A fluid turbine has semi-spherical, hollow blades arrayed about a vertical axis. The turbine's blade shape reduces drag on a convex side and increases drag on a concave side. Part of the center of the array of rotor blades is open, allowing flow through the center of the array. The spherical form enhances fluid flow through the center of the array and results in rotational force on a downwind blade, and directs fresh air into bypass flow. A combination of holes and a deflector surface generates vortices as updraft flow passes through holes, creating a pressure differential between the area surrounding the holes and the upper portions of the blade. Fluid passing from relatively higher pressure to relatively lower pressure passes the deflector surface, forming vortices that result in rotational force on the blades of the fluid turbine.

A vertical-axis renewable-power generator is an apparatus that is used to efficiently generate power in various weather conditions using renewable energy sources. The apparatus includes a vertically-oriented foil and a fluid turbine. The foil is designed to generate areas of relative high fluid velocity and low pressure on one side and relative lower fluid velocity and higher pressure on the opposite side. The foil is also self-directing so that the foil can follow the direction of the fluid flow. The fluid turbine is integrated into the foil so that the fluid turbine can be rotated by the high-speed fluid flow. The rotation of the fluid turbine can be used to generate electricity. The apparatus conforms to the Bernoulli's principle that is proven to increase the speed of the fluid flow over the foil, which is used to increase the speed of the fluid flow impacting the fluid turbine.

A lightning protection system can include a socket, a receptor plug, a tip receptor, and a tip receptor mount. The socket can extend at least partly through a blade wall, and can include a socket body, a first retention shoulder, and a plurality of first teeth. The receptor plug can include a plug body, a plug conductor, a second retention shoulder, and a plurality of second teeth. The first retention shoulder can engage the second retention shoulder to secure the receptor plug to the socket. The first plurality of teeth can engage the second plurality of teeth to resist rotation of the receptor plug. The tip receptor mount can include latticed bonding wings that can be secured to a wind turbine blade with bonding material. The receptor plug can be accessed to be secured to the socket via an opening in another socket that is foamed into the blade wall.

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 double rotor for vertical axis turbine includes two single three-vane rotors separated by a horizontal or separation plate, wherein such plate provides two different access areas to the propelling fluid, wherein between each of the three vanes of each of the single rotors it is determined surface continuity attenuated by curves in the fluid flow direction preventing parasitic flows during rotation thereof.

A blade (104) for a rotor of a wind turbine is provided. The blade (104) comprises: a truss-like three-dimensional structure having strut members (108; 110; 112) forming the truss-like structure, wherein a plurality of the strut members (108; 110; 112) in the truss-like structure have an airfoil-shaped cross-section.

Wind turbine system improved by the inventor for the production of electrical power, which comprises a shaft supported at two ends on two towers made of concrete or steel or another material, the lower half of which wind turbine is closed with a frustopyramidal shape in order that the wind does not pass and generate a “hill” effect and simply applies thrust to the upper part of the system. The system comprises sails composed of vanes in the form of a blade (double-arc) that rotate about themselves in order to utilize 100% of the different wind speeds and a possible stopping of the wind turbine system. The blades of the vanes of the wind turbine may be braced with respect to one another in order, where necessary, that same move at the same time. On account of the level of safety and stability it affords, the wind turbine allows a number of wind turbines to be placed in the direction of the wind.

A blade comprises a first blade surface, a second blade surface forming the reverse surface of the first blade surface, a front edge portion connected to the front end of the first blade surface and the front end of the second blade surface and formed in a curved shape convex toward the travelling direction, and a back edge portion connected to the back end of the first blade surface and the back end of the second blade surface extending toward the opposite of the travelling direction, and formed in an acute angle, and the blade is formed to be curved in an arc viewed from the side of the travelling direction.

Pairs of unidirectionally magnetic rotor/stator assemblies are mounted for synchronous rotation and complementary, so that one creates pulsating positive current flow and the other creates pulsating negative current flow, as the rotor and stator in each assembly are rotated with respect to each other. The pulsating positive current flow and pulsating negative current flow are combined at a desired phase angle to create alternating current, without power loss due to reversal of current flow.

The present invention relates to a wind-water-light-magnetism-air five-energy integrated power generation device that comprises fan blades, a power generation device and a rotary shaft and further comprises a base, guide rail posts, fan blade rails and a tower. The barrel-shaped tower is concentrically and externally sleeved with the rotary shaft and is vertically fixed at the top of the base. The fan blade rails are disposed concentrically with the rotary shaft above the base, the guide rail posts are vertically fixed around the base two ends of the elongated fan blades are respectively fixed on the corresponding positions of the upper and lower guide rails, the top of the rotary shaft protrudes from the tower, and the protruding section of the rotary shaft is fixedly connected with the fan blades through two ends of a rod-shaped tower rod.