Various examples are provided related to kite energy generation. In one example, a method for kite-based energy generation includes deploying a kite in a flow of fluid; controlling movement of the kite along a continuous pattern across the flow, where the kite applies tension greater than a threshold during at least a first portion of the pattern and applies tension less than the threshold during at least a second portion of the pattern; and generating power during the first portion of the continuous pattern. In another example, a system includes a kite including control surfaces that control movement of the kite along a continuous pattern across the flow of fluid; a winch connected to the kite by a tether, and a generator of the winch that can generate power during a portion of the pattern; and a spool controller that can control spooling of the tether during the pattern.

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 vertical-axis wind turbine generator includes two or more rotor assemblies, each rotor assembly having two or more wind turbine blades mounted for rotation, preferably those having a Savonius configuration. A cowling includes a nose portion forming a bifurcating wind diverter, in which the bifurcated airflow is directed in order to cause counter directional flow of the wind turbine blades. According to at least one version, the cowling further includes a cover portion that defines a venturi chamber above the rotating blades to draw air into the top of the turbine above the rotating blades and create a vacuum, thereby reducing resistance. The cowling can be part of an existing wind turbine or alternatively replace an original cowling as a retrofit.

A material (such as potassium hydroxide or ammonia) capable of reacting with ambient carbon dioxide to produce fertilizer is placed in the path of ambient air movement. Desirably the material is associated with a fabric which in turn is associated with a vane of a vertical axis wind turbine, the turbine performing useful work as well as supporting the material which produces a fertilizer. A misting system controlled by a controller may automatically apply a water mist to the material if the humidity is below a predetermined level. The fabric with produced nitrogen and/or potassium fertilizer may be placed directly into contact with soil, or shredded first, or burned to produce energy and an ash (and the ash applied to the soil). The wind turbine may have a convenient, versatile mounting system with three adjustable legs supporting a central component, and the spokes of the wind turbine may be slotted for easy assembly with vanes.

A wind power generator is disclosed. The wind power generator includes a wind rotor, a fluid coupling, and a rotary electric machine. The wind rotor is disposed to be rotatable. The fluid coupling includes an impeller receiving a torque inputted thereto from the wind rotor, and a turbine receiving the torque transmitted thereto from the impeller through a hydraulic fluid. The rotary electric machine is configured to generate electricity by the torque transmitted thereto from the turbine.

A vertical wind turbine that includes a plurality of vertical vanes which can be rotated independently of one another about a respective vane rotational axis by a motor and which are mounted on a common circular path in a rotatable manner about a vertical rotor rotational axis. A method for operating a vertical wind turbine. Angular positions are specified for vertical wind turbine vanes which are mounted in a rotatable manner about a respective vertical rotor rotational axis and which can be rotated about a respective vane rotational axis by a motor. The vertical wind turbine is operated in a particularly efficient and material-preserving manner in that the angular positions of the vanes are specified by at least one respective pitch motor which at least partly supports the respective vane.

A wind harvesting assembly for a wind turbine, having: a Venturi tube having a hollow interior having a first air pressure; an open top end having a first diameter; an open bottom end having the first diameter; a tube length spanning between the open top end and the open bottom end; and a constricted section located above the bottom end, the constricted section adapted to increase a velocity of air passing through by having a second diameter smaller than the first diameter; a plurality of vertical wind turbine blades arranged around the Venturi tube, an outlet disbursement blade assembly disposed below the bottom open end of the Venturi tube and a port fan positioned coaxially with the Venturi tube.

In this invention, some unique blades are embedded which start from the top of the glass dome, extend around it and ending up below the dome plate. All of these blades are used to slow rotation of the tower. This vertical wind turbine, while rotating the structure to see the various views and landscapes around the tower, provides the electrical power required by the penthouse from wind power by the generator. Three blades are embedded in the top of the turbine, which is the upper part of the main blades. Lower and inside the container in roof of dome, the gearbox and generator are located to which harnessed energy by blades is transferred.

A box-type wind power generation device and a power generation device set is provided, the box-type wind power generation device includes a box body, a first energy collecting unit and a first connection member. The box body includes at least one flexible housing member and at least one rigid housing member which enclose at least one sealed cavity. The first energy collecting unit includes a piezoelectric membrane and electrodes deposited on both sides of the piezoelectric membrane, respectively; the first energy collecting unit overlying on an inner wall of the flexible housing member and are located in the sealed cavity. An end of the first connection member is fixed to the flexible housing member so that the first connection member is connected to the box body and at least a part of the first connection member is located outside the sealed cavity.

A vertical wind turbine includes a shroud for directing vehicle-created wind towards the turbine blades, which are oriented in response to wind direction.