The wind turbine includes a rotor 6 and a stator 1 mounted coaxially therewith and provided with lower 2 and upper 3 bases interconnected by vertical guide vanes 4 of the stator, oriented outward. A confuser 22 with blades 23 is mounted on the lower base 2, and a diffuser 9 is mounted above the stator 1. A lower disc 10 of the diffuser is rigidly attached to an upper part 11 of the diffuser that serves as the upper base 3 of the stator. Lower 19 and upper 16 half-axles of rotation of the rotor are installed in upper 21 and lower 17 supports, respectively. A rotor body 7 is made in the form of a hollow truncated cone tapering upward having a curvilinear surface. Rotor blades 8 have a curvilinear surface, preferably of hyperbolic shape, and are installed on an outer surface of the rotor body 7. Upper 13 and lower 14 impellers with curvilinear blades 15 and 20 are mounted inside the rotor body. A rotor fan 25 is additionally installed inside a cavity 24 of the lower disc 10 of the diffuser 9. The blades of the fan are wrapped around the upper part of the outer surface of the rotor body 7. Spacing of the blades of the upper impeller 13 is chosen to be greater than a blade spacing of the fan 25.

The windmill converts the kinetic energy of a flowing fluid into rotational energy that can be used to power a mechanical load. The turbine incorporates a plurality of plate structures, a plurality of sail/wing structures, and a drive shaft. The plurality of plate structures attach to the plurality of sail/wing structures such that the passage of the flowing fluid through the plurality of sail/wing structures rotates the combined structure. The combined structure formed by the plurality of plate structures and the plurality of sail/wing structures rotates around an axis of rotation. The drive shaft attaches to the combined structure formed by the plurality of plate structures and the plurality of sail/wing structures such that the rotation of the combined structure rotates the drive shaft.

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.

A wind turbine system to provide electrical power in areas not connected to the electrical power grid. The wind turbine system includes a frame and a rotatable shaft supported by the frame. A ring and idler gear assembly is coupled to the rotatable shaft. An upper rotor assembly is coupled to the rotatable shaft. The upper rotor assembly is configured to rotate in a first direction and thereby to rotate the rotatable shaft in a first direction. A lower rotor assembly is coupled to the ring and idler gear assembly. The lower rotor assembly is configured to rotate in a second direction which is opposite of the first direction and thereby to rotate the rotatable shaft in the first direction via the ring and idler gear assembly.

Implementations of wind energy devices may include a frame coupled to each of a first rotor wheel, a second rotor wheel, a third rotor wheel, and a fourth rotor wheel. Implementations of wind energy devices may also include a first cable configured to rotate about the first rotor wheel and the second rotor wheel and a second cable configured to rotate about the third rotor wheel and the fourth rotor wheel. Implementations of wind energy devices may also include a plurality of airfoils coupled between the first cable and the second cable. Implementations of wind energy devices may include a first generator and a second generator. Implementations of wind energy devices may include a controller coupled to the first generator and the second generator. The controller may be configured to control a speed of rotation of the plurality of airfoils.

Disclosed are vertical axis turbines comprising: a turbine shaft; a plurality of helicoidal blades mounted on the turbine shaft, each blade comprising a front face and a rear face; and a plurality of venturis, each venturi comprising a channel extending through each of the plurality of blades from the front face thereof to the rear face thereof.

A coupling system for coupling a curved object to a central shaft, the curved object includes an inner surface facing the central shaft and an outer surface. The system includes a coupling member for coupling the curved object to the central shaft; at least one pocket integrally formed on a curved surface of the curved object and defined as a depression with respect to at least one of the inner and outer surfaces. The pocket includes: a flat portion having an aperture for holding the coupling member; and a flange portion which merges continuously from the flat portion to the curved object and is shaped such that the flat portion is disposed perpendicularly to the coupling member; a fastening member for fastening the coupling member to the flat portion. The thickness of the flat portion and flange portion is the thickness of the curved object.

A linear-motion guiding device is disposed on the wall of the container. The wind turbine includes, at the lower end of the support column, a support-column lower end member capable of being fixed to the linear-motion guiding device. A slider of the linear-motion guiding device is provided with a guide member, and a bolt is inserted through a bolt insertion hole in the support-column lower end member and is screwed into a threaded hole in the guide member. The apparatus includes an attachment guide part including a stepped bolt and a flanged step part, the attachment guide part being configured to guide the support-column lower end member to a position and an attitude in which the bolt insertion hole in the support-column lower end member is aligned with the threaded hole in the guide member when the support-column lower end member is not fixed to the slider.

A high performance hybrid turbine is provided which has an impeller towards which a fluid flow of water, air, or other fluid is conveyed for rotation of the impeller around an axis of rotation. The impeller exploits the thrusts that the fluid flow exerts on the elements constituting the impeller and the thrusts generated by a certain number of airfoils provided inside the elements of the impeller. The high performance hybrid turbine, if used as a wind turbine, can operate at much higher wind speeds than conventional wind turbines.

A span-wise extending pin for joining blade segments of a rotor blade includes a distal portion having a length defined by a first end and an opposing, second end. The distal portion has a conical shape extending for at least a portion of the length thereof for providing ease of insertion of the pin into a pin joint slot of one of the first and second blade segments. The pin also includes a pin portion adjacent to the distal portion. The pin portion includes a first section and a second section. The second section is configured for securing within a beam structure of the first blade segment. The first section extends span-wise from a receiving end of the beam structure. The pin also includes a proximal portion having at least a rod member that extends span-wise through and secures together the pin portion and the distal portion.