Apparatus and method derive useful energy from kinetic energy of a fluid, such as air or water, flowing in an existing direction of flow. A rotor carries impeller blade assemblies in circumferentially spaced apart positions about an axis of rotation. Vanes are carried by the impeller blade assemblies for unrestricted free pivotal movement between stops that establish a first position wherein a vane is oriented for being driven by the flow of fluid to rotate the rotor in a desired direction of rotation, and a second position wherein the vane is precluded from an orientation in which the flow of fluid could establish a force tending to retard rotation of the rotor in the desired direction, thus facilitating rotation of the rotor in the desired direction of rotation, independent of the direction of flow of the air or water, while the apparatus remains immersed in a single selected orientation within the flowing fluid.

A method for generating power using a device in deep ocean is disclosed comprising a power generator, a hollow tube turbine platform configured to achieve a desired depth in the deep ocean, a submerging device attached to the turbine platform, a plurality of turbine blades assembly, and at least one power transmission-and-distribution cable.

The bluff body attaches to an elastic mount and is capable of generate vortex shedding when the elastic mount orients the bluff body in a flow-line traverse to a fluid flow and vibrates in response to the vortex shedding. A harvester is located within the bluff body and is capable of generating power above a specified threshold in response to the vibration.

A hydraulic water wheel assembly and system where optimum results are obtained based upon factors such as the height of the channel, the distance between water wheels, the diameter of the discs, and the number, size, dimensions, and arrangement of the wing blades.

To an installation base fixed to the seabed surface, a vertical cylindrically shaped rotating body is attached to be able to rotate. Mounting frames are attached in a radially manner from the outer circumference of the rotary body. At the top side positions of the mounting frames, pressure receiving plates of flat plate shapes, of a specific gravity slightly smaller and lighter than seawater, and giving rise to buoyancy are attached by butterfly joints to be able to pivot. Further, stoppers and stoppers stopping the pressure receiving plates to within an angular range from slightly below the horizontal or 4 to the substantially vertical or 90 are provided. The rotation of the rotary body is increased to turn the power generator.

A turbine for an underwater power station includes a rotor drum having blades that for each revolution are moved in and out of the drum, where the two end-edges of each of the blades are arranged slidingly in a corresponding stabilizing, linear, radially-oriented grooves in a rotational plate that is oriented perpendicular to the rotational axle. This way, the ends of the blades are supported when exposed to water flow while being outside the drum.

A flow power plant comprises a rotor rotating about a rotation axis and having a plurality of pivoting blades. Each pivoting blade is mounted to the rotor for pivoting between a position pivoted-in towards and a position pivoted-out away from the rotation axis. One separate electric machine operable both as a motor and as a generator is assigned to each pivoting blade for applying torques between the rotor and the pivoting blade. A controller separately controls the separate electric machines during each revolution of the respective pivoting blade together with the rotor around the rotation axis in such a way that a predetermined course of a pivot angle of the respective pivoting blade results between the pivoted-in position and the pivoted-out position. The predetermined course of the pivot angle is predetermined for a maximum recovery of energy from a flow flowing against the rotor transversely to the rotation axis.

A reactive blade turbine system works vertically, horizontally, or at an angle and clockwise or counterclockwise according to blade angle and locking position and adjusts to variations in fluid flow such as changes in tidal currents to generate power more efficiently regardless of direction of fluid flow. A method for generating electrical power from a continuous fluid flow via the reactive turbine system is also provided herein.

Provided is a hydroelectric power generator for a pipeline that is installed at a position in a pipeline to generate electricity using a rotating turbine by inducing a flow velocity of water therein and uses environment-friendly energy through the water velocity while varying in size in accordance with the size of a pipeline to generate electricity even at a low-speed stream. The hydroelectric power generator for a pipeline generates electricity with high efficiency by increasing an angular speed at the same flow speed by adjusting the number and radius of turbine blades.

The invention relates to a submersible power plan. The submersible power plant is submerged in a fluid. The power plant includes a structure and a vehicle where the vehicle has at least one wing. The vehicle is arranged to be secured to the structure by at least one tether. The vehicle is arranged to move in a predetermined trajectory by a fluid stream passing the vehicle. The tether includes an upper tether part and a lower tether part. The upper tether part has an average density higher than the fluid, has a hydrodynamic cross section and is arranged to be connected to the vehicle. The lower tether part has an average density lower than the fluid, has a non-hydrodynamic cross section and is arranged to be connected to the structure.