A wind turbine system to provide electrical power in areas not connected to the electrical power grid. The wind turbine system includes a frame and a rotatable shaft supported by the frame. A ring and idler gear assembly is coupled to the rotatable shaft. An upper rotor assembly is coupled to the rotatable shaft. The upper rotor assembly is configured to rotate in a first direction and thereby to rotate the rotatable shaft in a first direction. A lower rotor assembly is coupled to the ring and idler gear assembly. The lower rotor assembly is configured to rotate in a second direction which is opposite of the first direction and thereby to rotate the rotatable shaft in the first direction via the ring and idler gear assembly.

The present invention is an energy storage system comprising a mechanical bellows having an outer flexible material casing with one or more functional elements that operate as actuators for expanding and contracting the outer flexible material casing to store or deliver energy.

A power generation device is adapted to be driven by ocean currents, and includes a craft body unit, a plurality of blade units, a plurality of power generators, and a plurality of sails. The blade units are mounted on the craft body unit, and are adapted to extend into the sea and to be driven rotatably by the ocean currents. The power generators are mounted on the craft body unit and connected respectively to the blade units for converting a kinetic energy of the blade units into electrical energy. The sails are mounted on the craft body unit for capturing the wind to maintain a location of the craft body unit against drifting from a force of the ocean currents applied to the craft body unit.

A wind turbine system to provide electrical power in areas not connected to the electrical power grid. The wind turbine system includes a frame and a rotatable shaft supported by the frame. A ring and idler gear assembly is coupled to the rotatable shaft. An upper rotor assembly is coupled to the rotatable shaft. The upper rotor assembly is configured to rotate in a first direction and thereby to rotate the rotatable shaft in a first direction. A lower rotor assembly is coupled to the ring and idler gear assembly. The lower rotor assembly is configured to rotate in a second direction which is opposite of the first direction and thereby to rotate the rotatable shaft in the first direction via the ring and idler gear assembly.

A rotor for a vertical axis wind turbine generator features a flywheel having first and second faces located opposite one another across a thickness of the flywheel, and a circumferential perimeter edge joining the first and second faces together around the central axis at a perimeter of the flywheel. A series of cavities are spaced radially inward from the circumferential perimeter edge and open into the flywheel from the first face on a path disposed circumferentially about the central axis. A series of permanent magnets carried in the cavities have the opposing poles of adjacent magnets facing in the same axial direction. The recessed magnet configuration avoids the separate magnet-retention means required for flush-mount configurations, and increases the performance of the generator.

The present invention is a wind generator system particularly suitable for small wind applications that harnesses low velocity wind effectively. The wind generator system comprises a drive shaft; one or more retreating blades and one or more advancing blades attached to the drive shaft and extending radially outwardly therefrom; a generator assembly coupled to the drive shaft and effective for generating electrical power; and a energy storage system comprising a mechanical bellows.

The present description relates to a tower-mounted wind power system that comprises a supporting structure configured to support and protect a vertical-axis wind turbine arranged inside said structure, wherein the vertical-axis wind turbine comprises a variable number of air-collection levels, each of said air-collection levels made up of a propeller, wherein the vertical-axis wind turbine is made up of the propellers of the air-collection levels and a vertical shaft, each of the propellers of the turbine comprising a first and second plurality of air-collection elements in order to improve the collection of wind power.

A rotor for a vertical axis wind turbine generator features a flywheel having first and second faces located opposite one another across a thickness of the flywheel, and a circumferential perimeter edge joining the first and second faces together around the central axis at a perimeter of the flywheel. A series of cavities are spaced radially inward from the circumferential perimeter edge and open into the flywheel from the first face on a path disposed circumferentially about the central axis. A series of permanent magnets carried in the cavities have the opposing poles of adjacent magnets facing in the same axial direction. The recessed magnet configuration avoids the separate magnet-retention means required for flush-mount configurations, and increases the performance of the generator.

A wind turbine comprising a support structure for supporting a rotatable, substantially vertical hub wherein at least one substantially horizontal support arm is connected to the hub. At least one wind trap is connected to each of the at least one support arm, and each of the at least one wind trap supports at least one petal that may move between an open position, wherein wind is not blocked by the at least one petal, and a closed position, wherein the at least one petal blocks the wind thereby causing the wind to move the at least one wind trap and rotate the hub.

A wind turbine comprising a support structure for supporting a rotatable, substantially vertical hub wherein at least one substantially horizontal support arm is connected to the hub. At least one wind trap is connected to each of the at least one support arm, and each of the at least one wind trap supports at least one petal that may move between an open position, wherein wind is not blocked by the at least one petal, and a closed position, wherein the at least one petal blocks the wind thereby causing the wind to move the at least one wind trap and rotate the hub.