A hydrokinetic generator including: a submersible housing defining a conduit therethrough for the flow of a fluid; a turbine mounted to the housing comprising at least one impeller located in the conduit for rotation by said flow; and at least one electrical generator coupled to the at least one turbine for converting mechanical energy from the turbine to electrical energy, the electrical generator including a plurality of elongate members bearing one or more magnetic regions, the elongate members being disposed about the at least one impeller and fast therewith; and a number of windings located within material of the housing and arranged for electromagnetic interaction with said magnetic regions whereby in use rotation of the impeller moves the magnetic regions past the windings to thereby induce an electrical current in the windings. The impeller may comprise a plurality of spiral, helical blades disposed about a common axle from a leading end thereof to a trailing end wherein a radius of the blades increases exponentially from the leading end to the trailing end.

A wave energy conversion device whereby its structural design and positioning converts oscillating wave energy into unidirectional wave induced water flow. A judiciously placed upper closed perimeter boundary positioned on a submerged horizontally oriented surface pierced with an opening, focuses incident waves inward creating a resonant wave condition where the superposition of waves induces a predominantly downward unidirectional flow through the opening. A segmented sealed upper boundary results in the additional storage of water head due to the overtopping of waves, thus further smoothening and increasing the magnitude of the unidirectional flow. This wave energy converter can be utilized with unidirectional hydro turbines for electrical power generation.

A system for obtaining energy from surface waves is disclosed. The system can include an array of buoys. The array of buoys can include a framework having a plurality of vertical members. The array of buoys can also include a base buoy coupled to the framework to support the framework in a body of water and maintain the vertical members in a vertical orientation. The array of buoys can further include a plurality of movable buoys. Each of the plurality of movable buoys can be movably disposed about a different one of the vertical members and configured to move relative to the respective vertical members and the base buoy in response to a wave in the body of water. Additionally, the array of buoys can include an energy conversion device operable with each of the plurality of movable buoys to generate power from movement of the movable buoys relative to the vertical members.

A perpendicular axis turbine having at least two blades, wherein the blades are longitudinally offset with respect to one another, reducing the effects of blade-vortex interaction and providing increased power generation. In one embodiment, the blades are longitudinally offset such that the attachment point of one blade is halfway between the attachment points for the other blade.

A vortex generator for wind turbine blade is a vortex generator for wind turbine blade, the vortex generator being made of a resin, including: a platform; and at least one fin disposed projecting from an upper surface of the platform. The vortex generator includes a cavity that opens to a bottom surface of the platform and extends to an inside of the fin.

An apparatus and method for designing a diffuser-augmented wind turbine with significantly reduced time-averaged loads and significantly reduced dynamic amplification factors. Some embodiments have an annular airfoil in fluid communication with the circumference of a rotor plane, and a vertical surface with a substantially symmetrical aerodynamic form with an articulated portion.

An apparatus and method for designing a diffuser-augmented wind turbine with significantly reduced time-averaged loads and significantly reduced dynamic amplification factors. Some embodiments have an annular airfoil in fluid communication with the circumference of a rotor plane, and a vertical surface with a substantially symmetrical aerodynamic form with an articulated portion.

A wind power generating rotor system for a wind turbine. The rotor system includes a rotor assembly having a rotor axis and a plurality of rotor blades structured and arranged for rotation around the rotor axis by wind passing the rotor blades thereby capturing kinetic energy from the wind. A diverter assembly is provided having a plurality of diverters structured and arranged at one or both of inside and outside a perimeter defined by rotation of the rotor blades thereby increasing the power of the rotor system.

A wave power generation device, including a power generation assembly, a mooring system, a floating platform, floating towers, control cabins, a connecting member, and anti-sway plates. The floating platform is a square floating box. The power generation assembly includes a swing plate, a hydraulic cylinder, an energy accumulator, a hydraulic motor, a generator, a battery, and a power generation and distribution device. The floating platform includes a main deck. The main deck includes a manhole and a support for supporting the swing plate. The swing plate is connected to the support via a first hinge. One end of the hydraulic cylinder is connected to the swing plate, and another end of the hydraulic cylinder is connected to a floating platform. The mooring system includes four anchor windlasses. A method for operating and maintaining the wave power generation device is also provided.

Disclosed is a wave amplification power-generating boat, comprising float systems (1), a support system (2), a hydraulic turbine power-generating system (3) or a float power-generating system (7) or a canard-type power-generating system (8), a wind rudder system (4), a propeller (5), a mooring system (6) and a wave detector system (9). The float systems (1) are capable of moving on a support; the support system (2) is used to connect the float systems (1) at two ends, with the hydraulic turbine power-generating system (3) or the float power-generating system (7) or the canard-type power-generating system (8) installed in the middle, and installing the wind rudder system (4), the propeller (5), the mooring system (6), and the wave detector system (9); the hydraulic turbine power-generating system (3), etc., works and generates power by utilizing amplified waves in the middle of a boat; and the wave detector system (9) is used to detect and compute an average wave length, to adjust in a timely manner a distance between floating points (101) at two ends to be as close to the wave length as possible, and adjust the direction of the boat to be consistent with that of the wave. The wave amplification power-generating boat enables a high wave energy conversion efficiency, and has a very strong ability to wind and waves.