According to an embodiment of the present invention, a tidal power generator may comprise: a plurality of channel levees which are arranged spaced apart from each other so as to form a channel having a constant width and which have a plurality of installation grooves, each being formed by recessing the surface facing the channel, wherein a tidal current can move forward/backward in the channel; a first water collection levee extending from the front end of the channel levees with reference to a movement direction of the tidal current and having a peak shape of which the width is gradually reduced towards the front side of the channel; a second water collection levee extending from the rear end of the channel levees with reference to the movement direction of the tidal current and having a peak shape of which the width is gradually reduced towards the rear side of the channel; and a waterwheel module which is inserted and installed in the installation groove and can generate power using movements of the tidal current.

A manufacturing method for a hydroelectric power generation system includes removing a transaxle including a first motor generator from an end-of-life hybrid electric vehicle, and assembling a hydraulic turbine to a rotary shaft coupled to the first motor generator in the removed transaxle. The rotary shaft to which the hydraulic turbine is assembled may be an engine shaft connected to an engine of the hybrid electric vehicle when the transaxle is mounted on the hybrid electric vehicle.

Disclosed are vertical axis turbines comprising: a turbine shaft; a plurality of helicoidal blades mounted on the turbine shaft, each blade comprising a front face and a rear face; and a plurality of venturis, each venturi comprising a channel extending through each of the plurality of blades from the front face thereof to the rear face thereof.

A floating drum turbine is used for generating the electrical energy from the kinetic energy of a water stream (sea wave or river flow) that provides the mechanical energy needed to rotate an electrical generator for generating the electricity. The drum turbine is installed on a buoyant skid anchored to the seabed by some chains/ropes to keep it in a fixed position and direction along the water stream. The turbine is coupled to an electrical generator with a power transmission system, and generates the electricity that is transferred to the coast using a cable system floated on the water surface.

A hydrokinetic energy interface device includes a hydrokinetic wheel and a moveable support structure with an angled frame. The angled frame mounted upon the moveable support structure connects between a hydrokinetic wheel and a counterbalance. A bearing is mounted at a vertex between a first end and a second end of the angled frame. The angled frame pivots to move the hydrokinetic wheel and the counterbalance in opposite vertical direction. The hydrokinetic wheel maintains vertical alignment as the angled frame pivots. The hydrokinetic wheel can be formed with interconnectable rim sections. The hydrokinetic wheel may be cantilevered out away from a riverbank by the counterbalance. The hydrokinetic wheel may be raised or lowered by actuation. The movable support structure supporting the hydrokinetic wheel may be rolled away from a free-flowing river for maintenance, repairs, or modification.

A water-driven turbine has an elongated endless conveyor with down and up streaming straightaways connected by travel-reversing turns. Paddles mounted on the conveyor present high resistance to waterflow on the downstream straightaway and low resistance to waterflow or the atmosphere on the upstream straightaway, the differential allowing the flow of water to continuously drive the conveyor which is connected to a power take-off shaft facilitating connection to a variety of energy-harnessing systems. The turbine can be towed, self-driven or mooring line manipulated to a flow site and is operable in unidirectional flows such as rivers and reversing flows such as tides at depths from surface to bottom. The paddles can be mounted or changed on shore, at the flow site and anywhere in between. The turbine is efficient in low and high velocity water flow, not easily damaged by floating debris, cavitation free and fish, mammal and environmentally friendly.

An arrangement for generating energy made up of at least two rotating bodies of revolution partially immersed in a dynamic fluid. The at least two rotating bodies of revolution have their longitudinal axis of rotation located perpendicularly to the flow of the fluid, and are further associated to support means and to drive means, being immersed about 30% of their diameter. One of the at least two rotating bodies of revolution is located upstream of said dynamic fluid with its longitudinal axis of rotation located in a longitudinal slider of the support means with the possibility of translation and variable rotation speed. The other of the at least two rotating bodies of revolution is located downstream of the dynamic fluid, with its longitudinal axis of rotation being attached to the support means, and with a rotation synchronized with the flow speed of the dynamic fluid.

A modular, electricity generating apparatus comprises an elongate, central member comprising a first end and a second end; at least one foil disposed about the central member in fluid interacting relation thereto; the solar foil comprising an outer surface having photovoltaic properties; the first end and the second end dimensioned and configured to be connected to a connecting node; and, the elongate central member at least partially formed of an electrically conductive material and configured to conduct electricity from at least one of the connecting nodes to the other of the connecting nodes.

An improved turbine over the old horizontal and vertical axis turbines because of its ability to capture several times the amount of wind. The basic design and process of this new machine can also work in the ocean at capturing ocean currents. Being Omni-directional (not having to turn into the wind) gives it one efficiency over the 3 bladed turbine. Another efficiency all embodiments have is its frictionless exponent. This quality helps save on wear and tear and maintenance cost. Most if not all past turbines have a static presents, being built in one basic wind capturing position. This new turbine is more dynamic because it can hide from wind damage and then open to capture more wind than its predecessors.

A water-driven turbine has an elongated endless conveyor with down and up streaming straightaways connected by travel-reversing turns. Paddles mounted on the conveyor present high resistance to waterflow on the downstream straightaway and low resistance to waterflow or the atmosphere on the upstream straightaway, the differential allowing the flow of water to continuously drive the conveyor which is connected to a power take-off shaft facilitating connection to a variety of energy-harnessing systems. The turbine can be towed, self-driven or mooring line manipulated to a flow site and is operable in unidirectional flows such as rivers and reversing flows such as tides at depths from surface to bottom. The paddles can be mounted or changed on shore, at the flow site and anywhere in between. The turbine is efficient in low and high velocity water flow, not easily damaged by floating debris, cavitation free and fish, mammal and environmentally friendly.