Local electrical power generation using a self-sustaining, self-contained recirculating fluidic flow generating apparatus capable of operating a power wheel with any one of several different fluids is interconnected using a series of gears to an electrical power generating apparatus. The fluid is used to move and continue moving the power wheel in a single direction using a top fed overshoot and back flow method to produce rotation of the wheel. Movement of the wheel produces enhanced rotational force through the interconnection to and through the series of gears ultimately powering the electrical generating apparatus to produce electrical power sufficient to sustain the generating apparatus and power itself and a limited number of electrical devices.

The invention concerns a method for coupling a hydroelectric power plant in a turbine mode to a grid, in order to generate power for a grid, said hydroelectric power plant comprising at least a first hydroelectric unit (10) and a second hydroelectric unit (100), each provided with a runner (6) mechanically coupled to a shaft line (8) and to a generator, a distributor (4) comprising guide vanes to control a flow of water to said runner, said hydroelectric power plant further comprising a variable frequency drive (20), the method comprising: a) starting the rotation of at least said first hydroelectric unit (10) and said second hydroelectric unit (100); b) connecting the variable frequency drive (20) to the generator of the first hydroelectric unit (10) and to the grid and stabilizing the speed of the first hydroelectric unit c) connecting the first hydroelectric unit (10) to the grid and disconnecting the generator of the first hydroelectric unit from the variable frequency drive (20); d) connecting said variable frequency drive (20) to the generator of the second hydroelectric unit (100) and to the grid and stabilizing the speed of the second hydroelectric unit; e) connecting the second hydroelectric unit (100) to the grid and disconnecting the generator of the second hydroelectric unit from said variable frequency drive (20).

The invention concerns a method for starting a hydroelectric turbine (10) in a pumping mode, said turbine being provided with a runner (6) mechanically coupled to a shaft line (8) and a variable speed electric motor connected to a grid, a distributor (4) comprising guide vanes to control a flow of water to said runner, the method comprising: a) a step of operating the variable speed motor at least partly at fixed speed, said guide vanes being only partially opened, and of defining or calculating: data of a plurality of hydraulic characteristics (C.sub.1, C.sub.2, C.sub.i) of the turbine for an operation without cavitation; data of an operation range of the electric motor, giving the speed of the motor as a function of its power; b) then a step of operating the turbine in a power control mode.

A power production system is provided that includes: a hydraulic turbine, installable in a penstock and being rotatable in a first rotation direction by effect of a flow of fluid flowing in the penstock in a downward direction; an energy converter group; an accumulator; a control unit, configured to operate the system in a power generation mode, in which the energy converter group receives an input mechanical power from the hydraulic turbine rotating in the first rotation direction, generates an output electric power and supplies said output electrical power to an external grid and/or to the accumulator, and in a downward pushing mode, in which the energy converter group absorbs an input electrical power from the accumulator and generates an output mechanical power to move the hydraulic turbine.

The invention concerns a method for starting a hydroelectric turbine (10) in a pumping mode, said turbine being provided with a runner (6) mechanically coupled to a shaft line (8) and a variable speed electric motor connected to a grid, a distributor (4) comprising guide vanes to control a flow of water to said runner, the method comprising: a) a step of operating the variable speed motor at least partly at fixed speed, said guide vanes being only partially opened, and of defining or calculating: data of a plurality of hydraulic characteristics (C.sub.1, C.sub.2, C.sub.i) of the turbine for an operation without cavitation; data of an operation range of the electric motor, giving the speed of the motor as a function of its power; b) then a step of operating the turbine in a power control mode.

When it is not possible for a power generation device to operate coupled to an electric power system, an autonomous operation of connection and disconnection of a load of the power generation device is performed along an efficiency-characteristics curve within a speed range from a rated speed to a maximum speed in the efficiency-characteristics curve of an energy source. During the autonomous operation, an aperture command is outputted to an inlet valve of a water turbine and a first converter is operated in a converter mode when an operation preparation command is outputted by a control unit, a second converter is operated in an inverter mode when a voltage is established by of a DC linkage unit, and the load is connected when the operation preparation is completed.

A device and method for starting a pumped storage group, and a pumped storage system are disclosed. The device includes: an acquisition module configured to acquire starting data of the group in real time; a first determination module configured to determine a real-time speed versus time curve for the group based on the starting data; and a correction module configured to correct a starting speed of the group based on a deviation between a reference speed versus time curve cluster and the real-time speed versus time curve. The real-time speed of the group during starting is visualized through a curve fitting procedure to form the real-time speed versus time curve, the real-time speed versus time curve is compared with a favorable history operation curve, and the deviation between the real-time speed versus time curve and the favorable history operation curve is corrected to adjust the starting speed of the group.

The Utility Scale Hydro Pump (USHP) is a hydromechanical system that uses a water-moving vehicle in a uniquely configured water tower to generate hydropotential energy and electricity. The vehicle operates in a lower chamber of the water tower. An upper chamber in the water tower has two distinct compartments: a body chamber just above the lower chamber to hold water for the vehicle to pump, and a tall and slender head chamber for the head. Lifting the vehicle from the bottom of the lower chamber pushes up water in the upper chamber into an upper reservoir. As the vehicle is lifted, a void is generated in the lower chamber. The void in the lower chamber is filled with water from a lower reservoir. Releasing water from the upper reservoir operates a turbine generator to generate electricity. Hydro-discharge from a turbine generator is collected in the lower reservoir and recycled.

A device and method for starting a pumped storage group, and a pumped storage system are disclosed. The device includes: an acquisition module configured to acquire starting data of the group in real time; a first determination module configured to determine a real-time speed versus time curve for the group based on the starting data; and a correction module configured to correct a starting speed of the group based on a deviation between a reference speed versus time curve cluster and the real-time speed versus time curve. The real-time speed of the group during starting is visualized through a curve fitting procedure to form the real-time speed versus time curve, the real-time speed versus time curve is compared with a favorable history operation curve, and the deviation between the real-time speed versus time curve and the favorable history operation curve is corrected to adjust the starting speed of the group.

A kinetic hydroelectric energy pumped apparatus (KHEPA) motor for charging electric vehicles (EVs) or providing an off-grid power supply includes a robine in a housing; a battery; an inverter; a transformer; a voltage regulator; a pump-motor; a fluid tank; a fluid; a nozzle; a stator; a wiring harness; a relay; a fluid filler intake hose; pump hoses; a robine outtake hose; and a rectifier, with an optional starter pump. The KHEPA motor may include a central processing unit (CPU) operably connected to the battery, which incorporates the inverter, the transformer, the voltage regulator, and the relay. The robine includes a rotor water wheel, and a plurality of magnets configured to fit inside the stator. The pump conveys the fluid for delivery through the nozzle, rotating the robine and revolving the stator, thereby converting mechanical energy into electricity which may be used or stored in the battery for later use.