A vertical axis wind turbine having a platform and a roof forming a housing for a vertical axis rotor and a stator. Stator vanes extend between the platform and the roof. The stator vanes and guiding surfaces on the platform and the roof define inlets and airflow paths for guiding wind into the inner chamber of the housing, where the wind powers a vertical axis rotor that is rotatably supported on the platform. The stator vanes are segmented with the trailing edges dynamically adjusting the diameter of the inner chamber in response to changing wind and rotor speed conditions. A shaft extending from the rotor can be connected to a generator connected to a power grid. The roof can support a solar panel connected to the power grid.

A vertical axis wind and hydraulic turbine with flow control including a regular hexagonal structure of radius R, parallelepiped-shaped, inside which a rotor rotates with three or more vanes on a vertical axis which is located in the center of the hexagon as seen from above, wherein the vanes when rotating generate a circle of radius Rt, further including six articulated deflector vanes that grab and concentrate the flow of air or liquid entering the rotor vanes, from the wind or liquid current entry side to the turbine and diffuse the flow of air or liquid exiting from the rotor vanes, from the side opposite to the wind or liquid entry side to the turbine.

A self-starting Savonius wind turbine includes a frame, a rotor assembly that is rotatable about a central axis of rotation and an energy utilizing device operably connected to the rotor assembly. The rotor assembly has at least two rotors, each rotor having at least two rotor blades. Rotation of the rotor assembly is initiated by wind coming from any direction blowing on any one of the plurality of blades. The rotors are configured in a stacked orientation with the blades fixed at a rotated angular position relative to one another to start rotation of the rotor assembly in variable wind conditions. The rotor assembly is made of a composite laminate and the frame is made of a durable, lightweight material. The frame and the rotor assembly are assembled into a single unit for transportation and utilization.

A vertical-axis wind turbine apparatus is disclosed. In at least one embodiment, the apparatus provides a substantially vertically-oriented main shaft. A blade assembly is coaxially aligned with and rotatably engaged about the main shaft. The blade assembly provides an at least one blade radially projecting therefrom. A housing is rotatably engaged with the main shaft and configured for selectively encompassing the blade assembly. A first screen is integral with the housing and configured for shielding a return portion of the blade assembly. A second screen is rotatably engaged with the housing and configured for selectively moving between a retracted position, wherein the second screen is positioned substantially adjacent to the first screen such that a catch portion of the blade assembly is exposed, and a deployed position, wherein the second screen is rotated away from the first screen for at least partially shielding the catch portion from the wind.

A device (10) for wind power generation, comprising: a blade assembly (20) having a plurality of radially extending blades (22) surrounding a hollow space (24); a frame structure (30) inside which the blade assembly (20) is rotatably mounted; and a power generating unit (40) connected with the blade assembly (20); wherein the blade assembly (20) is rotatable by at least one air flow directed into the blade assembly (20), so that rotation of the blade assembly (20) is adapted to drive the power generating unit (40) to thereby generate electrical energy. And a system (100) comprises a plurality of the devices (10) arranged in at least one of a horizontal and a vertical arrangement relative to one another.

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.

Embodiments related to wind turbines and methods of guiding a flow of a fluid using a wind turbine. In one embodiment, a wind turbine includes a framework including an annular upper guide means and an annular base guide means; and an annular rotor assembly surrounding a central space, the rotor assembly comprising a plurality of rotor vanes, each rotor vane being held in position between the upper guide means and the base guide means.

A wind powered generator comprising; a mast having a plurality of tower outlets positioned along on a low pressure portion of a length of the mast; one or more inlets positioned on a high pressure portion of the mast; an internal fluid flow path between the inlet and the tower outlets; a turbine in the fluid flow path; wherein the inlet and tower outlets are arranged such that wind creates air flow through the fluid flow path for motivating a turbine.

A) Wind turbine-solar panel hybrid system. The solar panels are attached to the wind turbine in such a way that they deflect the wind and direct it towards the wind turbine. The solar panels also serve to generate electricity (FIG. 1 1.2.3.). B) The wind turbine uses separating panels of different materials that are properly adjusted and deflect the wind towards the wind turbine resulting in multiple efficiency (FIG. 1 1.2.3.).

The present invention is an energy storage system comprising a mechanical bellows having an outer flexible material casing with one or more functional elements that operate as actuators for expanding and contracting the outer flexible material casing to store or deliver energy.