A fluid flow induced oscillating energy harvester includes a stand supporting the harvester in a fluid flow; a support member mounted for movement relative to the stand in a direction perpendicular to the flow direction; a bluff body positioned substantially perpendicular to the flow direction and pivotally mounted to the support member at a position off-center from the center of mass of the bluff body, wherein sufficient fluid flow causes an oscillating movement of the bluff body and the support member relative to the stand; and an electrical generator coupled to the support member and configured to convert oscillating movement of the support member to electrical power. The harvester may include a support member spring supporting the support member for oscillation about a support member rest position wherein the support member spring exhibits a higher stiffness at higher oscillation amplitudes of the bluff body and the support member.

The Barton Float Generator is a device that uses water currents, water waves or water elevation changes to push/pull magnets threw electrical coils to generate electrical energy.

Disclosed herein is a wind power generation system using a dynamic lift generation disk structure unlike a horizontal-axis wind turbine(HAWT) or vertical-axis wind turbine(VAWT) which uses blades. The wind power generation system includes a column and an oscillating unit. The oscillating unit includes a donut shape wing(disk) surrounding the column, which can convert kinetic energy into electric energy when the unit is moving up or down by dynamic lift.

A lift assisted magnetic power device adapted to convert rotational energy into electrical current, said device comprising: a stand; a rotatable central axis mounted on said stand; a plurality of cylinders having a first extremity attached to said central axis and having a second extremity extending outwardly therefrom; at least one magnet contained within each one of said plurality of cylinders, said magnets being free to move along the cylinder between a first position proximate said first extremity and a second position proximate the second extremity; a coil surrounding each one of the cylinders and arranged in such a way as to be able to generate an electrical current as the at least one magnet passes through the coil; and a connection capable of carrying said electrical current from said coil to a circuit (power grid) or powers source (such as a battery).

A system and method for a for a wave energy converter device that is an axisymmetric point absorber which operates in a tension only condition over a large stroke that can operate in the given wave environment so as to eliminate the need for end stops in normal operation whereby the wave energy converter device has a floating hull with an interior Power Take Off (PTO) that uses an impedance control scheme for impedance matching with the wave environment in which it is deployed so as to maximize electrical power output as compared with a passively operating device of similar size.

A linear generator includes one or more helices, and one or more magnet members movable relative to a first helix to generate electric energy within the first helix. The first helix includes a first coil. The first helix and/or the magnet members have a density less than that of water such that the first helix and/or the magnet members have buoyant properties when the linear generator is at least partially submerged in the water.

Systems and methods for use in capturing energy from natural resources. In one form, the systems and methods capture energy from natural resources, such as movement of fluid in a body of water, and convert it into electrical energy.

A magnified linear power generation system. The magnified linear power generation system may be used with a vehicle and include a mechanical magnification component and a linear power generator. The linear power generator can have a mover and a stator. The mechanical magnification component can be coupled at opposite ends to the mover and to a force receiving surface of the vehicle. When the mechanical magnification component receives a force and a velocity from the force receiving surface, the mechanical magnification component may magnify the velocity and transfer the magnified velocity to the mover. The mover may move along the stator and convert the input mechanical energy into electrical energy. The mover may be coupled to a biasing component distal from the mechanical magnification component. The biasing component can apply a biasing force to the mover to position the mover at a neutral location in the linear power generator.

A wind turbine and wave/tidal energy apparatus has a vertical axis blade assembly, a lower cylindrical tube and an upper cylindrical tube. A rotor shaft is connected to the blade assembly and the upper cylindrical tube. A magnetic chamber is housed inside an upper cylindrical frame and is connected with the blade assembly through the rotor shaft. The frictionless levitation chamber is housed inside the upper cylindrical frame. The rotor shaft may protrude through the magnetic chamber into the frictionless levitation chamber and may have a magnet attached on the end of the rotor shaft. The magnetic array chamber is housed inside the lower cylindrical frame and may have a magnetic array axle with plurality of fixed magnets on it. The magnetic array axle may protrude into the frictionless levitation chamber and have a magnet attached to it. The floating inductive coil is located externally of the lower cylindrical frame.

The present invention pertains to systems and methods for controlling machines that generate electricity using a source of renewable energy, namely gravity. In overview, an electro-magnetic subsystem of the machine harvests the kinetic energy of a buoyant shuttle as it falls through air and into a bi-level tank. The shuttle is then arrested in the bi-level water tank and returned, by virtue of the shuttle's buoyancy, to its start point for a subsequent duty cycle. The return of the shuttle is made possible by a hydro-pneumatic subsystem of the machine that overcomes the potential energy needed to raise and lower the upper water level in the bi-level tank to compensate for a transit of the shuttle through the tank. The hydro-pneumatic subsystem does this by cyclically maintaining the required difference in water levels in the bi-level tank.