future price of energy of the utility grid coupled to the wind turbines. Based on the predicted values, the service planning engine identifies times to perform maintenance when lost revenue is minimized—e.g., when the predicted price of energy is low.
| Forecasting output power of wind turbine in wind farm|
A method and apparatus for forecasting output power of wind turbine in a wind farm. The present invention provides a method for forecasting output power of a wind turbine in a wind farm, including: generating a corrected data set based on environmental data collected from at least one sensor in the wind farm; correcting a weather forecasting model by using the corrected data set; obtaining a forecast value of wind information at the wind turbine based on the corrected weather forecasting model; and forecasting the output power of the wind turbine based on the forecast value and a power forecasting model..
| A wind turbine blade|
The wind turbine blade (1) includes a structure made of a fibre reinforced polymer material including a polymer matrix and fibre reinforcement material embedded in the polymer matrix. The fibre reinforcement material includes carbon fibres that have been produced by carbonisation of a precursor to a carbonisation degree of 60% to 80%..
| Wind turbine rotor with improved hub system|
A wind turbine rotor comprises: • a number of blades (5) which are rotatably mounted about an axis of rotation; • a number of blade supports (12), each blade support supporting a respective blade (5) and each blade support having a pair of legs (14) which are spaced apart along said axis of rotation; • a pair of hub supports (62) which support said legs (14), with said hub supports (62) also being spaced apart along said axis of rotation; and • a pair of bearing systems (52), each bearing system being associated with one of said hub supports (62) and each bearing system rotatably supporting its associated hub support so as to allow its associated hub support to rotate about said axis of rotation; • wherein each hub support allows the communication of forces between said blades (5), and each hub support comprises at least a pair of radially extending walls (80).. .
| Systems for minimizing yaw torque needed to control power output in two-bladed, teetering hinge wind turbines that control power output by yawing|
Systems and methods for increasing operational efficiency of wind turbines, especially offshore wind turbines. The invention discloses systems and methods for reducing the torque needed to rotate a rotor shaft axis with respect to the wind direction.
| Method for retrofitting vortex generators on a wind turbine blade|
A method of retrofitting vortex generators on a wind turbine blade is disclosed, the wind turbine blade being mounted on a wind turbine hub and extending in a longitudinal direction and having a tip end and a root end, the wind turbine blade further comprising a profiled contour including a pressure side and a suction side, as well as a leading edge and a trailing edge with a chord having a chord length extending there between, the profiled contour, when being impacted by an incident airflow, generating a lift. The method comprises identifying a separation line on the suction side of the wind turbine blade, and mounting one or more vortex panels including a first vortex panel comprising at least one vortex generator on the suction side of the wind turbine blade between the separation line and the leading edge of the wind turbine blade..
| Method and apparatus for braking a wind turbine in case of emergency|
The invention is based on the problem of creating an additional device to act as a “secondary emergency device” in the case that one or more standard emergency devices fail to adjust the blade angle of one or multiple rotor blades into a position of power limitation. The method of braking a wind turbine in an emergency by adjusting the rotor blades for wind turbines with power control via the principle of pitch control or active stall control and of holding the position of a rotor blade for each rotor blade with at least one actuator and at least one holding brake is a redundant measure for an emergency.
| System and method for controlling a wind turbine based on identified surface conditions of the rotor blades|
In one aspect, a method for controlling a wind turbine based on an identified surface condition of a rotor blade may include monitoring an operating parameter of the wind turbine to obtain parameter data related to the operating parameter as an operating input of the wind turbine changes, analyzing the parameter data to identify a roughness state of the rotor blade and performing a corrective action in response to the identified roughness state.. .
| Fluid powered turbine|
A fluid powered turbine, such as a wind turbine (10), has a hollow column (12) in which a rotating turbine is housed. A fluid directing structure (14) is supported at or near an end of the column (12) remote from the turbine.
| Wind power plant and method of controlling wind turbine generator in a wind power plant|
A wind power plant comprises at least a first and one or more other wind turbine generators (10, 20, 30, 40), wherein the first and one or more other wind turbine generators are communicatively coupled in order to exchange information between the first wind turbine generator and the one or more other wind turbine generators, and wherein a predetermined transfer relationship is established between the first and one or more other wind turbine generators, said predetermined transfer relationship indicating the degree to which the first wind turbine generator may use information from each of the one or more other wind turbine generator for the control of the first wind turbine.. .
| Controlling wind turbine|
The present invention relates to a method and apparatus for controlling a wind turbine. The method includes: dividing a plurality of wind turbines into at least one group based on a similarity in status information of the plurality of wind turbines; in response to having detected a fault in a first wind turbine of the plurality of wind turbines, searching a group to which the first wind turbine belongs for a second wind turbine matching status information of the first wind turbine; and controlling the first wind turbine based on parameters from the second wind turbine..
| Wind power installation and a tower or tower segment and a door frame for it|
The invention relates to a tower or a tower segment of a wind turbine, having a door for entering the inside of the tower, comprising a door frame, which has a door opening that is preferably closed by a door leaf. The invention further relates to a door frame for a door of a tower of a wind turbine, said frame having a door opening that is preferably closed by a door leaf, and to a wind turbine having a tower, a door provided for entering the inside of the tower, and a staircase leading to the door on the outside of the tower, preferably of a tower described above.
| Tower assembly system for wind turbines and method thereof|
The present invention relates to a tower assembly system, a method of assembling a wind turbine tower and a wind turbine thereof. Three or more guidance devices may be mounted to a mounting flange in the upper end of a lower tower section and/or in the lower end of an upper tower section.
| Wind turbine tower and method of production thereof|
A wind turbine tower is made of reinforced concrete with fibre rovings as reinforcements, wherein the fibre rovings are basalt fibre rovings. In one embodiment, the basalt fibre rovings may include, for example, a bundle of multiple parallel oriented basalt fibers forming a thin rope.
|Apparatus for monitoring wind turbine blade and method thereof|
Provided are an apparatus and method of monitoring a wind turbine blade. The method includes converting strain of a blade into moment, generating a reference value based on design information of the blade and statistical information of the moment, and comparing the moment with the reference value and determining a state of the blade.
|Blade, wind turbine and wind power generating system|
A blade comprises a first blade surface, a second blade surface forming the reverse surface of the first blade surface, a front edge portion connected to the front end of the first blade surface and the front end of the second blade surface and formed in a curved shape convex toward the travelling direction, and a back edge portion connected to the back end of the first blade surface and the back end of the second blade surface extending toward the opposite of the travelling direction, and formed in an acute angle, and the blade is formed to be curved in an arc viewed from the side of the travelling direction.. .
|Blade for wind turbine and method of assembly of the blade|
It is described a blade (6) for a wind turbine (1) for converting wind energy into electric energy, comprising: -a blade structure (7) longitudinally extending along a blade axis (x1) and comprising a blade tip (11), an opposite blade root (12), a longitudinal leading edge portion (13) and a longitudinal trailing edge portion (14) which are extended between the blade root (12) and the blade tip (11); and -an outer aerodynamic shell (20) defining an airfoil (25) including an airfoil leading edge (26), an airfoil trailing edge (27) and an airfoil suction side and an airfoil pressure side (28, 29) between said airfoil leading and trailing edges (26, 27). The outer aerodynamic shell (20) comprises a suction side panel (31) and a pressure side panel (33) which are made from a transparent material and are fastened to the blade structure (7) so as to define the airfoil suction side and the airfoil pressure side (28, 29), respectively, wherein said blade (6) comprises a transparent region (40) between said transparent panels (31, 33) and wherein said transparent panels (31, 33) are arranged facing one another so that it is possible to see through the blade (6) looking through said transparent panels (31, 33) and said transparent region (40).
|Device for connecting wing sections and method for assembling such sections|
A device for connecting sections of wings such as wind turbine blades, which has, at the ends of adjacent sections, central box structures that are placed end-to-end and are clamped together by clamping rods, and a method for producing sections of wings such as wind turbine blades, which includes a step of producing devices for connecting the sections in the form of central joining box structures. .
|Wind turbine blade having twisted spar web|
A radially twisted wind turbine blade (10), including a radially twisted spar web (122), wherein a center (78) of a radial cross section of a base (12) of the blade rotates within a plane of rotation (80), and wherein at a base (12), a radial cross section of the spar web forms a first angle (82) with the plane of rotation, and at a tip (32) a radial cross section of the spar web forms a second angle (130) with the plane of rotation different than the first angle.. .
|Wind turbine blade with asymmetrical spar caps|
A wind turbine blade (10) with asymmetric spar caps (36,38). The blade includes a pressure side spar cap (36) having pressure side fibers (56) having a pressure side fiber diameter (54), the pressure side fibers configured to resist a first flap deflection (20) in a first direction via tensile strength; and a suction side spar cap (38) having suction side fibers (50) having a suction side fiber diameter (52), the suction side fibers configured to resist the first flap deflection via a compressive strength.
|Wind turbine blade and manufacturing method thereof|
A manufacturing method of a wind turbine generator includes a cutting step of cutting a base blade at m cutting planes into (m+1) sections where m is an even number, the m cutting planes being at different positions in a blade length direction; and joining step of joining (m/2+1) sections of the (m+1) sections together to obtain a wind turbine blade which is shorter than the base blade, the (m/2+1) sections including a blade-root section which is closest to a blade root and a blade-tip section which is closest to a blade tip, the blade-root and blade-tip sections being non-adjacent to each other.. .
|Method of making a root end joint of a wind turbine blade and a root segment for such a joint|
A method of making a root end joint for a wind turbine. A plurality of root segments (10) are formed of a composite material.
|Rotor with a curved rotor blade for a wind power plant|
In order to optimise a rotor (1) for a wind turbine (2), comprising a hub (6) which is rotatable about an axis of rotation (15) and a number of rotor blades fixed to the hub (6), at least one rotor blade having at least one curved portion (8) having a curve in the upstream direction, so as to increase the performance of wind turbines (2), it is proposed for a base portion (7) of the curved rotor blade (5), extending from the hub end, to be arranged with the longitudinal axis (14) thereof at a wind correction angle (11) in the upstream direction to a plane (16) orthogonal to the axis of rotation (15).. .
|Horizontal-axis wind turbine using airfoil blades with uniform width and thickness|
A horizontal-axis wind turbine using airfoil blades with uniform in width and thickness, comprising a tower installed vertically from ground surface, a nacelle rotatable connected to center of a vertical axis on top of the tower, a rotating body axially bonded to the nacelle, and one or more blades connecting and forming a pitch angle on the outer periphery of the rotating body, and the blade having an airfoil shape and having uniform in width and thickness in a longitudinal direction and generating torque from lift about a tip of the blade is provided.. .
|Floating wind turbine|
A floating wind turbine (1) for electric power production and a method for use of said wind turbine (1), is described, where the wind turbine (1) comprises a hull (2) attached to a supporting column (2′) for a wind turbine (3) which is arranged to be put into rotation by wind force acting on rotor blades (3′), the wind turbine (1) is connected to a buoyancy device (4) by means of a coupling device (5), the buoyancy device (4) is arranged encircling at least a portion of the hull (2), and the buoyancy device (4) is arranged to be able to support at least a portion of the mass of the wind turbine (1), the coupling device (5) is a rotary coupling arranged in such a way that the wind turbine (1) is arranged to be able to rotate an angle from an essentially vertical position towards a horizontal position, or the opposite, and the hull (2) is provided with an adjustable ballast means (9, 12) arranged to be able to balance the wind turbine (1) about the rotary coupling (5) in any position between said positions.. .
|Method and system for improving wind farm power production efficiency|
A method and system for improving power production efficiency on a wind farm having of a plurality of spatially distributed wind turbines is provided. The method includes receiving a wind measurement that includes a wind direction impinging on a turbine (20), determining a misalignment of the wind turbine with respect to the wind direction, and activating a wake steering control for the wind turbine (20) to implement the misalignment of the wind turbine (20) with the wind direction such that the misalignment is adapted to steer a wake of the wind turbine away from a neighboring wind turbine (30).
|Horizontal-type wind turbine with an upstream deflector|
Horizontal axis wind turbine (hawt) systems are described that include a turbine with deflector in front of the turbine in order to change flow encountered by the turbine's blades. Such an arrangement improves turbine efficiency and may be embodied in a range of size scales for numerous wind (or water) power generation applications..
|Control device for damping grid oscillations|
The invention relates to a method for damping grid oscillations. The oscillations may be damped by controlling e.g.
|Horizontal axis wind turbine and secondary wind rotor|
A wind turbine (1) is disclosed, for converting wind energy into electric energy, comprising:—a shuttle (2) comprising a head portion (11) and a tail portion (12);—a primary wind rotor (3) pivotable with respect to the shuttle (2) around a primary rotational axis (a1) and comprising a primary group of blades (4), a fastening hub (5) for said blades (4) projecting from the head portion (11) of the shuttle (2) and a shaft adapted for being rotatably moved by the primary wind rotor (3);—at least one primary electric generator comprising at least one primary electric stator integral with the shuttle (2) and a primary electric rotor integral with said shaft or operatively connected to it, the primary electric generator adapted to convert wind energy intercepted by said primary group of blades (4) into electric energy. The wind turbine (1) also comprises a secondary wind rotor (15) pivotably hinged to the tail portion (12) and comprising a secondary group of blades (25) pivotable around a secondary rotation axis (a2) perpendicular to the primary rotational axis (a1)..
|Method for reducing vibrations of a wind turbine and control system for reducing vibrations|
A method for reducing vibrations of a wind turbine includes a plurality of set points characterizing set values of operation parameters of the wind turbine. The method includes measuring an acceleration force value corresponding to acceleration forces acting on the turbine, and determining whether the measured acceleration force value is above a predetermined threshold value.
|Transportable hybrid power system|
A transportable, deployable power system comprising a hybrid power box containing solar panels, wind turbine(s), fuel cells, fuel reformers, and other energy sources. The system could also include waste water and potable water inlet and outlet ports for water treatment.
|Tower part for a wind turbine, an aperture cover system, a method for manufacturing a tower part and uses hereof|
The invention relates to a tower part for a wind turbine including at least one wall segment and at least one aperture segment including at least one aperture. The wall segment and the aperture segment are connected and the aperture segment is of a substantially uniform thickness and is thicker than the thickness of the wall segment.
|Simulation of an electrical power distribution network in a wind farm|
A simulator for real time simulation of an electrical power distribution network of a wind farm, the wind farm having a plurality of interconnected wind turbines, is provided. The simulator has (a) an input unit for receiving input data from a wind farm controller, (b) an output unit, and (c) a processing unit adapted to calculate output values based on the input data and a model of the electrical power distribution network, the output values representing calculated electrical parameter values at a predetermined point within the electrical power distribution network, wherein (d) the output unit is adapted to transmit output data based on the calculated output values.
|Wind turbine blade with noise reduction devices and related method|
The present disclosure relates to a wind turbine blade, in particular a wind turbine blade having devices or structures for reducing noise generated by the wind turbine blade during use and related method. The wind turbine blade comprises at least a first longitudinal section having a cross section perpendicularly to a longitudinal direction, the cross section having a plurality of flow modulating devices including a first primary flow modulating device and a secondary flow modulating device for modulating noise spectra, wherein the first primary flow modulating device and the first secondary flow modulating device are spaced perpendicularly to the longitudinal direction.
|Floating support platform for wind turbine|
Support platform for wind generators, comprising a central body (5) provided with a seat engaging with a final section (4) of a pillar (1) of a wind generator (2); this central body (5) is connected by means of a series of radial elements (6) to an annular floating structure (7) and provided internally with position-adjusting means (10) cooperating on the one hand with the base of this final section (4) of the pillar (1) and on the other hand with suitable support elements (9), these position-adjusting means (10) being able to receive and contain a given quantity of fluid and vary the height of the wind generator (2) by means of the raising or lowering of said pillar (1).. .
|Pivotal jet wind turbine|
Pivotal jet wind turbine relates to clean energy field. It has a rim based rotor's structure.
|Diffuser augmented wind turbines|
An example wind turbine diffuser has an expanded outlet area where the diffuser outlet area is greater than it's cross sectional area. The diffuser may be formed of one or more diffuser rings, at least one of which may form a turbine cowling.
A vertical wind turbine includes an upstanding 3 feet support structure, the top cover contains magnets carefully placed in a specific geometric pattern that generates a rotational force. The cover also has openings to allow for vertical air flow through the structure.
|Wind power plant and a method for operating thereof|
A wind power plant is provided. The wind power plant comprises at least one wind turbine and a power plant controller.
|Generating auxiliary power for a wind turbine|
A method and a system for generating auxiliary power for an islanded wind turbine are described, wherein the wind turbine may comprise a generator configured to provide power to a main grid. The method comprises: detecting an island mode of operation wherein said wind turbine is electrically disconnected from said main grid; in response to said disconnection, adjusting the rotational speed of said wind turbine to a value within a range of low rotational speeds; converting said generator output to a value suitable for charging said auxiliary power distribution system; and, connecting the output of said converter to said auxiliary power distribution system..
|Technique to mitigate storms using arrays of wind turbines|
This invention describes a system whose operation can change the track and intensity of atmospheric storms. The invention uses arrays of wind turbines which are being built for power generation.
|Turning device to rotate the rotatable part of a wind turbine|
The first lever and the second lever reach from inside the housing of the nacelle through an opening to the outside of the nacelle, so that the drive is located outside of the housing of the nacelle, when the turning device is attached to the wind turbine.. .
|Apparatus for accessing the nacelle of a wind turbine and associated methods|
A wind turbine includes a tower having an interior, an exterior, a lower end and an upper end; a nacelle coupled to the tower adjacent the upper end and movable to define at least two yaw positions of the nacelle; a rotor coupled to the nacelle; and an access apparatus disposed about the tower adjacent the upper end thereof, the access apparatus defining a passageway into the nacelle that is exterior of the tower, and the access apparatus providing access to the nacelle in the at least two yaw positions of the nacelle. A method for transporting equipment and personnel to the nacelle using the access apparatus is disclosed.
|Vortex generator arrangement for an airfoil|
A particular arrangement of vortex generators for an airfoil is described. The vortex generators are provided in pairs, preferably on a wind turbine blade, wherein by arranging the vortex generators according to specified characteristics, a surprising improvement in blade performance is provided over the prior art systems..
|Hub for a wind turbine|
The invention provides a hub for a wind turbine, the hub comprising a continuous shell being assembled from at least two shell parts. To improve stiffness of the hub, a plate element is attached within blade flanges of the assembled hub.
|Nacelle construction for a wind turbine|
A heli-hoist pad (18) that is incorporated into a wind turbine nacelle (12) in a manner that is optimized for helicopter approach and positioning of the heli-hoist pad (18), such as by being located within a recess (20) in an upper surface (28) of the wind turbine nacelle (12). Heat exchangers (50) may also be positioned within the free flow of wind outside of a nacelle (12) in manners that provide for serviceability while also allowing for optimal positioning of a heli-hoist pad (18)..
|Stationary co-axial multi-rotor wind turbine supported by continuous central driveshaft|
Multiple horizontal axis type rotors are coaxially attached along the upper section of an elongate torque transmitting tower/driveshaft, the tower/driveshaft projects upward from a cantilevered bearing means, and is bent downwind, until the rotors become sufficiently aligned with the wind to rotate the entire tower/driveshaft, power is drawn from the shaft at the base. Surface mount, subsurface mount, and marine installations, including a sailboat, are disclosed.
|Partial pitch wind turbine with floating foundation|
The present invention relates a wind turbine comprising 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 so that they form a rotor plane. A floating foundation having a upper section is mounted to the bottom of the wind turbine tower, wherein the foundation has a buoyant body configured to be installed at an offshore position having a water depth of about 40 m or more.
|Wind turbine control system having a thrust sensor|
A wind turbine control system comprising a thrust sensor and a braking system. The system allows an increase in wind speed to be detected instantaneously and corrective action to be initiated.
|Method and apparatus for wind turbine noise reduction|
A method for operating a horizontal axis wind turbine is provided, the wind turbine including: a rotor including a rotor blade, wherein the rotor is rotatably coupled to a nacelle, and the rotor is rotatable about a horizontal rotor axis extending through the nacelle, and the nacelle is rotatably coupled to a tower, the nacelle rotatable in a yaw plane about a yaw axis. The method includes determining a wind direction; determining a yaw angle setting, wherein the yaw angle setting deviates from an alignment of the rotor axis and the wind direction in the yaw plane; yawing the nacelle to the yaw angle setting; and operating the wind turbine for example to generate electricity..
|Air cooling of wind turbine generator|
A wind turbine axial flux generator for converting wind into electricity comprises: a generator rotor which is rotatable about an axis; and a stator; wherein one of said generator rotor and said stator is provided with magnets and the other is provided with electrical windings in which electricity is induced by relative movement between the generator rotor and the stator; and wherein said generator further comprises: an up-wind air gap on the up-wind side of said electrical windings, between said electrical windings and at least some of said magnets on the up-wind side of said electrical windings; a down-wind air gap on the down-wind side of said electrical windings, between said electrical windings and at least some of said magnets on the down-wind side of said electrical windings; and at least one wind guide for directing said wind so that said wind flows through both said up-wind air gap and said down-wind air gap in order to cool said electrical windings from both said up-wind and down-wind sides of said electrical windings.. .
|Power management system|
Systems for increasing the power productivity of two bladed teetering hinge, yaw controlled wind turbines by varying rotor shaft restraining torque and yaw angle.. .
|System for twisting cables in a wind turbine tower|
The invention relates to a wind turbine having a wind turbine tower and a nacelle provided on top of the tower to which a rotor hub with one or more wind turbine blades is rotatably mounted. A cable twisting system is arranged inside the tower and suspended from the bottom of the nacelle.
|Wind turbine generator, method, and program thereof|
A rotor having a plurality of wind turbine blades, a generator to be driven by rotation of the rotor, a pitch angle controller for controlling a pitch angle of the wind turbine blades according to a speed of a generator, and a comparing and selecting section are provided. When the voltage of the utility grid is a predetermined value or less, the pitch angle controller controls the pitch angle so that the wind turbine blades do not move to a fine side.
|Power dissipating arrangement in a wind turbine|
A power dissipating arrangement for dissipating power from a generator in a wind turbine is provided. The generator comprises a plurality of output terminals corresponding to a multi-phase output.
|Remote sensing system for wind turbines|
Embodiments of the invention generally relate to using remote sensing equipment such as a light detection and ranging (lidar) device to detect wind characteristics for use by wind turbines of a wind park. A wind park controller may received raw wind data from the remote sensing device and determine one or more turbines that can use the raw wind data.
|Wind turbine with tower climatisation system using outside air|
A wind turbine is provided. The wind turbine includes a tower, the tower having an upper part, a middle part and a lower part, the lower and the middle part of the tower forming the base of the tower, waste heat generating equipment located in the middle part of the tower, and a cooling device with at least one cooling device inlet formed in the tower for introducing outside air surrounding the tower into the tower, wherein the cooling device is adapted to guide the outside air from the or each cooling device inlet into the lower part of the tower such that the outside air can ascend towards the middle part and upper part of the tower while cooling the waste heat generating equipment, characterised in that the or each cooling device inlet is located in the upper part of the tower..
|Guide wire tension loss sensor|
Systems and devices are described for measuring tension in a guide wire in a tower service lift for ascending and descending wind turbine generator towers. The present disclosure also describes methods for measuring the tension in the guide wire as well as installing a device for measuring the tension in the guide wire..
|Production facility comprising a transport system for processing elongated products, in particular wind turbine blades, with elongated mould assemblies|
The present invention relates to a production facility (100, 200, 300, 400, 500) for forming elongated products, in particular wind turbine blades, wherein elongated mould assemblies (110a, 110b, 210a, 210b, 310a, 310b, 410a, 410b, 510a, 510b) may be accessed on the basis of an appropriate transport system (150, 250, 350, 450, 550) comprising at least one support member (251a-h, 151, 251, 351, 451, 551) laterally positioned between the elongated mould assemblies. The support member (251a-h, 151, 251, 351, 451, 551) is positioned so as to enable a rotational movement of an arm (121a, 121b, 221a) or is configured to change position or comprises a rotatable carrier element (259).
|Nacelle main frame structure and drive train assembly for a wind turbine|
A nacelle main frame structure and drive train assembly (10) for mounted on a tower (2) of a wind turbine (1). The nacelle main frame structure and drive train assembly (10) comprise a nacelle main frame structure (3) and at least part of a drive train (4).
|Method and apparatus for estimating the temperature of a semiconductor chip|
The invention regards a method for estimating the temperature of a semiconductor chip accommodated in a power semiconductor device in operation, such as an igbt power module, the method comprising the steps of; while the power semiconductor device is in operation determining a voltage drop over the power semiconductor device for a value of applied load current and; estimating the temperature of the semiconductor chip by evaluating the relationship between the determined voltage drop and the value of applied load current on the basis of a semiconductor chip temperature model. The invention also regards the corresponding apparatus for estimating the temperature of a semiconductor chip, as well as a wind turbine comprising such an apparatus..
|High capacity elevator for wind turbine maintenance|
The invention generally relates elevator assemblies suitable for lifting heavy components associated with wind turbines. In certain embodiments, the invention provides an elevator assembly encompassing a wind turbine nacelle and an elevator frame.
|Ultrasonic sound emitting devices for wind turbines|
A wind turbine may include a tower, a nacelle mounted on the tower and a rotor coupled to the nacelle. The rotor may include a hub and at least one rotor blade extending from the hub.
|Super hydrophobic coating|
A super hydrophobic coating composition that is a highly durable super hydrophobic transparent coating for glass, metal, and plastic, and automobile painted surfaces that is manually dispensable and may be easily applied to many substrates is provided. Moreover, the inventive super hydrophobic coating is user friendly as coating takes place at room temperature, and can be applied by a normal hand spray method.
|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.