Solicitudes de Patente publicadas en los últimos 15 días / Patent Applications published in the last 15 days
Nº publicación: EP3071830A1 28/09/2016
ENVISION ENERGY DENMARK APS [DK]
The present invention relates to a wind turbine with two or more wind turbine blades having at least one continuous profile extending along the length of the blade. The continuous profile may be formed by a plurality of first and second projecting ele- ments which extend in a chordwise direction. The ratio between the height and length of the first and second element is at least 1:1. The height of the projecting elements may be tapered off from the trailing edge towards the leading edge and/or from the blade root towards the tip end. This allows the increase in strain forces generated in the wind turbine blade to be reduced by deforming the first and second elements in an edgewise direction. This also allows for a continuous reduction of the strain forces and a reduced thickness of the first and second elements which in turn saves material.
Nº publicación: EP3071755A1 28/09/2016
GLOBAL RENEWABLE SOLUTIONS PTY LTD [AU]
A power platform for generating electricity, the platform comprising: a platform body supporting a device for generating electricity from water energy, wherein the power platform has a selectively variable buoyancy to sink the platform in water.
Nº publicación: GB2536618A 28/09/2016
GORDON BELL [GB]
An air capture turbine, such as a vertical axis wind turbine, comprises a centrifugal fan 5 having a plurality of fan blades 5c extending from a wall and a cowling having an inner wall, where the centrifugal fan is housed to the inside of the inner wall of the cowling and where the centrifugal fan has a ring gear mounted on a lower side 5b. The turbine further comprises at least three energy converters, each including a gear wheel for engaging the ring gear, where the weight of the centrifugal fan is supported by the energy converters and where the inner wall of the cowling has a plurality of openings 4 with closure elements for selectively closing one or more of the openings. The openings allow wind to act on the turbine in the direction of rotation while preventing the wind from acting on it in against the direction of rotation.
Nº publicación: EP3073109A1 28/09/2016
ALSTOM RENEWABLE TECHNOLOGIES [FR]
A method for determining one or more dynamic properties of a part of a wind turbine comprises the converter sending an input signal to the generator to create an input load, measuring a response from the part under the input load with one or more sensors, and determining one or more dynamic properties of the part from the response and the input load. Also disclosed are methods for determining a fault and for generating a fault register.
Nº publicación: EP3071831A1 28/09/2016
VESTAS WIND SYS AS [DK]
The invention relates to a control apparatus and method for controlling the rotor blades of a wind turbine, and in particular to controlling the rotor blades during an extreme wind event. An extended mode of operation of the wind turbine rotor beyond the cut-out wind speed is provided. In the extended mode of operation, the pitch of the wind turbine blades is actively controlled so that the rotor and the generator idle at a designated rotational speed. The rotational speed may be relatively high, say 15 to 20% of the nominal speed, compared with minimal speeds experienced by purely feathered wind turbine blades, and may be further controlled as a function of the incident wind speed. Output power control in the extended mode may be zero but is preferably a low, but non-zero value. The output power so produced may then be used as an auxiliary power source for controlling the wind turbine in situations where the utility grid fails.
Nº publicación: EP3072223A2 28/09/2016
GREENSPUR RENEWABLES LTD [GB]
A direct drive rotary generator comprises inner and outer coaxial cylinders 19,20 one of which is stationary whilst the other is rotated by the prime mover, each cylinder carrying a number of interleaved spaced annuli 31,32 which support respective magnets and coils. In an example, cylinder 19 may form the stator and a series of circular/elliptical coils 34,35,36 whose separation is less than 10% of their diameters arranged about each annulus 31, the outer annuli 32 carrying respective axially magnetised permanent magnet 37,38 of ferrite material spaced at the same pitch as the coils. Grooves in the cylinders accept the annuli. Multi- phase generation may be achieved by grouping the coils on each annulus 120Â apart and/or circumferentially displacing each annulus 120Â with respect to the preceding one (figs12,13 not shown), cogging forces being reduced. The magnets may be circumferentially spaced sufficiently to avoid lateral flux leakage (fig 9 not shown) or the magnet annuli may comprise a an annular ferromagnetic disc with half thickness magnets mounted on either side of the disc (fig11 not shown). The magnets and coils may be encapsulated and a non-magnetic and non-conductive facing disk may be adhered to either side of the coils.
Nº publicación: EP3071404A1 28/09/2016
LM WP PATENT HOLDING AS [DK]
A system and method for the manufacture of a wind turbine blade component is described, preferably a shear web component (70) for a wind turbine. The shear web is manufactured by using a forming tool (78a, 78b) to define a flange-shaped cavity (84) at an end of a web member (70). A resin is injected (86) into the cavity (84) and cured to form a flange cast onto the web member. The forming tool (78a, 78b) is subsequently removed from the web member to provide a component having a load-bearing flange formed from a cured resin.
Nº publicación: EP3073241A1 28/09/2016
SIEMENS AG [DE]
The invention relates to an arrangement for analyzing the boundary layer (30) of a rotor blade (20) for a wind turbine (10). The arrangement comprises a first pressure sensing unit (41) located at the trailing edge section (23) of the rotor blade (20), a second pressure sensing unit (42) located upstream of the first pressure sensing unit (41), and a device (43) for determining the differential pressure between the first pressure sensing unit (41) and the second pressure sensing unit (42). Furthermore, the arrangement is arranged and prepared for comparing the determined differential pressure with a reference differential pressure, such that the boundary layer (30) of the rotor blade (20) can be characterized. The invention is furthermore related to a method of analyzing the boundary layer (30) of a rotor blade (20) for a wind turbine (10) and to the use of such a method for determining whether the boundary layer (30) of the rotor blade (20) is separated at a predetermined chordwise position (51) of the rotor blade.
Nº publicación: EP3073108A1 28/09/2016
SIEMENS AG [DE]
The invention relates to a method of controlling a wind turbine (10) comprising a nacelle (12), a rotating hub (13), a first rotor blade (171) and a second rotor blade (172). The method comprises the steps of i) measuring noise (27) by means of at least one noise detection device (21), the noise (27) being generated due to an interaction between the first rotor blade (171) of the wind turbine (10) and airflow (26) impinging on the first rotor blade (171); ii) determining the angular distribution and the intensity of the noise (27) by means of a controller (23); and iii) choosing the operational parameters of the wind turbine (10) based on the measured noise (27) by means of the controller (23) such that the performance of the wind turbine (10) is optimized. The choice of operational parameters includes individual pitching of the second rotor blade (172) and/or yawing the nacelle (12) of the wind turbine (10). Furthermore, the invention relates to a wind turbine (10) which is controlled by such a method.
Nº publicación: US2016276896A1 22/09/2016
MORRISON DARRELL [US]
A superconducting electrical machine includes a rotor and a stator. The stator defines a cavity. The rotor is configured to rotate about a longitudinal axis. The rotor is disposed at least partially within the cavity. The rotor includes a shaft configured to rotate with the rotor, a rotor active section including at least a rotor torque tube and a superconductor, and a first re-entrant end attaching the shaft to the rotor active section. At most a threshold fraction of a bending force applied to the shaft is communicated to the rotor active section.
Nº publicación: US2016273225A1 22/09/2016
GIGLIO THOMAS [US]
The awning and shutter system serves as both a storm shutter when closed and a deck or patio awning when opened, and is designed with a counterweight making for effortless operation. Furthermore, some embodiments of the awning and shutter may feature a third position, substantially reducing the projection of the awning when in the opened position. This unique feature allows the system to sustain high wind conditions while maintaining interior view, shade and daylight.
Nº publicación: US2016273515A1 22/09/2016
ALSTOM RENEWABLE TECH WIND B V [NL]
Hoisting systems are provided for mounting a hub (108) on top of a tower, the hub carrying a first and a second blade (103, 104) forming a bunny ears configuration, and a third blade (105). The system comprises a crane (100) for pulling up the hub to the top of the tower, and a blade support () for supporting the third blade at a supported blade portion. The system further comprises a hub-blade coupling device configured to assist in coupling a root portion of the third blade to a coupling portion of the hub. The hub-blade coupling device comprises a hub mount structure configured to be removably fixed to the hub, a blade mount structure configured to be removably fixed to the third blade, and a connector rotatably coupling the hub mount structure and the blade mount structure. Methods are provided of mounting a hub on top of a tower by using any of said systems.
Nº publicación: US2016273521A1 22/09/2016
BEIJING GOLDWIND SCIENCE & CREATION WINDPOWER EQUIPMENT CO LTD [CN]
The invention provides a lightening protection device, a direct-drive wind turbine generator set and a lightening protection method of the direct-drive wind turbine generator set and relates to the technical field of lightening protection devices. By the lightening protection device, lightening can circulate along a new outer passage instead of passing each bearing of the direct-drive wind turbine generator set. The direct-drive wind turbine generator set specifically comprises a lightening arrester, a blade downlead, a first lightening current guide device, a second lightening attracting device and a lightening protection downlead. The lightening arrester which is used for arresting lightening currents is disposed on a non-metal blade. The lightening arrester is electrically connected with the blade downlead. The first lightening current guide part is electrically connected with the blade downlead. The first lightening current guide part is connected with the outer surface of a generator rotor in an insulated manner. The second lightening current guide part is connected with the outer surface of the generator rotor and an insulated cabin hood. The second lightening current guide part is electrically connected with the first lightening current guide part. The lightening protection downlead is used for being electrically connected with the second lightening current guide part and a grounding part disposed in a tower so as to discharge the lightening currents to the ground thro
Nº publicación: US2016273520A1 22/09/2016
WOBBEN PROPERTIES GMBH [DE]
The invention relates to a method for controlling at least one wind turbine (100), wherein the at least one wind turbine (100) is equipped to supply electrical power into an electrical mains network (120), and depending on a service offer in the electrical mains network (120), electrical active power is supplied into the electrical mains network (120) or electrical active power is withdrawn from the electrical mains network (120) and supplied to at least one electrical consumer of the at least one wind turbine (100), and depending on an additional state variable of the electrical mains network (120), electrical reactive power is supplied into the electrical mains network (120) or electrical reactive power is withdrawn from the electrical mains network (120).
Nº publicación: US2016273517A1 22/09/2016
ALSTOM RENEWABLE TECH [FR]
Wind turbine blades comprising one or more deformable trailing edge sections, each deformable trailing edge section comprising a first and a second actuator, wherein the second actuator is arranged substantially downstream from the first actuator, and wherein the first actuator is of a first type and wherein the second actuator is of a second type, the second type being different from the first type. The application further relates to wind turbines comprising such blades and methods of operating a wind turbine comprising one or more of such blades.
Nº publicación: US2016273519A1 22/09/2016
GOOGLE INC [US]
A vehicle-based airborne wind turbine system having an aerial wing, a plurality of rotors each having a plurality of rotatable blades positioned on the aerial wing, an electrically conductive tether secured to the aerial wing and secured to a ground station positioned on a vehicle, wherein the aerial wing is adapted to receive electrical power from the vehicle that is delivered to the aerial wing through the electrically conductive tether; wherein the aerial wing is adapted to operate in a flying mode to harness wind energy to provide a first pulling force through the tether to pull the vehicle; and wherein the aerial wing is also adapted to operate in a powered flying mode wherein the rotors may be powered so that the turbine blades serve as thrust-generating propellers to provide a second pulling force through the tether to pull the vehicle
Nº publicación: US2016273514A1 22/09/2016
DEESE KENNETH A [US]
MCBRIDE MATTHEW J [US]
A rotor hub maintenance system and method is disclosed. The system includes at least a rotor hub, a plurality of appendages that are operatively connectable to the hub, and a plurality of support members. The preferred embodiment provides that the support members simultaneously secure the hub and appendages a predetermined height above a reference surface and provide the only support for the hub and appendages.
Nº publicación: US2016273516A1 22/09/2016
VESTAS WIND SYS AS [DK]
A strip of fibre-reinforced polymeric material for a longitudinal reinforcing structure of a wind turbine blade, the strip having substantially flat upper and lower surfaces and extending longitudinally between first and second transverse edges, wherein an end region of the strip tapers in thickness towards the first transverse edge, and wherein one or more slots are defined in the tapered end region, the or each slot extending longitudinally from the first transverse edge of the strip into the tapered end region.
Nº publicación: US2016273518A1 22/09/2016
SIEMENS IND INC [US]
Embodiments provide systems, methods and apparatus for controlling an energy delivery system including providing an energy management system (EMS) including a wind power management (WPM) system, the WPM system including a WPM application that includes a security constrained dynamic dispatch (SCDD) application; receiving input data within the SCCD application, the data including real time telemetry and dynamic unit parameters, schedule input data, and critical constraint data; validating the input data for consistency to avoid infeasibilities; pre-processing the validated input data to determine parameters including a total generation amount to be dispatched; formulating an optimization model based on the parameters and data structures storing the validated input data; executing an optimization process on the optimization model to compute a solution; post-processing the solution to determine economic basepoints; and using the determined economic basepoints in controlling operation of the energy delivery system. Numerous other aspects are provided.
Nº publicación: DE102015003252A1 22/09/2016
BURG HORST [DE]
Die Erfindung betrifft eine Windkraftanlage (1) umfassend wenigstens einen Rotor (20) zum Umwandeln von Windenergie in Rotationsenergie mit wenigstens drei Rotorblättern (21), wobei dem wenigstens einen Rotor (20) wenigstens ein Windumlenkelement (61a, 61b, 61c, 61d, 61e, 63a, 63b, 63c, 63d, 63e) in einer Luftströmungsrichtung vorgeordnet ist, das eine Hauptströmungsrichtung eines einfallenden Windes um einen Winkel zwischen 60° und 120° umlenkt.
Nº publicación: US2016272284A1 22/09/2016
GICON WINDPOWER IP GMBH [DE]
The invention relates to support structures that float in the open sea and are connected to anchors by bracing means, for wind turbines, service stations, or converter stations. Said structures are in particular characterized by secure and stable anchoring. To this end, the support structure has a first component, which is arranged under water, and a second component, which cuts through the water surface. Furthermore, the first component has first buoyant bodies, which are arranged at the corners of a polygon and act as supports of the second component, and tubular second buoyant bodies, which connect said first buoyant bodies to each other. A node structure, which connects at least two second buoyant bodies to each other, and at least one U-shaped node plate are arranged in the first buoyant body. The node structure is at the same time the support for a tubular support element and thus in conjunction with the node plate is a node, which absorbs and dissipates forces, of the underwater structure. The second component has tubular support elements, which cut through the water surface and are connected via support means to a support construction for the wind turbine, service station or converter station.
Nº publicación: WO2016148870A1 22/09/2016
GOOGLE INC [US]
An airborne wind turbine system is provided including an aerial vehicle having a fuselage, an electrically conductive tether having a first end secured to the aerial vehicle and a second end secured to a rotatable drum positioned on a tower onto which the tether is wrapped when the aerial vehicle is reeled in, a perch extending from the tower, one or more perch booms attached to the perch panel and pivotably mounted to the tower, wherein when the aerial vehicle is secured to the perch, the aerial vehicle is positionable in a lowered parked position, and wherein the aerial vehicle is movable to a raised parked position caused by rotation of the one or more perch booms with respect to the tower.
Nº publicación: WO2016147016A1 22/09/2016
G\u00C1SP\u00C1R TAM\u00C1S [HU]
A highly efficient, quiet, vertical axis wind turbine which comprises an inverter, a storage battery and a control unit and can be used even at low wind speeds is novel in that the position and profile of the blades are governed by strict geometrical characteristics, and also in that an alternating current generator is configured from permanent magnets mounted on a rotating large-diameter magnetic disc, and windings with air cores on a stator ring. The description of the invention specifies in detail the optimum dimensions, ratios and relationships for both the generator and the blades, found by the inventors and necessary for the efficient functioning of the device.
Nº publicación: WO2016145520A1 22/09/2016
O'HAGAN PETER K [CA]
This invention discloses an improved wind turbine suitable for mounting without a wind turbine tower. The wind turbine is based on a rotor with appropriately selected blades. A nozzle and diffuser in the wind flow increase the amount of wind energy available to the rotor. The rotor is interruptibly connected with one or more generators which allows generation at a wide range of wind speeds. The rotor is also interruptibly connected with a flywheel which allows for storage or use of rotational energy as needed by the availability of wind energy. One or more wind turbines can be grouped together in a common housing. The lack of a wind turbine tower and the general compact design allows the wind turbine to be used in close proximity to or on buildings.
Nº publicación: DE102015204970A1 22/09/2016
SCHAEFFLER TECHNOLOGIES AG [DE]
The invention relates to a roller bearing (1), configured as a spherical roller bearing, comprising a bearing inner ring (2), a bearing outer ring (3) and comprising a number of roller bodies (4, 5) arranged in two axially spaced rows of rollers (6, 7) having different contact angles (α1, α2) between the bearing inner ring and the bearing outer ring, and formed as structurally identical barrel rollers, wherein the contact angle (α2) of the axially inner row of rollers (7) is greater than the contact angle (α1) of the axially outer row of rollers (α2>α1). According to the invention, in order to achieve a higher load-bearing capacity and a longer useful life of the roller bearing, the contact angle of the axially outer row of rollers is in the region between 2° and 10°, including said limit values, and the contact angle of the axially inner row of rollers is in the region between 7° and 20°, also including said limit values.