Abstract: A hydropower device for generating electric power comprises a pipe having an upstream portion and a downstream portion and being arranged to convey water. A valve is provided at the downstream portion and adjustable between a closed position hindering the water and an open position permitting the water to flow. A cylinder member defines an inner space and having a first end and a second end. The inner space extends away from the pipe along a centre axis (x) and receives water from the pipe via the first end when the valve is in the closed position. A piston is disposed in the inner space and movable back and forth along the centre axis. The piston moves away from the pipe by means of an overpressure arising when the valve is in the closed position.

Abstract: The present invention may be used for converting fluid flow into an alternate energy form. A generally cylindrical enclosure may have a side wall with a plurality of slots longitudinally formed therein and with two opposed ends. Two drive members of a shaft may be spaced apart, positioned longitudinally on a centerline, and rotatably attached each to one of the two opposed ends. Each of the two drive members at an interior end may have an orthogonal member attached and a paddle shaft may be attached at a leverage end of the orthogonal members. Multiple paddles may be circumferentially spaced and radially attached at a first edge to rotate on the paddle shaft with an outer edge disposed to allow extension and retraction through one of the slots.

Abstract: Flexible and elastic mechanisms for extracting power from a moving fluid. Sheet-like material is deformed during fabrication through an applied force so as to create undulations in said material, whose stresses are maintained through restraining components, thereby maintaining the occurrence of said deformations in the material. When placed in moving fluid, the resulting pressure differentials cause the positions of the undulations within the material to travel along said material in the same direction as the moving fluid. Power is extracted in one of two principle ways. The first is via a mechanical coupling of the sheet-like material to a rotating mechanism, which turns an electro-magnetic dynamo or other output device. The second is via the utilization of a flexible material which exhibits an electrical response to mechanical strain, whereby the strains caused by the travel of undulations along the material create an electrical current which is extracted via two or more electrodes.

Abstract: A turbine (2) driven electric power production system (1),—said turbine (2) arranged for being driven by a fluid (3) having a fluid speed (v) varying in time,—said turbine (2) connected to a hydrostatic displacement pump (6) further connected to a hydrostatic displacement motor (8) as part of a closed loop hydrostatic transmission system (7),—said motor (8) arranged for driving an electrical generator (9) supplying AC power (10) at a frequency (fg) near a given desired frequency (fdes), characterized by a closed loop system arranged for controlling a volumetric displacement (13) of the hydrostatic motor (8), comprising—a fluid speed meter (11m) arranged for producing a speed signal (11s) representing a speed (v) of said fluid (3), and—a rotational speed meter (12m) arranged for providing a rotational speed signal (12s) representing a rotational speed measurement (?) of said turbine (2), —a motor displacement control system (15) for continuously receiving said speed signal (11s) and said rotational speed signa

Abstract: A generator is provided including a rotatable pressure vessel with an inner and outer surface. Electromagnets are disposed on the inner surface of the pressure vessel. A biasing structure is configured to rotate within, and independently of, the pressure vessel and extends at least partly along a lengthwise dimension of the pressure vessel. The biasing structure has an axis of rotation that is within the circumference of the pressure vessel, and may be substantially parallel and coincident with a center axis of the pressure vessel. The biasing structure has a center of gravity at a radius away from the center axis of the pressure vessel. Armature coils are disposed on an outer portion of the biasing structure, and are positioned such that a relative motion between the electromagnets and the plurality of armature coils induces a current in the armature coils when a current is applied to the electromagnets.

Abstract: A miniature hydro-power generation system may include a hydro-power generator and energy storage devices. A flow of liquid may be used to rotate the hydro-generator to generate electric power at a generator output. The generator output may be electrically coupled to each of the energy storage devices so that the energy storage devices can be independently charged with the electric power produced by the hydro-power generator. The hydro-power generator and/or the energy storage devices can also supply electric power to a load. The energy storage devices may also be electrically coupled via a series/parallel switch so that at least two of the energy storage device may be switched between a series configuration and a parallel configuration.

Abstract: A hydrokinetic device is provided that extracts power from a water current. The device comprises a buoyant body and a rotor coupled to the buoyant body configured to drive a power generator. The buoyant body and the rotor jointly define a center of buoyancy and a center of gravity, the center of buoyancy being located above and upstream of the center of gravity.

Abstract: A method is disclosed for controlling a hydrokinetic device that includes an energy transducer. The method comprises setting a target condition for the hydrokinetic device, monitoring an actual condition of the hydrokinetic device, comparing the target condition to the actual condition to determine an error signal, and invoking a power control protocol with depth change protocol based on the error signal to maintain the hydrokinetic device at the target condition.

Abstract: Power generating equipment comprising a buoyant power generating apparatus and a support structure for the power generating apparatus, which support structure, in use, is disposed on the bed of a body of water, the power generating apparatus comprising a motor-driven winching device having a tether which is connectable at its free end to the support structure whereby retraction of the tether causes the power generating apparatus to be drawn downwardly through the body of water into engagement with the support structure, the power generating apparatus and the support structure being provided with means for aligning and latching the power generating apparatus with respect to the support structure upon engagement with the support structure.

Abstract: A device and method for producing rotational mechanical power is disclosed which has a plurality of hinged blades attached to a central circular hub. The device may be used to convert the kinetic energy from the movement of the wind, ocean or river currents, or tidal flows into useful rotational mechanical power. The rotational mechanical power may be converted into electrical energy. Each of the plurality of blades are attached to the central circular hub via a hinge. Each blade is also fitted with a blade limiter to restrict its motion to no more than 90° relative range from the tangent line to the central hub at the point where the blade attaches to the hub. The hinges and blade limiters allow the blades to both present a surface automatically to the motive natural fluid and to generate the maximum torque in one side and minimum resistance torque positions in the opposite side relative to the motion of the motive stream.

Abstract: An input shaft rotates at variable rotation rates and is driven by a variable source of energy or power such as by the propeller of a wind-driven electrical generator. The input shaft is connected to a clutch which is connected to an output shaft and which is operable to rotate the output shaft at a preselected or constant rotation rate. The clutch has a first rotor which electromagnetically interacts with a second rotor to create a torque to cause the second rotor to rotate. The interaction of the first rotor and the second rotor may be varied electrically or mechanically to vary the torque and in turn the rotation rate of the second shaft. The shaft is preferably connected to a synchronous generator; and the rotation rate of the output shaft is controlled so that the generator supplies power at an essentially constant rotation rate.

Abstract: A water current power generation system is provided, including a plurality of flotation tubes joined by a body structure; a plurality of ballast chambers joined by a body structure; a plurality of induction type power generation units disposed within housings associated with one or more of the flotation chambers, ballast chambers and body structure; and a plurality of propellers disposed in mechanical communication with each of the induction type generator units. Methods and means of deploying, positioning, maintaining, controlling and operating the system are also provided, as are detailed descriptions of novel inductor type generators used to obtain power from fast moving water currents, flotation tanks for tensioning the system against a submerged anchoring system disposed on an associated seafloor, and fluid-filled ballast chambers equipped with multiple sub-chambers that lend precision control and continuous adjustability to the system.

Abstract: A fluid flow energy capture device for power generation has a rotor with a substantially vertical axis and a plurality of vanes. A mount for the rotor allows the rotor to rotate in response to fluid flow such as wind contacting the plurality of vanes, and the mount puts the rotor in rotationally driving communication with a generator. The rotor has an open center which allows fluid communication from spaces between the vanes to above the rotor. A plurality of guide surfaces define channels that bias fluid flow to be tangential to the rotor.

Abstract: The present invention provides for a system to generate electricity from vehicular traffic and road infrastructure. Specifically, energy of a moving vehicle may be transferred via mechanic or wind energy into electricity. Additionally, shoulders of roads allow for installment of photovoltaic cells that provide for electricity while not interfering with normal traffic patterns in the least.

Abstract: A system capable of converting fluid energy into electrical energy in conditions of low fluid flow is provided. In an embodiment, the system may engage and disengage an energy converter via an automatic clutch. In an embodiment, the transmission of energy to an energy converter is controlled by switching the energy converter on and off. In another embodiment, the flow of electrical energy to an electrical load is controlled by a switching device. In another embodiment, a funnel is used for condensing the flow of fluid moving through the system.

Abstract: A linear hydrokinetic generator assembly generates power. An exemplary embodiment drifts a harnessing surface in a current of fluid away from the generator assembly and draws a cable attached to the harnessing surface from a cable spool as the cable is drawn by the drifting harness surface, wherein the drawn cable rotates the cable spool and generates power from the rotating cable spool.

Abstract: Flexible and elastic mechanisms for extracting power from a moving fluid. Sheet-like material is deformed during fabrication through an applied force so as to create undulations in said material, whose stresses are maintained through restraining components, thereby maintaining the occurrence of said deformations in the material. When placed in moving fluid, the resulting pressure differentials cause the positions of the undulations within the material to travel along said material in the same direction as the moving fluid. Power is extracted in one of two principle ways. The first is via a mechanical coupling of the sheet-like material to a rotating mechanism, which turns an electro-magnetic dynamo or other output device. The second is via the utilization of a flexible material which exhibits an electrical response to mechanical strain, whereby the strains caused by the travel of undulations along the material create an electrical current which is extracted via two or more electrodes.

Abstract: Accordingly, the system for extracting power from tidal or other water action in a water region having a bottom surface, comprises: a base assembly positionable on the bottom surface of the water region; a buoyant blade assembly mounted on the base assembly, the blade assembly including at least one buoyant blade member, wherein the blade assembly or the blade member is capable of oscillating through an angle, wherein the buoyant blade member is mounted such that when the base assembly is positioned properly in the water region relative to the direction of the tide or other water action, torque is generated by the oscillating movement of the buoyant blade assembly or the buoyant blade member, and wherein the base assembly includes a power-extracting mechanism responsive to the torque generated by the tide or other action of water or the buoyant blade assembly; and a system for coupling the torque to the power-extracting mechanism.

Abstract: Wind-driven electrical generators will slow and lose kinetic energy when the wind slows or stops. When the wind slows or stops, kinetic energy in the rotating turbine and other rotating components that would otherwise be lost, is conserved by supplying a supplemental mechanical energy to the rotating components using a battery-powered motor. The electrical power for the drive motor is obtained from solar-charged batteries. In an alternate embodiment, solar cells provide all of the energy for the drive motor.

Abstract: The invention relates to a method for operating a wind energy system wherein when a first settable boundary value (G1) is reached by a first parameter (M1) a process is automatically started whose course is monitored by measuring a second parameter (M2). By comparing the measured values of the second parameter (M2) with a second settable boundary value (G2), the first settable boundary value is changed upon reaching the second boundary value (G2) by the second parameter (M2).

Abstract: A wind turbine or other rotary device has its outer perimeter constructed with coils that form a rotor (26) of an electrical generator. A stator assembly (52) is positioned at the lower perimeter of the path of the rotor and includes stator halves that are juxtaposed the moving rotor for generating electricity. The stator halves include an air bearing that provides substantially frictionless contact with the rotor, allowing the free rotor to move with a minimum of resistance.

Abstract: A hydraulic power generating device may include a power generating hydraulic turbine having a plurality of first blades projected on an outer peripheral side and a cylindrical plate part which may be coaxially structured with a rotating center axial line of the power generating hydraulic turbine at a position adjacent in an axial direction to the first blades, and an ejection port for ejecting water may be opened both to the first blade and to the cylindrical plate part. Further, hydraulic power generating device may include a power generating hydraulic turbine having a hollow cylindrical body, a first cylindrical radial bearing and a second cylindrical radial bearing. The second radial bearing may be positioned at a second end part of the hollow cylindrical body with a shaft hole of the first radial bearing as the reference.

Abstract: A solar power arrangement for converting solar energy into electricity comprising; a solar chimney, the chimney having a flared base spaced from the ground the chimney including a transparent surface to allow solar energy to heat air within the solar chimney. A first air turbine drives a first generator, and the chimney including an exhaust. The first air turbine drives an air compressor and wherein the compressor includes an ambient air intake and a plurality of pipes for receiving compressed attached to the solar chimney. A plurality of heliostats focus solar energy on the pipes to heat the compressed air contained therein and a second turbine driven by expansion of the compressed air wherein the second turbine drives a second generator.

Abstract: An ocean energy harvesting system utilizes horizontal structural members that rotate in response to wave motion. The structural members are designed to capture energy in a line array that replicates the shape of the waves as they pass through the ocean. A generator platform is placed in the ocean environment or on the shore, and the structural members rotate under the platform or around a pivot post placed in proximity to the platform. The rotation drives a generator shaft due to direct attachment to the structural member or from a cable attached to a structural member some distance from the platform. The structural members can be of substantial length depending on the prevailing wave conditions at the site and the desired amount of energy capture. The system adjusts to differing water levels due to tidal shifts.

Abstract: A system for generating electricity including a vertical oriented tower comprising an intake opening for receiving fluid flow, a scoop that is moveably mounted to a base for directing the fluid flow to the intake opening, a fluid-activated mechanism that is automatically oriented in response to direction of the fluid flow, the fluid-activated mechanism being operatively connected to the scoop so that orientation of the fluid-activated mechanism in response to the fluid flow angles the scoop in the direction of the fluid flow, and a turbine that receives the fluid flow directed by the scoop to generate electricity.

Abstract: A power train for a wind power plant includes a rotor (1) for driving a gear (4), wherein the rotor blades (2) of the rotor are pivotally arranged around the longitudinal axis thereof on the hub of the rotor (1). A three-phase generator (5) is connected to the gear (4) and a power supply network (12). The gear (4) is also provided with an auxiliary variable speed drive (7). Each rotor blade (2) is provided with a drive for individually rotating around the longitudinal axis thereof for levelling the rotation speed and/or the torque of the power train.

Abstract: An electric generating system including a frame configured to couple to a tether system and at least one power generation module mounted to the frame. The at least one power generation module includes a holding structure attached to the frame, a rotating structure, including a rotor shaft, configured to rotate relative to the holding structure, a rotor attached to the rotor shaft, and a plurality of motor/generators attached to the holding structure, each including a drive shaft configured to engage with the rotor shaft.

Abstract: A water tower includes a reservoir configured to store fluid. The reservoir includes a bottom surface. The water tower also includes a recirculating passageway fluidly connected to the reservoir. The recirculating passageway includes a first end connected to and located near or below the bottom surface of the reservoir, and a second end connected to the reservoir above the bottom surface of the reservoir. The water tower further includes a pump located in the recirculating passageway and configured to pump fluid through the recirculating passageway, and a fluid-driven energy generating device fluidly connected to the recirculating passageway. At least a portion of fluid directed through the energy generating device is directed through the recirculating passageway.

Abstract: A liquid treatment system that may be self-powered includes a hydro-generator. A flow of liquid may be used to rotate the hydro-generator to generate electric power. The hydro-generator may include an outer housing and an inner housing. The inner housing may include a first hub removeably engaged with a second hub. During manufacture, a plurality of paddles may be replaceably engaged between the first hub and the second hub. Also during manufacture, an electrical generator may be disposed in the inner housing. In operation, a flow of liquid may strike the paddles causing the inner housing to rotate. During rotation of the housing, the electrical generator may produce electrical power.

Abstract: A system for providing electrical power from a current turbine is provided. The system includes a floatation device and a mooring. A water turbine structure is provided having an upper and lower portion wherein the lower portion includes a water fillable chamber. A plurality of cables are used to couple the system where a first cable couples the water turbine to the mooring and a second cable couples the floatation device to the first cable. The system is arranged to allow the turbine structure to be deployed and retrieved for service, repair, maintenance and redeployment.

Abstract: An environmental protective electrical power generating system is formed by a penstock connected at its opposite ends to a large sewer for conveying waste water from feeder pipelines to a sanitary treatment station. Sewer waste water is propelled through the sewer line by pumping equipment which simultaneously pulverizes most large objects carried by the waste water. The waste water is diverted, through a control gate, into the penstock where it flows through and operates one or more water-operated turbines. The turbines are operatively connected to electrical power generators for producing electrical power and dispersing the power through an electrical power transmission system. Depending upon the size of the sewer pipes, the volume of liquid flowing there-through, and the turbine and generator equipment, electrical power is generated without affecting the environment or ecology and without the use of fossil fuels.

Abstract: A system and process for generating hydroelectric power within a body of water relying on the pressure head existing between two depths of the water. A vertically arranged conduit or penstock has an upper water intake and is in fluid communication with a reservoir situated at a lower depth. In a first cycle, water flow is established in the conduit or penstock between the water intake and lower reservoir when the reservoir is substantially full of air. A turbine housing is mounted adjacent the reservoir at a lower depth than the water intake and houses an electric turbine generator having blades mounted within the conduit or penstock to be driven by the flow of water to generate electricity. As water is introduced into the reservoir, air is exhausted out an air exhaust tube to a point above the surface of the body of water. After the reservoir is generally full of water valves are provided to cease the flow of water through the water intake and flow of air out the exhaust tube.

Abstract: A method an apparatus for operating an underwater power plant including a support structure; at least one turbine; at least one electric machine configured to be operated as a generator or a motor, the at least one electric machine being in an at least indirect drive connection with the at least one turbine and the at least one electric machine in a motive operation is configured to drive the at least one turbine to produce a propulsive power; and a spacer element between the at least one turbine and the support structure, wherein the at least one turbine is attached to one end of the spacer element and a pivot joint to the support structure is attached to an opposing end of the spacer element, a linkage point of the pivot joint having an eccentricity which is a lateral offset to a force action line of the propulsive power.

Abstract: A system and process for generating hydroelectric power within a body of water uses head pressure existing between two depths of the water. A vertically arranged conduit has an upper water intake and is in fluid communication with a reservoir situated at a lower depth. In a first cycle, water flow is established in the conduit between the water intake and lower reservoir when the reservoir is substantially full of air but at a hydrostatic pressure less than the hydrostatic pressure at the top of the water conduit. A turbine mounted adjacent the reservoir and at a lower depth than the water intake drives an electric generator. As water is introduced into the reservoir, air is scavenged by a compressor and used to drive water from a second reservoir. After the first reservoir is generally full of water, valves are provided to cease the flow of water through the water intake and flow of air out the exhaust tube.

Abstract: According to the present invention, there is provided a power generator that can generate power having a predetermined voltage and a predetermined current even though external energy is slight or excessively strong when generating power based on water power or wind power, the power generator comprising: a magnet rotor that rotates upon receiving rotating force from a driving source; and a stator coil arranged to face magnetic poles of the magnet rotor, the magnet rotor including: a rotary shaft rotatably and axially supported by a housing; and permanent magnets that form a plurality of magnetic poles on a concentric circle with the rotary shaft at the center. The stator coil includes: a plurality of coreless winding wires arranged to face the magnetic poles formed in the rotor; and a three-phase output terminal.

Abstract: A system is adapted to extract energy from flowing liquid. The system includes at least one vertically-extending vane adapted to move in response to the flowing liquid. The vane has a vertical length wherein at least a portion of the vane can be positioned below a surface of a body of liquid such that the vane forms a swept area defined at least partially by the vertical portion of vertical lengths of the vane positioned below the surface. The system further includes a mechanism adapted to selectively vary the swept area.

Abstract: A power generation apparatus is disclosed. The apparatus includes a turbine rotor to generate mechanical energy from a flow of a fluid, an induction generator coupled to the turbine rotor to convert the mechanical energy into electrical energy, a fluid speed sensor to output a fluid speed signal indicative of a speed of the fluid flow, and a controller electrically coupled to the induction generator and to the fluid speed sensor.

Abstract: A supplemental power source for a building or other structure is provided. Power is generated by converting mechanical energy derived from a fluid into electrical energy. The fluid can be, for example, in the form of air in a building air duck or water in building water lines. The invention includes a specially designed turbine enclosure through which the fluid passes. The enclosure has a Venturi area which results in movement of the fluid at a rapid speed through the turbine. An electric generator with a ratable blade also is provided within the Venturi area in order to take advantage of the faster moving fluid. The faster the fluid moves, the more energy can be converted by the generator. The generator can be constructed with a plurality of electric coils and magnets which can be arranged in series/parallel combinations depending on the power requirements of a particular application.

Abstract: A wave energy harvester (100A) includes an element (120A) that converts forward and/or backward of water in a wave (102A, B, C) passing the harvester (100A) into upward and/or downward movement to thereby increase the vertical amplitude of the harvester (100A) relative to the sea floor (104A, B, C). In most preferred aspects, the element (120A) is a hydrofoil that is coupled to the harvester (100A). Further preferred aspects include those in which part of, or the entire harvester (100A) has a neutral buoyancy, and where energy is extracted from the downwards movement of the neutrally buoyant part (100A) after a wave has lifted that part (110A).

Abstract: An energy converter for inducing membrane vibrations of a membrane when subject to a fluid flow, and converting the vibrations into another form of energy, such as electricity. The energy converter includes at least one flexible membrane, at least one electrical conductor and at least one magnetic field generator configured to apply a magnetic field to the at least one electrical conductor. One of the electrical conductor and the magnetic field generator is attached to the membrane and configured to move with the membrane. The other one of the electrical conductor and the magnetic field generator has a curved surface bending towards the membrane. When subject to a fluid flow, the membrane vibrates and creates a relative movement between the conductor and the magnetic field, which induces a current.

Abstract: There is provided a power generation and distribution system for use in combination with a utility conduit having fluid passing therethrough. The power generation and distribution system includes a rotation element disposable within the utility conduit. The rotation element rotates in response to fluid passing within the utility conduit. A power generator is in mechanical communication with the rotation element, and generates power in response to rotation of the rotation element. This system also includes a power distributor in electrical communication with the power generator and electrically connectable to a power outlet to distribute power thereto.

Abstract: A miniature hydro-power generation system includes an outer housing and an inner housing. The outer housing may receive a flow of liquid flowing in a first direction at a predetermined range of pressure. The flow of liquid may be decreased by a predetermined amount of pressure and increased by a predetermined amount of velocity and channeled to a hydro-generator included in the inner housing with an inlet nozzle. The flow of liquid may be channeled with the inlet nozzle to flow in a second direction that is substantially perpendicular to the first direction. Upon transfer of kinetic energy in the flow of liquid to the hydro-generator, the inner housing may rotate in the second direction. The flow of liquid may then be channeled back to the first direction and out of the housing with an outlet nozzle. The outlet nozzle configured to increase the pressure and decrease the velocity of the flow of liquid to minimized non-laminar flow characteristics.

Abstract: A power generator includes at least one underwater turbine unit providing a housing having a flow channel therethrough and at least one turbine means mounted in the flow channel for rotation in response to water flow through the flow channel. The turbine unit provides a turbine unit part releasably mountable in the turbine unit. The turbine unit part includes at least one of the at least one turbine means and a pump means. The turbine unit part is releasably mountable through an aperture in a side wall of the housing.

Abstract: Hydraulic system for driving an auxiliary power source is provided, which is specifically adapted for use with a system for controlling hydraulically driven AC generator. The system includes a hydraulic pump and hydraulic motor that are connected by a fluid circuit. The hydraulic motor drivably connected to an AC generator and is operated in a manner to generate a stable AC power output. The system may include a valve which bypasses fluid around the motor or a variable displacement pump so that the fluid flow rate through the hydraulic motor is controlled in a manner to maintain the desired AC generator output level. Sensors are further provided measuring operating parameters of the system so that the controller can maintain desired operating condition limits.

Abstract: A bearingless floating wind turbine has a tall and narrow main support structure with a center of buoyancy located well above the center of gravity to provide stability to the wind turbine while supported for rotation in a body of water, a vertical axis turbine blade extends from the main support structure and rotates together under a wind, and a non-rotating shaft extends through the main support structure with a vertical axis direct drive generator connected between the main support structure and the non-rotating shaft to produce electricity when the main support structure rotates. an anchor line connected to the non-rotating shaft prevents the floating wind turbine from drifting in a body of water.

Abstract: The invention provides a fluid-dynamic renewable energy harvesting system which includes fluid-foil means for interfacing with a fluid current such as a water current or wind or both, and which includes energy harvesting means utilizing fluid current driven periodic motion of the fluid-foil means for capturing fluid-dynamic renewable energy and converting it into usable energy in a desired form such as electricity. The invention provides devices, methods and systems for harvesting renewable energy for small-scale, medium-scale and large-scale applications, to provide real and substantial benefits towards efficiently fulfilling energy needs while also more broadly serving humanity and our global environment. The various embodiments of the invention provide energy with zero consumption of fossil fuels and zero emissions of greenhouse gases, and some selectively sited embodiments can beneficially counter global warming induced ice melting.

Abstract: A roadway system for energy generation and distribution is presented. In accordance with one embodiment of the invention, the roadway system comprises a plurality of wind energy generating devices, and a roadway system electricity grid. The wind energy generating devices are electrically connected to the roadway system electricity grid and are positioned on part of or near to a road in a system of roads and are optionally fixed in a position such that a multi-form, wind energy gathering network can be formed.

Abstract: A power distribution controller includes electronic circuitry operable to receive power and distribute power, for simultaneous consumption, to a first power load and to one or more second power loads. The electronic circuitry is also operable, to monitor the amount of power consumed by the one or more second power loads, and determine whether or not the received power is or substantially is the maximum amount of power available to be received. In response to the amount of power consumed by the one or more second power loads, and the amount of received power relative to the maximum amount of power available to be received, the electronic circuitry diverts power to the first power load to cause the received power to be or substantially be the maximum amount of power available to be received.

Abstract: A system for providing electrical power from a current turbine is provided. The system includes a floatation device and a mooring. A water turbine structure is provided having an upper and lower portion wherein the lower portion includes a water fillable chamber. A plurality of cables are used to couple the system where a first cable couples the water turbine to the mooring and a second cable couples the floatation device to the first cable. The system is arranged to allow the turbine structure to be deployed and retrieved for service, repair, maintenance and redeployment.

Abstract: Reversible hydroelectric device that can be installed on an outside pipe, comprising a hydraulic power unit comprising a hydraulic machine comprising a centrifugal pump that can be reversed as a turbine and a hydraulic circuit having bypass branches and motorized valves allowing circulation of water in said hydraulic machine in one direction or the other irrespective of the direction of circulation of the water in said outside pipe; an electric machine coupled to said hydraulic machine and comprising an asynchronous motor that can be reversed as an asynchronous generator; and an electronic system comprising a programmable controller for adjusting and/or regulating said valves and an electronic variator for adjusting and/or regulating the rotation speed of said electric machine so that the pressure and/or flow rate downstream of the hydraulic machine depending on the direction of circulation is/are stabilized or adjusted to at least one set point value.