Disclosed is an air-compression energy-storage and power-supply system having air purification capability through using solar energy. The system includes: a solar energy power supply device, it utilizes solar energy to produce power for the system itself, and for users to use in daytime; an air purification device, with its exhaust fan connected to a transformer power distribution device to obtain the power for rotation, so that outside air flows into the air cylinder after filtering by the air filter, then the purified air is exited from the air cylinder to provide purified air; an air-compression energy-storage and power-supply device, used to compress the purified air into high pressure for storage, and the high pressure purified air is released at night, for the generator to produce power for user to use at night; and a wind power transmission device, disposed above the air purification device.

A wind turbine arrangement including a first rotatable blade arrangement and a second rotatable blade arrangement. The first blade arrangement forms part of a first wind turbine, and the second blade arrangement forms part of a second wind turbine. The second wind turbine can produce a rotative force to the first wind turbine. At wind speeds below that required to operate the first turbine, the second turbine may be operable and provide power to rotate the first turbine.

Disclosed is a ducted and balanced wind turbine, including: a spindle, a front cross bearing bracket, a radial magnetic levitation bearing, a cross bracket, an outer rotor vortex blade, a turbine shell, an outer rotor rotating body, an outer rotor armature coil, a conductive slip ring, an axial magnetic levitation bearing cross bracket, an axial magnetic leverage bearing, a rear cross bearing bracket, a spindle rolling bearing, an output wire, a carbon brush set, a permanent magnet, an inner rotor rotating body, an inner rotor vortex blade, an outer rotor dome, and a spindle dome. The radial and axial magnetic levitation devices and the carbon brush set are mounted on the inner wall of the turbine shell, forcing the outer rotor rotating body to rotate freely in the turbine shell through the magnetic levitation bearings.

The Cascaded Wind Turbine is a new concept of wind turbine design featuring multiple hubs in succession, each hub segment adds another tier that create a cascading blade configuration. Each blade set is connected to a separate rotor via a telescopic shaft.

By manipulating the fluid flow in the proximity of an object such as a fuselage, a wing, or the hull of ship, the wave drag associated with this object can be substantially reduced. This can be accomplished by locally changing both the fluid flow velocity and the pressure of the fluid flow.

A method and apparatus for producing electricity from a combination of three sources: ocean waves, wind and solar, includes converting an upward and downward motion of a buoyant platform into a rotational motion of a shaft using a plurality of blades mounted to the shaft, the blades causing the shaft to rotate from internal wind energy as the blades move up and down within a cavity. The shaft is coupled to a generator for producing electricity. A wind turbine is mounted to the buoyant platform for converting wind energy into electricity. Further, solar panels are included, for example, mounted to the buoyant platform and/or turbine blades of the wind turbine, the solar panels also generate electricity when exposed to light.

A wind plant includes at least one wind collector assembly configured to collect a wind stream; at least one booster arm in fluid communication with the at least one wind collector assembly, the booster arm configured to receive the wind stream and to increase the flowrate of the wind stream; and at least one exit conduit, the at least one exit conduit in fluid communication with the booster arm and rotatable with respect to the booster arm. The at least one exit conduit is configured to rotate with respect to the at least one booster arm in response to a thrust force generated by the wind stream exiting the exit conduit. A method of capturing energy from wind is also disclosed.

A wind-powered generator includes a housing having an inlet, an outlet, and a throat that are coaxial about an axis of symmetry of the housing. A nacelle includes a first rotor mounted on a first end of the nacelle and positioned at least partially within the inlet, the first rotor outputting a first power output, and a second rotor mounted on a second end of the nacelle, the second rotor being positioned at least partially within the outlet and having a diameter less than the first rotor. The second rotor outputting a second power output. The first and second power outputs are combined to provide a combined power output, and a nacelle ratio between outer diameters of the nacelle at the inlet and at the outlet is between about 1.60-1.70, and a housing ratio between inner diameters of the housing at the inlet and at the outlet is about 1.85-1.97.

Disclosed is an air-compression energy-storage and power-supply system having air purification capability through using solar energy. The system includes: a solar energy power supply device, it utilizes solar energy to produce power for the system itself, and for users to use in daytime; an air purification device, with its exhaust fan connected to a transformer power distribution device to obtain the power for rotation, so that outside air flows into the air cylinder after filtering by the air filter, then the purified air is exited from the air cylinder to provide purified air; an air-compression energy-storage and power-supply device, used to compress the purified air into high pressure for storage, and the high pressure purified air is released at night, for the generator to produce power for user to use at night; and a wind power transmission device, disposed above the air purification device.

The invention relates to propeller-type horizontal-axis wind turbine assemblies. All of the present assembly variants comprise, mounted on a tower, a wind turbine with two coaxial wind propellers on a rotating platform, a gearbox, systems for controlling the pitch angles of the blades and the position of the platform, and an electric generator. The design of the assemblies additionally includes improvements which make it possible to increase the efficiency with which the energy of the wind is utilized, increase electricity output, reduce service time, simplify manufacture and use, increase reliability and working life, and eliminate infrasound.