An assembly of a number of reservoirs stacked in a helix shape and filled with certain volume of a fluid is made to rotate continuously by the effect of gravity, where each reservoir has a special geometric shape and design where in the stacked helix of reservoirs the plurality of the torque values due to gravity on one side of the rotation axis is greater than the plurality of the torque values due to gravity on the other side of the rotation axis, resulting in a continuous rotation.

A vertical axis wind turbine with improved safety, production efficiency and greater functional wind speed range. A vertical axis wind turbine comprises turbine blades having geometric characteristics of a yin yang symbol when viewed from the top down. The turbine blades are configured to form a scoop portion for catching wind. The surface area of the scoop portion may be dynamically configured to accommodate power production in higher wind speed ranges by dynamically furling the blades to reduce the surface area of the scoop portion as RPM begins to exceed a safe limit. First and second permanent magnet rotor arrays are dynamically positioned above and below an array of stator coils to maximize power generation.

The invention relates to a high-performance device, which allows energy to be collected from a moving fluid by an impeller, wind turbine or water turbine. The device opposes the stream of the incident fluid by blades having concave surfaces, in winch the perpendicular (or the orthogonal), erected on the surface of the blade, is substantially secant with the axis of rotation of the impeller, in order to discharge the fluid after compression, simultaneously: vertically, with vortex effect, and then laterally after tilting by tangential election of the fluid to the outside of the impeller. This is different from known wind turbines, which allow the incident fluid to transit by die centre of rotation thereof to engage with the convex portion of the blades from tile inside towards the outside or with the drag coefficient of the profile (referred to as ex) of the blades of the impeller. The device according to the invention is particularly interesting the field of renewable energy in urban or mountainous environments, where the flows are turbulent.

The present invention relates to a hydropower generator for generating electricity by rotating in a fluid flow direction, the hydropower generator comprising: a central structure installed so as to be able to stand erect in water; a rotator installed on an outer circumferential surface of the central structure, and having at least one resistive plate coupled to the outer circumferential surface thereof; a rotating ring provided between the central structure and the rotator to cause the rotator to rotate around the central structure; a speed changing unit which integrally rotates by means of one side thereof coupled to the rotator; and a generator having a motor shaft coupled to the other side of the speed changing unit, and generating energy by rotation of the motor shaft, wherein the resistive plate is located in the water and generates resistive force according to the flow of water while the rotator rotates, such that energy is generated from the generator. Therefore, the present invention can provide a hydropower generator which is efficient in management, control, and extension of lifespan, and is cost-effective in the installation thereof.

A renewable-energy power plant including a first structure, a second structure, a first flue, a second flue and a turbine arrangement comprising at least one turbine, wherein the first structure includes a primary fluid inlet and the second structure includes a secondary fluid inlet and a primary fluid outlet, wherein the secondary fluid inlet is connected to the first flue, wherein the primary fluid inlet is located lower than the secondary fluid inlet and the primary fluid outlet is located lower than the secondary fluid inlet, wherein the turbine arrangement is provided inside the second flue, wherein the power plant includes wetting means arranged to discharge an additive fluid to the working fluid passing through the secondary fluid inlet, wherein the turbine arrangement is arranged to generate power due to the working fluid flowing in a downwards direction inside the second flue and passing through the turbine arrangement.

Provided are a rotary device for fluid power generation and a fluid power generation device that are capable of converting the kinetic energy of a fluid to an electric energy. By utilizing a longitudinal vortex as a driving force, a rotary body such as a cylinder as a high-strength and tough wing-shaped member can be rotated, and power can be efficiently generated in a wide range of flow rate without letting the longitudinal vortex disappear even if the flow rate changes in a wide range. This rotary device for power generation includes a rotary body 3; and a wake body 8 that is a distance away from the rotary body 3 toward the downstream side of a flow direction 10 of the fluid, and has at least one crossover section at which the wake body 8 intersects with the rotary body 3.

A turbine having a rotor assembly with substantially cylindrical blades. A scoop may be used to direct a fluid flow into the turbine, thereby causing a pushing force and/or a suction force to be exerted on at least some of the cylindrical blades. Accordingly, the rotor assembly may rotate within the turbine. In an example, the rotor assembly may include a plurality of magnets, which may cause a magnetic field to fluctuate. Copper discs on the turbine enclosure may be used to generate electricity based on the changing magnetic field. In another example, the turbine enclosure may have one or more openings, which may generate a suction or pressure force as the rotor assembly rotates.

Systems and methods disclosed herein provide a tidal power generator including a first container, a second container coupled to the first container, a frame pivotably coupled to the second container, a first valve, associated with the second container, configured to selectively control ingress of a first volume of a fluid into the second container, and a second valve, associated with the second container, configured to selectively control egress of a second volume of the fluid out of the second container.

A nanofriction power generation device with spiral vibrating balls and a buoy body thereof-includes an inner spiral barrel, an outer spiral barrel sleeved outside the inner spiral barrel, hollow balls between the two spiral barrels, an electric energy storage device contained in the inner spiral barrel, and a buoy barrel for containing the outer spiral barrel. The outer wall of the inner spiral barrel and the inner wall of the outer spiral barrel are repectively provided with first spiral tracks and second spiral tracks extending from one end to the opposite other end. The inner spiral barrel is in the outer spiral barrel, and the first spiral tracks and the second spiral tracks have a one-to-one correspondence and form spiral channels. Nanofriction electric generator films are attached to an outer surface of each hollow ball and an inner wall of each spiral channel.

The hydroelectric power generating system includes a reservoir for retaining a body of water and an outer vessel that surrounds a peripheral wall of the reservoir. A circumferential canal extends between an upper portion of the reservoir peripheral wall and the outer vessel. One or more penstocks extend below the canal between the reservoir and the outer vessel. Each penstock has one or more hydroelectric turbine generators installed therealong. A plurality of primary wind turbines can be disposed on a peripheral wall of the reservoir and a plurality of air columns can be disposed within the reservoir to generate auxiliary power.