An underwater ducted hydroelectric power generation system is provided, including a ducted U-shaped pipe, a floating installation platform, a lifting pipe, a ducted coreless hydroelectric generator and a ducted coreless water transfer pump. The ducted U-shaped pipe is arranged underwater. The floating installation platform is configured to fix the ducted U-shaped pipe. A lower end of the lifting pipe is fixed on an underwater ground, and an upper end of the lifting pipe is slidably connected to the floating installation platform. The ducted coreless hydroelectric generator is fixedly provided in a water inlet pipe of the ducted U-shaped pipe. The ducted coreless water transfer pump is fixedly provided in the ducted U-shaped pipe.

A turbine for an underwater power station includes a rotor drum having blades that for each revolution are moved in and out of the drum, where the two end-edges of each of the blades are arranged slidingly in a corresponding stabilizing, linear, radially-oriented grooves in a rotational plate that is oriented perpendicular to the rotational axle. This way, the ends of the blades are supported when exposed to water flow while being outside the drum.

This invention relates to the creation of electrical energy ad-hoc, for purposes of charging a battery in a mobile device, where a typical battery charger would not be practical. The system is comprised of a plastic multi-bladed propeller attached to a mechanical shaft on the one end and a series of permanent magnets attached to the shaft on the other end which create an electromagnetic field as they rotate through a series of copper wound coils, wherein said coils are attached to a circuit board further comprising a thermistor and capacitor network attached to a cable which has an interchangeable plug end that can be modified to be attached to a cellular phone, laptop computer, flashlight, game-boy, or any other portable battery powered device, in order to charge the device's internal or external battery part on the go.

This inventions comprised of a rotor, commutator, a shaft, a propeller, and a totally enclosed waterproof housing, attached to a mounting clamp as well as a cable which can be universally adaptable to any mobile device who's battery(ies) requires charging, while away from home, or out in the field, away from other forms of power generation, including solar power.

This device lends itself to being easily fitted to the handlebars of a bicycle, the submerged portion of a row boat, or the exterior of any object that moves through the air or through water that can turn a propellor blade, or turbine fins, or any so configured device, attached to a shaft as described under the teachings herein.

The application relates to unidirectional hydrokinetic turbines having an improved flow acceleration system that uses asymmetrical hydrofoil shapes on some or all of the key components of the turbine. These components that may be hydrofoil shaped include, e.g., the rotor blades (34), the center hub (36), the rotor blade shroud (38), the accelerator shroud (20), annular diffuser(s) (40), the wildlife and debris excluder (10, 18) and the tail rudder (60). The fabrication method designs various components to cooperate in optimizing the extraction of energy, while other components reduce or eliminate turbulence that could negatively affect other component(s).

A permanent-magnet direct-drive wind power generator, a system and a stator thereof are provided. The stator includes a stator support, a stator iron core arranged around an outer peripheral wall of the stator support and a blade side tooth pressing plate arranged on an axial end face at a blade side of the stator iron core. At least one first air hole is provided in the outer peripheral wall of the stator support, and at least one second air hole is provided in the blade side tooth pressing plate, and further includes at least one air flow passage via which the first air hole and the second air hole are in communication with each other, and the air flow passage passes through the interior of the stator iron core. The stator can introduce air flow inside the stator support to an axial end face of the stator iron core.

The present invention relates, in part, to a wave powered electrical generator having a core electrically generating component that spins in one direction with the rise and fall of a wave. In certain aspects, it includes an apparatus, system, and method for converting wave energy into electricity. The apparatus includes a housing; an inner core within the housing that rotates in at least one direction; a first set of electrically conductive wire coils coupled to a peripheral wall of the inner core; a second set of electrically conductive wire coils adjacent to the inner core; a plurality of sliding elements coupled to a housing wall and slidable along a least a portion of the housing wall; and a buoy coupled to the sliding elements on an external side of the housing.

Micro-windmills, micro-systems including micro-windmills, and methods of forming the same are described. The micro-systems with a micro-windmill are configured to withstand wind pressures and environmental conditions and can be used for various applications.

A horizontal axis wind turbine which includes a plurality of blades that rotate at relatively low rpms and produce a high torque to rotate a generator is described. The wind turbine provides more power at low to moderate wind speeds than conventional wind turbines, produces more power at low wind speeds while still operating at high wind speeds, begins generating power at very low wind speeds, produces less noise, and reduces animal (e.g., bird and bat) collisions. The method determines the number of blades for the wind turbine based upon the desired rpm for the wind rotor and the generator configuration is based upon the estimated torque generated by the number of blades.

An apparatus comprising: a traveler connected to an elongate track; a stator comprising an elongate conductor spaced from the elongate track, a first ferromagnetic unit, and a second ferromagnetic spaced from the first ferromagnetic unit, wherein each ferromagnetic unit comprises a first end proximal to the conductor and a second end distal to the conductor; and a translator coupled to the traveler comprising a base partially surrounding the conductor and extensions positioned on either side of a sequence of ferromagnetic units.

A multiple radial gap BLPMDC/BLPMAC motor/generator suitable for direct drive wind or other fluid medium driven turbines or other rotary machine application. Each rotor and stator segment are housed in a fixture having an intermediate interior ramp angularly inclined at an angle of from about 10 to about 80 to cause the rotor/stator segments to interact at the axis of rotation of the fluid medium driven rotating machine at the same angle.