Abstract: A solar chimney includes an elongated chamber having the general configuration of an hourglass. The chamber includes one or more heat exchangers for heating air in the chamber by solar energy. A turbine in the chamber is driven by updrafts of air created in the chamber, and the turbine drives an electric generator or other machine. An exhaust wind turbine assists in the production of such updrafts. A vertical axis wind turbine harnesses energy of wind in the environment of the chimney, and such energy is used to drive the exhaust wind turbine. Excess wind energy is stored for later use. A set of extendable and retractable vanes, mounted externally of the chimney, deflects wind, in the environment of the chimney, towards the vertical axis wind turbine.

Abstract: A screened wind power generation system for generating power in locations where the sight of wind turbines is undesirable or where advertising space can be utilized. The system uses a screen to cover wind turbines with a mesh size and other characteristics that are appropriate for allowing sufficient wind to pass through to wind turbines. The mesh can be coated or imprinted with surface indicia that constitute advertising or create an appearance that blends with surroundings better than an unscreened wind power generation system. The depth of the screen can vary to better enable muffling of wind turbine noise. The screen cross-section can have an aerodynamic shape to facilitate wind flow through the screen.

Abstract: In an example embodiment, a system includes a plurality of drive units coupled to a plurality of propellers. Each drive unit includes a single motor/generator and a single motor controller, and the plurality of drive units includes a first drive-unit pair and a second drive-unit pair. The system also includes a high-voltage bus connecting the motor controllers in the first drive-unit pair to a tether, a low-voltage bus connecting the motor controllers in the second drive-unit pair to the tether, and an intermediate-voltage bus connecting the motor controllers of the first drive-unit pair in series with the motor controllers of the second drive-unit pair. The motor controllers in the first drive-unit pair are connected in parallel via the high-voltage bus and the intermediate-voltage bus, and the motor controllers in the second drive-unit pair are connected in parallel via the intermediate-voltage bus and the low-voltage bus.

Abstract: A wind turbine, including a transmission, a transmission shaft acting as transmission output, a generator, a generator shaft acting as generator drive and a coupling connecting the transmission shaft and the generator shaft to one another, is characterized in that the generator shaft is designed as a hollow shaft, the coupling is disposed such that the coupling is connected to the generator shaft on the side of the generator facing away from the transmission, and the transmission shaft passes through the generator shaft and is connected to the coupling.

Abstract: The electrical power generation system using renewable energy is particularly adapted to provide electrical power to an independent or remotely situated electrical device such as a street light, emergency call box, or illuminated road sign. The system includes a pivotally mounted venturi with vanes assuring that the venturi is oriented into the prevailing wind. A vertical axis wind turbine is installed in the venturi throat, and drives a shaft extending through the column upon which the venturi is installed to a generator at the base of the column. The venturi and vanes may include photovoltaic cells thereon for further electrical power. The venturi may be heated from a geothermal source, and may include a variable diameter internal wall to adjust the cross-sectional area of the throat of the venturi. The use of functionally graded materials and other phase change materials may also improve the performance of the device.

Abstract: In a method for black start of a power station including a plurality of inventers connectable to a local AC electrical grid, a first AC voltage is built up in the AC electrical grid by a first inverter, said first AC voltage being reduced in comparison with a rated voltage of the AC electrical grid by at least a quarter, and at least one second inverter is connected to the AC electrical grid after synchronization with the first AC voltage. After connection of the second converter, a second AC voltage, which is higher than the first AC voltage, is built up in the AC electrical grid.

Abstract: An integrated axis wind turbine system is provided. The system includes a support tower on which is mounted a turbine whose nacelle comprises of drive train consisting of a horizontally aligned main shaft and an associated a set of horizontal shafts at different elevations which transfer rotary motion from a set of blades and which culminates in electricity generation. When the set of blades rotate at an angular speed exceeding a predefined threshold, excess torque is transmitted by a right angle transmission, via a Continuously Variable Transmission, to a vertically aligned central shaft which is coupled to a second turbine's set of blades whose rotary motion also culminates in electricity generation. The angle of attack of wind on the secondary set of blades is adjusted by a blade positioning system. By the integrated operation of the two turbines, the operational capacity of the combined system is increased.

Abstract: A vertical axis wind turbine system having a vertical mast with one or more turbine units supported thereon. The turbine units are of modular construction for assembly around the foot of the mast; are vertically moveable along the height of the mast by a winch system; and are selectively interlocking with the mast to fix the turbine units in parked positions. The turbine system and each turbine unit includes a network of portals and interior rooms for the passage of personnel through the system, including each turbine unit. The electrical generators, and other sub-components, in the turbine units are of modular construction that permits the selective removal and replacement of component segments, including the transport of component segments through the portals and interior rooms of the turbine system while the turbine units remain supported on the mast. The electrical generators are also selectively convertible between AC generators and DC generators.

Abstract: 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. 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. The at least one bearing is a plain bearing and the bearing is a tapered bearing, which comprises at least one conical shaped sliding surface.

Abstract: A wind turbine tower includes a door access opening in a down tower area of the tower. A hinged door panel covers the door access opening, with a ventilation opening defined through the door panel. A multi-sided intake structure, such as a box-like structure, is connected to an exterior of the door panel over the first ventilation opening. The intake structure extends transversely from the door panel and includes a top side, a bottom side, and at least two vertical sides extending between the top side and the bottom side. The vertical sides are open to air flow therethrough. The top and bottom sides may also be open to air flow therethrough. Air from multiple directions is drawn into an interior of the wind turbine tower through the intake structure and ventilation opening. A filtering system with first and second stage filters may be incorporated with any of the intake structures.

Abstract: Provided are a floating structure fluid dynamic force use system and a wind-propelled vessel which uses the system whereby it is possible to compensate for overturning moment due to fluid dynamic force and to alleviate both tilting and size increases of a floating structure. A floating structure fluid dynamic force use system (1) comprises an assembly (12) which extracts energy from wind or water, and a floating structure (13) which supports the assembly (12). The assembly (12) comprises a wind receiving part (10) which receives fluid dynamic force, and a support column (11) which supports the wind receiving part (10). The assembly (12) is positioned with the center of gravity (15) thereof below the water line and is supported to be capable of tilting in an arbitrary direction upon the floating structure (13).

Abstract: A clip for attachment as an edge. The clip having two symmetric sides, each side composed of five arcs. A first arc of the side starting at the midpoint of the nose having a radius of 0.2476 inches and an arc length of 0.22395 inches. A second arc connected to the first arc having a radius of 0.5832 inches and an arc length of 0.0947 inches. A third arc connected to the second arc having a radius of 0.4636 inches and an arc length of 0.1682 inches. A fourth arc connected to the third arc having a radius of 0.3822 inches and an arc length of 0.2263 inches. A fifth arc connected to the fourth arc having an arc having a radius of 0.3291 inches and an arc length of 0.1917 inches. The fifth arc of each side forming the slot end on the clip.

Abstract: A wind power system includes a wind turbine resting on a floating support and an anchoring system for anchoring the wind power system connected to the wind power system by attachment points. The wind power system has the attachment points raised above the waterline of the floating support to a height with respect to the waterline determined so as to counterbalance an overturning moment of the wind turbine subjected to a given wind speed.

Abstract: A system for generating energy from a water current flowing in a body of water. For example, the system may have a generator assembly operable to generate energy in response to the flow of the current and an anchor assembly located at the bed of the body of water, where the generator assembly is attached to the anchor assembly, is held between the bed and the surface of the body of water, and is rotatable about a substantially vertical axis with respect to the anchor assembly. For another example, the generator assembly may include a housing that is held in an upstream orientation when in use, and an impellor assembly located within the housing and including a plurality of blades arranged to be contacted by the flow of the water when in use.

Abstract: A planetary stage of a planetary gear unit with a gearbox housing includes a ring gear, at least one planet gear, and a sun gear, which are rotatably positioned. The ring gear is connected via a tappet to a sun gear shaft of an upstream planetary gear stage, and is rotatably mounted in the gearbox housing. The planetary gear unit exhibits increased robustness by connecting the ring gear on a side opposite the tappet to a ring gear support that is seated in the gearbox housing.

Abstract: The present invention concerns a method and an arrangement for dehumidifying and desalting interior air in off-shore installations. A simplified arrangement is presented wherein exterior intake air containing water rich in supersaturated and wet salt particles is pretreated with dry and salt free pretreatment air before entering a dehumidifying and de-salting unit from which the intake air exits as desalted and dehumidified exit air. A part of this desalted and dehumidified exit air is then redirected to the intake air flow path to serve as pretreatment air thereby simplifying construction and enhancing the lifetime of the dehumidifying and desalting unit.

Abstract: A wind speed sensor includes a shroud that is elongate along a longitudinal axis that is generally transverse to a direction of travel of a mobile machine to which it is mounted. The wind speed sensor senses a magnitude of a crosswind component. An action signal is generated based upon the crosswind component sensed by the wind speed sensor. The action signal can be used to control a direction of residue discharge from the mobile machine.

Abstract: A wind turbine having at least two blades mounted to a blade retainer and a load shaft connected to the blade retainer, such that movement of the blades due to wind causes rotation of the load shaft. The wind turbine includes a frame assembly surrounding the turbine assembly. The frame assembly includes a plurality of vanes to direct wind inside the frame assembly and towards the blades of the turbine assembly. The vanes have a half circle shaped leading edge pointing to an outside perimeter of the frame assembly. The half circle leading edge has two ends and the vanes have a side extending from each of the ends of the half circle that come together to form a trailing edge.

Abstract: A method for operating a wind turbine is provided. At least one temperature information indicating the temperature of at least one component of the wind turbine is generated. The temperature information is used for determining at least one material property information indicating at least one component specific, temperature dependent mechanical property of the respective component. At least one operational parameter of the wind turbine is adjusted in consideration of the at least one material property information.

Abstract: Provided is a wind turbine for generating electric energy using wind power, and more specifically, a wind turbine having a nacelle fence for improving aerodynamic performance by mounting a fence structure on the nacelle of a horizontal axis wind turbine. The wind turbine having a nacelle fence decreases the vortex that is generated at the downstream ends of rotating blades so as to improve the aerodynamic performance of the blades, and increases the power coefficient of the wind turbine.

Abstract: A wind turbine for generating electrical energy may include a tower, a nacelle at the top of the tower, and a rotor coupled to a generator within the nacelle. The wind turbine further includes a cooler including a spoiler and at least one cooler panel projecting above a roof of the nacelle. A heliplatform includes a support structure extending from the nacelle and at least partially integrated with the cooler. The wind turbine may also include a crane coupled to the nacelle and configured to move between a first stowed position underneath the nacelle roof and a second operational position. In the operational position, the crane is selectively positionable over the heliplatform. A method of using the wind turbine and crane is also disclosed.

Abstract: A force generator for introducing vibrational forces into a structure for vibration control of the structure includes an inertial mass, at least one actuator for generating a vibratory movement of the inertial mass relative to the structure, and a drive circuit constructed from components for driving the at least one actuator. At least part of the inertial mass is formed by one component of the drive circuit.

Abstract: A rotor for use with an airborne wind turbine, wherein the rotor comprises a front flange, a can, a rear flange, and a rigid insert comprising a propeller mount, wherein the front flange, can, and rear flange comprise one of carbon fiber and spun aluminum, wherein a rear end of the front flange is attached to a front end of the can, and the rear flange is mounted to a rear end of the can, wherein the rigid insert is bonded to the front flange; and wherein the rigid insert comprises a tube that axially extends within the rotor to allow for the positioning of a driveshaft therethrough.

Abstract: The present invention concerns a synchronous generator of a gearless wind power installation, comprising a stator and a multi-part external rotor. The invention also concerns a wind power installation having such a generator. Furthermore the present invention concerns a transport arrangement for transporting a synchronous generator of a gearless wind power installation.

Abstract: The present invention concerns a method of operating a wind power installation, wherein the wind power installation has an aerodynamic rotor in the form of a horizontal-axis rotor having a hub with at least one rotor blade, and provided on the rotor is at least one load measuring means for detecting a wind loading on the rotor, the method includes the steps: rotating the rotor of the wind power installation without or with a slight wind loading for calibration of the load measuring means and in that case recording a load measurement with the load measuring means, and calibrating the load measuring means based on the load measurement and previously known weight forces occurring at the rotor.

Abstract: A wing with slipstream turbine comprising: a wing or airfoil and at least one turbine, wherein wing or airfoil has at least one partial cylindrical void in a surface and at least one turbine is partially encapsulated within partial cylindrical void. Optionally, wing with slipstream turbine may further comprise at least one slipstream outrigger to help focus the flow of the slipstream more directly on a turbine. Optionally, wing with slipstream turbine may further comprise at least one lateral outrigger to create a low-pressure area which functions to add additional energy transfer to turbine. Optionally, wing with slipstream turbine may further comprise two leading outriggers to help focus the flow of the slipstream more directly on a turbine. Optionally, wing or airfoil may further comprise a leading subcomponent, a left subcomponent, and a right subcomponent to create a super low-pressure area which functions add additional energy transfer to turbine.

Abstract: The present invention in a preferred embodiment provides systems and methods for a velocity gradient floating turbine and power generation, comprising: a) a floating platform; b) guide vanes; c) a velocity gradient turbine; d) a gas compressor; e) a means to couple turbine and compressor, further comprising a turbine gear and a compressor gear or belt/chain drive; f) at least a pipe; and g) a turbine—generator sub-system; wherein the said floating platform comprises: i. at least two tanks; ii. at least a rod to support the said tanks; and wherein the said turbine—generator sub-system comprises: i. a turbine ; and ii. a generator.

Abstract: The present invention relates to an installation tool for assembling a main rotor shaft unit and an assembly method thereof. The installation tool comprises a first element for supporting the generator end of the rotor shaft and a rotatable support plate is coupled to a second element of the installation tool via engaging coupling elements. The rotor shaft is rotated by a single crane unit via lifting elements mounted to the generator end, and then lifted out of the installation tool and placed on a floor. The bearing units are then mounted to the outer surface of the rotor shaft. The rotor shaft is afterwards lifted onto the installation tool so that the coupling element is brought into engagement and the rotor shaft is rotated on to the first element. This provides an installation tool that eliminates the need for two crane units to rotate the rotor shaft and reduces the amount of man-hours needed to assemble the rotor shaft unit by up to six hours.

Abstract: Water flow power generation apparatus, includes an upper bracket and a lower bracket. The transmission and the generator are located above the upper bracket, there are at least two reverse direction rotating water wheels fixed between the upper bracket and the lower bracket. Every vane of one wheel extends into the space between two adjacent wanes of the other wheel, and the same end of each water wheel is fixed with some synchromesh gears, respectively. A sharp-angled shape guide object is fixed at the water inlet end of the water wheels between the upper bracket and the lower bracket. The resulting structure can not only improve the utilization ratio of water power, but also improve the generating efficiency; moreover, the whole generating apparatus is of simple structure, low cost for design and manufacture and easy installation, and applicable to various water flows.

Abstract: A wind turbine includes a turbine housing, a turbine wheel system housed in the turbine housing, and a wind power converting system for converting kinetic energy generated by the turbine wheel system into electrical energy. The turbine wheel system includes a turbine rotor being driven to rotate circumferentially around an interior of the turbine housing, and a rail frame guiding a rotational movement of a turbine rotor. The wind turbine not only allows airflow to move across and through the turbine wheel system but also allows airflow to be directed and exhausted to maximize and control energy generation. The wind turbine is able to efficiently convert wind power to electrical power via a turbine wheel system which allows for the load generated to be distributed across the circumference of the turbine wheel system instead of localized in the center as the traditional wind turbine.

Abstract: This wind turbine is enclosed in a housing structure with a bell shaped opening and a stack effect created on the roof. One side of the housing, facing the wind, opens up to receive air. The air that enters the housing is divided into multiple chambers. The chambers and turning vanes guide the air directly to the blades and help in minimizing air turbulence. The blades are angled to receive the maximum amount of the air. The air rotates the blades turning the rotor, converting mechanical rotation into electrical power. There is a horizontal rotor attached to vertical shaft which is used to generate electrical energy. The stack effect on the roof creates a negative air flow aiding in turning the rotor.

Abstract: A magnetic gear may comprise a first gear member comprising a plurality of permanent magnets arranged to have a first number of magnetic pole pairs and a second gear member positioned relative to the first gear member. The second gear member may comprise a plurality of individually rotatable magnetized elements each driven and synchronized with one another to selectively generate a second number of magnetic pole pairs that differs from the first number of magnetic pole pairs. The magnetic gear may further comprise a plurality of interpole elements positioned between the first and second gear members. The plurality of interpole elements may be disposed to harmonically couple the magnetic pole pairs of the first gear member with the magnetic pole pairs of the second gear member for each selectively generated second number of magnetic pole pairs.

Abstract: An assembly comprising at least one energy consuming device; the at least one energy consuming device being mounted to a support; at least one solar element for creating electric power from solar power; at least one energy storage device for storing electricity generated by the solar element; at least one wind vane or propeller-operatively associated with the support; at least one energy converter for generating electric power from the wind; and at least one shaft operatively connected to the at least one energy converter and the support. Optionally, the energy converter comprises at least one motor which operates to rotate the support; the at least one motor being operatively connected to the at least one battery for storing electric power therein.

Abstract: Diffuser-augmented wind turbines can include a first diffuser ring arranged to form a turbine rotor cowling, the diffuser being fixed to and rotatable with the turbine rotor about the horizontal axis of the wind turbine. The first diffuser ring may have one or more dynamic, aero-elastic, vortex entrainment devices attached to a trailing edge of the diffuser. The first diffuser ring may include one or more slot gaps arranged within its body, each slot gap creating a channel between the interior and exterior surfaces of the first diffuser ring. In some embodiments the diffuser may optionally further include one or more further diffuser rings, the one or more further diffuser rings being static rings (e.g. non-rotatable about the horizontal axis) or dynamic diffuser rings (e.g. rotatable around the horizontal axis).

Abstract: An apparatus for extracting energy from a fluid flow including a secondary fluid channel, a fluid driveable generator unit and a primary fluid channel. The primary fluid channel comprises a fluid intake in fluid communication with a throat. The throat is configured to increase the flow velocity and reduce the pressure of the primary fluid flowing through the primary fluid channel and includes at least one plenum in the interior of the throat configured to further reduce the pressure of the primary fluid flowing through the primary fluid channel. The plenum includes at least one perforation through its exterior surface in fluid communication with the secondary fluid channel. As such, the flow of primary fluid through the primary fluid channel draws the secondary fluid into the primary fluid channel through the secondary fluid channel and the perforation and thereby into driving engagement with the generator.

Abstract: A dual rotor arrangement 100 for a wind or water turbine has a planetary gearbox with two inputs and an output. One rotor 1 is connected to one of the inputs 3 and the other rotor 8 is connected to the other input 6. A generator is connected to the high speed shaft 11. The rotational speed of the output is determined by the relative rotational speeds of the rotors which means that the generator produces electricity of a desired frequency. The arrangement enables electricity of constant frequency to be generated under conditions where the wind or water speed is variable.

Abstract: In general a building, preferably a skyscraper, is situated with a face toward the prevailing winds of the area. Within the building is a system for capturing the prevailing winds and converting the prevailing winds into energy for use by the building or for local energy needs. The system is capable of being retrofitted into existing buildings because the elements of the system are scalable.

Abstract: A wind motor includes a post (1) tower or other supporting structure, a bottom base (2) that supports at least one pair of shafts (4, 5), at least one rotor (6) on each of the shafts (4, 5), a mechanism for synchronizing the rotation of the rotors (6), a front shield (7) secured to the bottom base (2), an arrangement for the free rotation of the bottom base (2) with respect to the post (1), tower or supporting structure, at least one electric generator or another device for converting mechanical energy, driven by one of the rotor shafts (4, 5) or by the synchronizing mechanism, and an inertial body driven by the energy provided by the rotors.

Abstract: 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. Each diffuser ring may have an inlet area that is smaller than the outlet area of the directly upstream ring. The portion of an upstream ring outlet which is not occluded by the downstream ring may form a diffuser outlet such that the total outlet area of the diffuser is larger than the cross-sectional area. In another example, the diffuser may comprise at least one diffuser ring and one or more suction slots that are each connected to a vent, which allows air to be removed from the diffuser system.

Abstract: A system for changing the properties of materials in a pile including a power section, an air movement, and a downwell section installed into a well of the pile that includes a drill casing having one or more perforated casing sections, a pipe/hose having a perforated section aligned with the one or more perforated casing sections, and an isolation mechanism configured to seal the drill casing above and below the perforated section so as to isolate the flow of air through the perforated section. The system dries an impacted zone when air is pumped into the downwell section through the perforated section of the pipe/hose into the pile. The system removes moistures from the pile when air is pulled from the pile into the downwell section through the perforated section of the pipe/hose.

Abstract: An apparatus for converting solar energy may have a heat-capturing element that generates thermal energy when exposed to solar radiation and a canopy arranged about the heat-capturing element. The canopy may define a chamber with an intake and an output, and may be configured for substantially trapping air particles in proximity to the heat-capturing element throughout a pathway from the intake to the output. A portion of the chamber arranged near the output may have a decreased cross section. The apparatus may also include a thermal transfer system configured for creating a positive thermal feedback between a portion of the heat-capturing element near the output and a portion of the heat-capturing element near the intake, and at least one horizontal turbine arranged at the output.

Abstract: An offshore wind turbine apparatus may include a platform and an equalizer with sealed internal volumes, a turbine mast connected to the platform, a turbine which is connected to the turbine mast, and turbine blades connected to the turbine. The apparatus may be rotatably mounted on a barge via a trunnion. The apparatus may rotate from a substantially horizontal position to a substantially upright position when sufficient ballast material is inserted into the equalizer. The equalizer may rest on a sea floor. The platform may provide a restorative buoyant force that tends to cause the apparatus to return to the upright position when perturbed from the upright position.

Abstract: In one aspect, a computing device-implemented method includes receiving at least one triggering event signal from one or more components of a heat recovery system. The method also includes determining, based in part on the at least one triggering event signal, a computation workload assignment to be executed on one or more computation devices. The method further includes sending one or more command signals to the one or more computation devices. The one or more command signals include a portion of the computation workload assignment for execution by the one or more computation devices. The method also includes initiating capture of heat energy to be stored in one or more heat reservoirs, the heat energy being generated by the one or more computation device based upon the computation workload assignment.

Abstract: A wind turbine having one or more magnets for reducing friction between the turbine support and a turbine rotor. 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. The magnet configuration employs a ring of cylindrically-shaped magnets at the bottom and opposed by a corresponding number of generally rectangular-shaped magnets. Bearing magnets are also employed for axial stabilization.

Abstract: An assembly of air and pneumatic devices, especially a high power unit, intended for power generation. The invention consists in that the assembly is preferably made up of three columns consisting of segments arranged coaxially, connected with rigid connecting bars. The stators of the segments have four struts connected to plates, with at least one strut having attached to it a conduit for feeding compressed air, said conduit being equipped with nozzles. Shafts of rotors of one column are coupled with a compressor unit which is connected to a compressed air tank. The compressed air tank is connected via a solenoid valve, a compressed air unit and its branchings to conduits of the stators of the other columns. The solenoid valve is connected via a control system to a speed meter of the rotor.

Abstract: A wind farm includes a plurality of wind power generation units each including a rotation axis, a hub, at least two airfoil blades, a pitch control system and a yaw control system. At least two first-direction wind power generation units are spaced apart longitudinally from each other along a prevailing energy wind direction at a predetermined interval and whose blades are rotated in a same direction. At least one second-direction wind power generation unit that is located between the first-direction wind power generation units and has blades rotating in an opposite direction to a rotational direction of the blades of the first-direction wind power generation units.

Abstract: A high-altitude wind power generation system with a cycloidal turbine and a motor-generator, and a method of operating the same. The system includes a buoyant apparatus configured to be inflated when buoyancy generating gas is injected therein; a cycloidal turbine configured to be placed under the buoyant apparatus, and comprise a rotary shaft arranged to be substantially horizontal to the ground, and a plurality of blades arranged along a circumferential direction of the rotary shaft while their pitch center lines are long extended to be parallel with a center line of the rotary shaft and are spaced apart from the rotary shaft at a preset distance as being arranged to be substantially perpendicular to a flowing direction of fluid blowing from a front, having pitch angles individually adjustable with respect to the pitch center line; and a motor-generator configured to connect with the rotary shaft of the cycloidal turbine.

Abstract: A cooling arrangement configured for use with a direct-drive wind turbine with an outside rotor carrying a plurality of magnets, which cooling arrangement includes a number of exterior cooling elements arranged about an exterior of the outside rotor, wherein a cooling element is configured to guide a cooling airflow over the outside rotor and to transfer heat from the plurality of magnets to the cooling airflow, is provided. A direct-drive wind turbine including an outside rotor carrying a plurality of magnets, and a cooling arrangement for transferring heat from the magnets to an exterior cooling airflow, is further provided.

Abstract: The invention provides an apparatus configured to convert kinetic energy of wind flow into electric energy. The apparatus includes a mast, a primary electric generator mounted on the mast, a secondary electric generator mounted on the mast in a tandem arrangement with the primary electric generator, blades affixed to a rotor shaft of the primary electric generator, a driving clutch affixed to the rotor shaft of the primary electric generator, a driven clutch affixed to a rotor shaft of the secondary electric generator, and endless elongated member connecting the driving clutch with the driven clutch. The apparatus is configured to convert a kinetic energy of a wind flow into an electric energy at one or both of the primary and secondary electric generators.

Abstract: A generator, particularly for a wind turbine, having a rotor and a stator is provided. The rotor includes at least one disc-like shaped rotor end plate supporting the rotor and the stator includes at least one disc-like shaped stator end plate supporting the stator, wherein the at least one rotor end plate and/or the at least one stator end plate at least partially extends tilted relative to the center axis of the generator.