Abstract: A high-efficiency airfoil for VAWT is shown to demonstrate an increased power coefficient of higher than 0.4 due to increased lift at lower angle of attacks (“AOA”). The high efficiency airfoil of the present invention includes a modification to the leading and trailing edges, resulting in an improved power coefficient at higher AOAs. For the leading-edge modification, a cylindrical nose was placed at the leading edge, and for the trailing edge a scorpion tail was added to the trailing edge with angles at 20 degrees in either positive (CCW) or negative (CW) direction. The results of these modifications were compared with the corresponding results for the baseline model to illustrate their impacts on the lift and drag coefficients.

Abstract: An anti-icing wind power blade, consisted of a wind turbine blade, wherein the wind turbine blade is provided with an anti-icing heating device, and wherein the anti-icing heating device consists of an air heating system and an electric heating system, wherein the two systems are independent from each other, without mutual interference, and heat the wind turbine blade separately or simultaneously.

Abstract: A combination of a wind turbine blade with a flow separation control. The wind turbine blade includes a body with an upper surface and a lower surface that extend from a leading edge to a trailing edge. The flow separation control device includes a plurality of openings on the upper surface of the body.

Abstract: A rotor which comprises at least one blade and at least one fluid routing device that is mechanically connected to one of the blades so that a fluid inlet thereof is placed in a lateral edge of the blade. The fluid routing device has a continuous channel with an inlet facing the opposite direction of rotation of the blades and an outlet. The continuous channel is sized and shaped to conduct fluid passing via the inlet. The fluid routing device includes a flow directing element that is mechanically connected to the outlet so as to direct the conducted fluid to adjust fluid flow in or on the mechanically connected blade.

Abstract: The invention relates to nacelle of a wind turbine. According to the invention, the wind turbine has a tower or mast, an aerodynamic rotor, and a generator having an electric-machine rotor and a stator, and the nacelle is provided with a nacelle covering, wherein the nacelle, in particular the nacelle covering, is self-supporting.

Abstract: A universal spherical reaction turbine for any flowing fluid at any depths or elevation that is capable of unidirectional rotation under reversible flow conditions. The turbine includes a rotatable shaft that is adapted to rotate about an axis of rotation; turbine blade support members that are fixedly attached to the rotatable shaft and a plurality of meridian turbine blades. The meridian turbine blades are fixedly attached to diametrically-opposite points that define a geometrical north-south meridian axis that is oriented at a skew angle to the axis of rotation of the rotatable shaft. The skew angle is greater than zero and less than 180 degrees, and, more preferably, between 25 and 35 degrees. The skewing ensures that those turbine blades that are attached to the diametrically-opposite points move on a helical trajectory with respect to the axis of rotation.

Abstract: The invention relates to a method of aligning a wind turbine component with a wind turbine rotor hub, comprising providing the component with a support comprising at least one adjustable element and adjusting said at least one element to align the wind turbine component. The invention further relates to a system for aligning a wind turbine component with a wind turbine rotor hub comprising a support with at least one adjustable element supporting said wind turbine component, such that said wind turbine component can be aligned by adjusting said at least one element.

Abstract: A system, apparatus, and method for collecting and concentrating an airstream for converting into mechanical or electrical energy, includes an elongated housing structure, including an airstream inlet chamber, a central chamber, and an airstream outlet chamber, and an ancillary airstream injector sub-system.

Abstract: A enclosed vertical axis fluid rotor used as a wind turbine of two designs having multiple sails that are concave on the inside and convex on the outer side which allows omni-directional wind or other fluids to engage sails to create optimum fluid momentum. These are sectional segmentation of each rotor that can be stacked upon one another at locating lug points to be attached to each rotor to keep radial alignment precise during assembly. The preferred embodiment would be of composite materials or plastics that can be molded to a given design of three or more stages. The advantage of this turbine is using the fluids to their optimum efficiency. These designs have low starting speed, low precession, and low drag. One design has a central axis that turns with bearings with the rotor and the other design is a central static (non-turning) axis shaft that allows the turbine to turn on bearings.

Abstract: The CWE Concepts are designed to extract the maximum possible wind energy passing through a given square footage area of influencing machine interface at given calculated velocities, to deliver that energy to two power take off shafts for end user's useful work (electrical power generation and other requirements). A multi-bucket “S” rotor, airfoils, baffles and cowling combined, utilize one hundred percent of that moving air volume most efficiently. Our strategies are to use smaller units, yielding more power than existing designs while being installed at much lower levels, urban friendly, less visible, nearly-enclosed rotating machinery, quieter, and safer for indigenous wildlife populations. We plan to market for commercial and residential customers, in turn providing HVAC and electrical power augmentation to utility companies—a reliable and robust addition to the national power grid. Our goals—reduce dependency on foreign oil and provide a clean alternative.

Abstract: A wind power generator apparatus includes a housing (10) having a chamber (11), a wind generator set (20) in the chamber (11) and a wind collector (30) coupled to the wind generator set (20). The wind generator set (20) includes a base (21) fixed in the housing (10), a generator (22) mounted on the base (21) and a blade wheel (23) coupled to the generator (22). The wind generator set (20) can be installed in a vehicle (50) for generating electric power during driving. The power generated by the wind generator set (20) can be stored or used to charge the vehicle (50).

Abstract: A power-generation system is provided. The system includes a plurality of vertical axis wind turbines (VAWTs). Each VAWT includes an upstanding support structure, a central shaft positioned along a central axis of the VAWT, a plurality of struts extending from the central shaft, and a plurality of blades, each blade positioned at an end of a corresponding strut and oriented substantially vertically. The VAWTs are grouped in sets that are arranged in rows, and are separated from each adjacent VAWT by a distance of approximately one rotor diameter.

Abstract: An underwater generator for generating electricity including: a casing, a turbine propeller assembly configured within the casing; a platform, where the platform provides a mechanism to hold the casing; a cover member, where the cover member protects the turbine propeller assembly; and a power cable for transmitting electrical energy from the underwater generator to a user thereof. The casing may include a slit at a bottom portion, where the slit allows the removal of sediments, sand particles and similar materials. The turbine propeller assembly includes a plurality of blades. In one exemplary embodiment, the blades may turn in two directions.

Abstract: A tidal power apparatus comprises a moored pontoon (1) having a duct (2) therethrough opening at opposed ends of the pontoon. The duct has a vertical axis rotor (3) therein driving an electrical generator (6). A deflector vane (8) is located in the duct at each end thereof, each deflector vane being mounted to pivot about a vertical axis between an active position, in which the deflector vane deflects water flow to one side of the rotor axis to cause rotation of the rotor, and an inactive position substantially aligned with the water flow from the turbine.

Abstract: An energy recovery apparatus and method for recovering and harvesting energy from passing air is disclosed. Energy recovery and harvesting from passing air is accomplished by creating a pressure differential using high and low pressure ports. The energy represented by the pressure differential is extracted using a mass airfoil device which, in turn, is used to create alternative forms of energy which, in turn, is used to support auxiliary and main systems aboard any moving object or form of transport.

Abstract: A control system for mitigating the effects of a wind turbine on a radar system is disclosed. The control system includes a sensor configured to detect an operating condition of the radar system; a processor configured to receive an operating condition of the wind turbine and determine a rotation modification sequence based on the operating condition of the radar system and the operating condition of the wind turbine; and a controller configured to apply the rotation modification sequence to the wind turbine. A method of mitigating the effects of a wind turbine on a radar system is also disclosed.

Abstract: A stackable nacelle for a wind turbine includes a first piece having a top wall and integral first side walls extending at a first obtuse angle from each edge of the top wall; and a second piece, for mating with the first piece, having a bottom wall and integral second side walls extending at a second obtuse angle from each edge of the bottom wall.

Abstract: Turning device (24) for turning the drive train (1) of a wind energy system or at least of partial sections of same, whereby the drive train (1) is mounted to rotate in a machine frame (2), whereby the drive train (1) comprises a flange (16), and the turning device (24) comprises a console (29a) that can be fixed in place on the machine frame (2). The task of the present invention is to indicate a turning device that can turn the drive train (1) at any desired point, without using the gear mechanism (4). This task is accomplished by means of an adapter disk (17) that can be affixed to the flange (16), which has a plurality of force application points (19) that are disposed along a circle (20), and having at least one linear setting element (28a), which is mounted in the console (29a), on the one side, so as to move in terms of angle, and which can be coupled with the adaptor disk (17), on the other side, by way of its force application points (19), so as to move in terms of angle.

Abstract: A system and method provide a proactive mechanism to control pitching of the blades of a wind turbine to compensate for rotor imbalance during normal operation by pitching the blades individually or asymmetrically, based on turbulent wind gust measurements in front of the rotor, determined before it reaches the rotor blades.

Abstract: A tandem axial turbine that comprises a front confusor, a funnel-shaped runner having inner blades and capable of accelerating and directing an oncoming flow toward a co-axial rear runner which rotates in an opposite direction. A tangential turbine has a hub, blades capable of rotating in relation to the hub between positions across and along the flow, and propulsion springs for controlling the movement of the blades in relation to the hub and the transfer of the energy. A second tangential turbine comprises a runner having a hub and blades and a shroud capturing the runner from above and around and permitting the blades to dip into water flowing immediately below the hub and an opening of the shroud. A surface vessel comprises a stabilized frame rotatably affixed on a vessel hull about a center of wave induced rocking motions of the vessel and therefore isolated from a rocking motion of the vessel.

Abstract: A system for providing low cost fluid pressurization without consumption of limited natural resources, pollution, or greenhouse gas emission, and is independent of wind conditions. Additionally, the system of the present invention includes a venturi-like collar positioned at the top of one or more stacks increasing air flow.

Abstract: A vertical axis wind turbine (VAWT) assembly effects sharing of the axial load on its bearings to increase equipment life and/or effective operation. The assembly includes: a support; a VAWT (e.g. Savonius) having a substantially vertical shaft; at least lower and upper substantially vertically spaced bearings mounting the shaft for rotation about a substantially vertical axis, the bearings operatively mounted by the support; and a load-sharing assembly connected to the upper bearing which allows the bearings to share at least 10% (such as 50-50) of the axial load. The load sharing assembly may include a spring surrounding an upper portion of the shaft, and operatively engaging the upper bearing. The shaft may include an upper shall extension, and the load sharing assembly a spring end cap operatively connected to the upper shaft extension and holding the spring against the upper bearing.

Abstract: A wind engine has at least a central rotor (1) which has several groups of frameworks evenly distributed around it (2), each of the frameworks is provided with at least one set of power generation parts (3); the profile frame for the power generation parts is provided with a reversing and return booster (3g) for controlling the reversing speed, and each group of the frameworks is provided with a driver (8) and an opening adjustment positioner (7), and the brake releases or limits the reversing of the power generation parts by making or breaking the control circuit of the power distributor (21). The wind engine enables the power generation system to operate continuously and stably to generate power within the set varying range of different wind speed parameters and can improve power generation efficiency.

Abstract: An airfoil shaped tower the size of a skyscraper for the production of electrical power using turbines. The turbines are located at the base of the tower and are fed by ambient air. Power to turn the turbines comes from the pressure drop generated by the wind moving over a changing surface of the airfoil. (Bernoulli's Equation). The areas of negative pressure on the exterior surface are covered by a plurality of bleeder vents that conduct air from the high-pressure (ambient air) interior to the low-pressure exterior. The invention is further improved by the construction of several towers in close proximity. Adjacent towers augment the air velocity thus increasing the pressure differential. The power of the turbines is greatly increased because power is proportional to the effective wind velocity cubed.

Abstract: The invention concerns a wind power installation, whether an offshore or an onshore wind power installation. An offshore wind power installation comprising an underwater construction which is externally provided with a structure which promotes a growth with marine fauna and flora for later harvest.

Abstract: An exemplary embodiment includes a wind turbine system. The wind turbine system includes a wind turbine generator operable to supply wind turbine power to a utility system. A converter is coupled to the wind turbine generator and the utility system. The wind turbine system also includes a controller comprising an internal reference frame of the wind turbine generator, coupled to the converter, and configured for modulating flow of power through the converter in response to frequency disturbances or power swings of the utility system relative to the internal reference frame.

Abstract: A cooling device for a wind turbine is provided, the cooling device including at lease one liquid-tight tube which is partially filled with a liquid coolant, wherein one end of the tube is located in a first area and another end of the tube is located in a second area, the first and second areas having different temperatures when operating the wind turbine.

Abstract: A high efficiency vertical axis wind turbine includes an optimized blade shape for increased torque output. The shape of the optimized profile includes a camber portion at a leading edge region of the blade with a maximum height to chord ratio (Y/C) at when the non-dimensional chord length (X/C) is approximately one third. An intermediate region follows the leading edge region and is characterized by a shallow convex region, followed by a flow reattachment surface at the trailing edge region characterized by a second concave region and a local maximum of the height to chord ratio at approximately four fifths of the non-dimensional chord length.

Abstract: A blade for a rotor of a wind energy turbine includes opposite upper and lower faces, opposite leading and trailing edges connecting the upper and lower and at least one air outlet opening arranged on at least one of the upper face, the lower face and the trailing edge for discharging pressurized air into the air around at least one of the upper and lower faces and the leading and trailing edges.

Abstract: Wind power installation technology has seen dramatic developments in the last 20 years. In the meantime there are installations of the order of magnitude of up to 5 MW and future development leads to an expectation of installations with an even greater nominal power. The present application does not preferably concern such megawatt installations but rather small installations, in particular a small wind power installation of between about 50 and 150 kW nominal power, which can be set up practically at any location in the world as independently as possible of intensive machine support. The object of the present invention is to simplify the erection of a wind power installation.

Abstract: A method for deicing a rotor blade having a blade root, a blade tip, and a leading edge in which the rotor blade is operably coupled to a hub of a turbine includes circulating heated air through an outflow channel from the blade root towards the blade tip, recirculating the heated air via a return channel from the blade tip to the blade root, whereupon the recirculated heated air becomes returned air, and reheating the returned air for further circulation.

Abstract: A wind turbine which varies an active annular plane area by composing such that blades are attached to a cylindrical rotor movable in the radial direction of the rotor, the blades being reciprocated in the radial direction by means of a blade shifting mechanism connected to the root of each blade, or the blade itself is divided so that the outer one of the divided blade is movable in the radial direction. With the construction, the wind turbine can be operated with a maximum output within the range of evading fatigue failure of the blades and rotor by adjusting the active annular plane area in accordance with wind speed.

Abstract: A wind turbine generator is disclosed which includes a hub, a plurality of wind driven blades arranged around the hub, a drive belt or drive chain or other mechanical drive driven by the plurality of blades, an electric generator driven by the mechanical drive; and a boxlike frame forming a wind blocking wall for blocking wind from blowing against any of the plurality of wind driven blades in the reverse direction. In one arrangement, the wind turbine generator further includes two oil or gas tanks, and the boxlike frame is placed between the tanks to take advantage of the natural wind channeling between the two tanks. In another arrangement, the wind turbine generator further includes a house or building and the boxlike frame is built into the side of the house or building. The boxlike frame is also built into the top of a roof or the middle of a roof in other arrangements.

Abstract: A hydro-power generation system for use in conjunction with a water treatment system is disclosed. The embodiments of the hydro-power generation system include an impeller rotatably positioned in a housing. The impeller is rotatably coupled with a generator. When water flows through the water treatment system, water flows to the hydro-power generation system and acts on the impeller causing rotation thereof. The rotation of the impeller results in the generation of electricity for the water treatment system by the generator. Other embodiments of the hydro-power generation system include a rotor rotatably positioned in a conduit through which water flows. The flowing water causes the rotor to rotate. The rotor operatively cooperates with a surrounding stator. As the rotor rotates within the stator electricity is generated for the water treatment system.

Abstract: A wind or water flow energy converter comprising a wind or water flow actuated rotor assembly. The rotor comprises a plurality of blades, wherein the blades of are variable in length to provide a variable diameter rotor. The rotor diameter is controlled to fully extend the rotor at low flow velocity and to retract the rotor as flow velocity increases such that the loads delivered by or exerted upon the rotor do not exceed set limits.

Abstract: A flowing water actuatable turbine system, wherein the turbine system is mounted for operational co-operation with water current by means of an upstanding column/pile in such manner as to be axially displaceable length ways of the column/pile. The turbine system is preferably arranged to be rotatably about the longitudinal axis of the column. Floatation means can be provided for operationally supporting the turbines which can include blade pitch control.

Abstract: A modular wind energy device for converting wind energy into mechanical energy, which includes a support structure configured for placement onto a support surface (36) and defining an axis of rotation (23) generally parallel thereto; one or more panemone type rotors (16) mounted onto the support structure for free rotation about the axis of rotation, having a pair of wing elements, of which, during rotation of the rotor in response to an airflow, at all times, one of the wing elements faces in an upstream direction and the other of the wing elements faces in a downstream direction; a power take off element associated with the one or more rotors; and shroud apparatus (10) for reducing resistance against the returning wing surfaces, and for directing the airflow toward the effective wing surfaces.

Abstract: The polygonal windmill is essentially a windmill with the blade components contained within a rigid polygonal frame, preferably cubic in shape. The polygonal windmill relies on its much larger wind surface area rather than high speeds for energy production. The simple design of the frame and the blades allow the windmill to be constructed with off-the-shelf components and materials, i.e. minimal engineering and manufacturing costs, and minimal labor to construct the windmill. No special cutting or shaping of the blades is needed in the production of the polygonal windmill.

Abstract: A wind turbine for generating power comprising one or more blades mounted to a shaft for rotational movement in response to an airflow, a housing having a generally central longitudinal axis, the housing surrounding the one or more blades and the shaft, wherein the housing includes an inlet opening and an outlet opening, and an adjustable scoop operably associated with the housing to alter the airflow entering the inlet opening.

Abstract: A method and device for collecting energy from wind includes an airfoil having an outer surface defining a leading edge, a central section of greatest breadth adjacent to which a Bernoulli effect reduced pressure region results as an air flow passes over the airfoil from the leading edge to a trailing edge, an air passage contained within the outer surface, and a plurality of edge nozzles penetrating the outer surface within the section of greatest breadth. The edge nozzles each have an outlet orifice oriented toward the trailing edge and an inlet orifice feeding into the air passage and being positioned to communicate between the air passage and the Bernoulli effect reduced pressure region. The airfoil is positioned in the wind with the leading edge facing substantially into the wind and with the wind passing over the edge nozzles. An airflow-driven turbine capable of converting an airflow into rotational mechanical energy is also provided, the turbine being in airflow communication with the air passage.

Abstract: A solar and wind energy generating system for mounting to a building comprises a wind generator system including at least an auger shaped air engaging member. A plurality of wind generators having air engaging vanes may also be provided. The wind generating system intercepts the flow of air currents to produce mechanical energy which is transformed into electrical energy by an electric generator. The air engaging surface of the wind generator vanes or the auger include a plurality of surface deviations. The surface deviations are arranged in at least one predetermined pattern such as a plurality of radially extending deviation sets. The solar generator includes a plurality of solar energy collectors. The wind generators may further include air engaging vanes with at least one transparent surface, and a plurality of solar energy collectors within a cavity formed in the vane, thus forming a combined solar and wind energy generator.

Abstract: An in-line fluid medium driven charging system includes a fluid medium driven generator disposed in a fluid medium directing tube. The fluid medium driven generator includes an auger shaped, fluid medium engaging member and is coupled to an electrical generator. Rotation of the auger shaped, fluid medium engaging member by intercepting a flow of a fluid medium causes rotation of the electrical generator, thereby generating electrical energy which recharges and assists in maintaining the life of a battery in a moving vehicle.

Abstract: A fluid-augmented free-vortex power generating apparatus (10) that is driven by either prevailing winds or water and which has a turbine (24) that includes a number of axially extending cup like sails (20) mounted on a freely rotating hub (22). A fluid mover (28) in the form of a fan or blower as would be used when the fluid medium is air or a water pump when the fluid medium is water, tangentially directs a flow of fluid under high velocity onto the turbine sails inducing rotation and creating an unconfined vortex around the apparatus (10). A power generator produces electrical energy from the rotation of the rotor which revolves due to the combined impingement of the fluid mover (28) and intensified regenerated circular fluid movement created by the artificially created unconfined vortex.

Abstract: The present invention relates to a rotor driven by wind power with a vertical rotating axis and radial arms distributed at uniform angular intervals over its periphery which bear bodies with an aerodynamic profile such that one side of the profile exhibits a lower air resistance with a current at right angles than with a current from the opposite side.Known vertical rotors should be of simple construction and should be capable of being manufactured at low cost. At the same time their efficiency should be high enough for them to be used to generate wind power economically. To this end, the rotor of the generic type is improved such that the rotor arms consist of one or a plurality of loops in vertical planes with an aerodynamic profile, where the profile shape is maintained essentially uniform over the entire length of the loop.

Abstract: A wind energy conversion system includes specially shaped blades mounted in a specific location on a specially shaped blade-supporting body to maximize energy conversion from wind energy to electrical energy. The blade-supporting body includes a concave section located upstream of a convex section, with the two sections being joined together at a location of maximum diameter. The blades are mounted on the body at the location of maximum diameter. Each blade includes two surfaces each of which includes a concave section and a convex section. The blade surfaces are spaced apart from each other by a blade thickness dimension that increases from essentially zero at blade tips to a maximum adjacent to a blade longitudinal axis that extends from a blade proximal end mounted on the blade-supporting body to a distal end spaced from said blade-supporting body.

Abstract: Apparatus and method for harnessing fluid energy from a fluid current and converting it into mechanical energy. The invention comprises a big wheel and a little wheel where the little wheel rotates about on axis parallel to but offset from an axis about which the big wheel rotates. The little wheel rotates within the big wheel. Flexible sails are fastened between masts of the big wheel and masts of the little wheel so that when the wheels rotate each sail is unfurled and extended during one phase of operation and said sail is folded upon itself during another phase of operation. When extended or stretched open, the sail derives power from the fluid current. When the sail is folded, it offers a reduced resistance to the fluid current into which said sail is moving.

Abstract: A device for generating power from wind which includes a shaft extending in a longitudinal direction and propelling elements mounted on the shaft. The shaft is mounted for rotation in a frame which is also mounted for rotation. The device also includes a deflector on the frame for deflecting wind into the propelling elements by orienting the frame due to rotation thereof to have a portion thereof facing the direction of travel of the wind. The deflector also increases the force of the wind on the propelling elements by compressing the wind and further deflects the wind to strike the propelling elements at a position radially outwardly of the shaft and radially inwardly of an outer periphery of the frame. The deflector further prevents the wind from striking the propelling elements along a part of the outer periphery of the frame which faces the wind direction.