The invention relates to a device for thermoelectric storage or energy conversion, reducing the complexity, the thermodynamic irreversibilities and the costs of previous solutions.

The device consists of main pressurized tanks (1THERMO) (1TRANSIT), containing the hydraulic fluid (3), the propellant fluid (2), liquid communications (7), equipped with hydroelectric conversion assemblies for pumping (6) or turbining (5) and including heat exchange systems (8COND) (8EVAP).

The device may include mobile physical separations (11) between fluids, hot (15), or cold (16) thermal reserves, secondary tanks (13) equipped with pipes (14).

The device is intended for energy storage, in particular intermittent renewable energies, economical production of Cold and Hot, and net electricity generation exploiting weak thermal sources.

An energy control system (ECS) for controlling an energy storage system (ESS's) that includes energy storage devices(s) or an energy storage combination (ESDC's) including ≥1 of the energy storage devices and ≥1 of the energy storage combinations. A power conversion system is coupled to an output of the ESDC, and a transformer is coupled to an output of the power conversion system. The ECS includes an ECS server and an ESS adapter configured for providing an interface between ECS server and the ESS. The ECS server is configured for reading status data from the ESS and submitting schedules including selected charging and discharging times to the ESS, monitoring or displaying a variance between an expected performance of the ESS based on the schedules and an actual ESS performance, and responsive to the variance being determined to be above a predetermined threshold, sending an update of the schedules to the ESS.

A system for energy storage and electricity generation is described. The system includes an energy storage system providing compressed air and an electricity generation system. The electricity generation system includes an airlift pumping system pneumatically coupled to the energy storage system. The airlift pumping system includes a water collecting tank containing collecting water and a riser tube having a base immersed in the collecting water and configured for injection of the compressed air into the riser tube through the air pipeline to provide air bubbles within the riser tube that produce an upward flow of the collecting water together with the air bubbles. The electricity generation system also includes a hydro-electric power system driven by upward flow of the collecting water together with the air bubbles to produce electricity, and a water heating system for heating the collecting water in the water collecting tank.

A method of controlling a power generation apparatus and a pumped storage power generation apparatus including a motor directly connected to a rotor of a generator or generator motor, the method performing speed control by providing a guide vane opening degree command to the motor, the guide vane opening degree command being calculated by a rotational speed controller including a proportional control element, an integral control element, and a differential control element, in which a first upper limit limiting function is multiplied by a second upper limit limiting function, the first upper limit limiting function being included in an output runaway prevention circuit of an integral control function provided in the integral control element and being defined according to an output signal of a load limiter.

An energy control system (ECS) for controlling an energy storage system (ESS's) that includes energy storage devices(s) or an energy storage combination (ESDC's) including≥1 of the energy storage devices and ≥1 of the energy storage combinations. A power conversion system is coupled to an output of the ESDC, and a transformer is coupled to an output of the power conversion system. The ECS includes an ECS server and an ESS adapter configured for providing an interface between ECS server and the ESS. The ECS server is configured for reading status data from the ESS and submitting schedules including selected charging and discharging times to the ESS, monitoring or displaying a variance between an expected performance of the ESS based on the schedules and an actual ESS performance, and responsive to the variance being determined to be above a predetermined threshold, sending an update of the schedules to the ESS.

A system for generating power is disclosed. The system comprises a first storage reservoir for a first liquid fluid and a second storage reservoir for a second higher density fluid located at a lower elevation. Power is generated using a pump, a generator, and fluid displacement.

Embodiments presented provide for a high efficiency electrical production system that utilizes a pump and windmill system to produce electrical energy through hydro power and wind action.

Disclosed techniques include energy management based on modularized energy control using pooling. Operating data is obtained from a plurality of energy modules within an energy storage system. The plurality of energy modules is pooled. One or more operating goals are obtained for the plurality of energy modules. The operating goals can be based on cost, availability, or energy module status. One or more processors are used to analyze the operating data, the one or more operating goals, energy demand, and energy module operating health. The operation of one or more of the plurality of energy modules is controlled based on the analysis. The energy modules can be a pooled homogeneous bank of energy modules. The homogeneous banks can be pooled into heterogeneous energy modules. The pools can include dynamically added energy module peers.

Embodiments presented provide for a high efficiency electrical production system that utilizes a pump and windmill system to produce electrical energy through hydro power and wind action.

A system for storing and generating power is disclosed. The system comprises a first storage reservoir configured to store a first fluid, a second storage reservoir located at a lower elevation than the first storage reservoir and configured to store a second fluid wherein said second fluid has a higher density than the first fluid, and a pump. The pump and the first and the second reservoir are operatively connected such that power is stored by displacing the second fluid in the second storage reservoir by pumping the first fluid from the first storage reservoir to the second storage reservoir and such that power is generated by allowing the pumped first fluid in the second storage reservoir to exit the second reservoir. The first fluid is generally a liquid. In some embodiments, a power recovery device may be employed. In some embodiments, the hydraulic pressure of the low density fluid may be employed to pressurized desalination feed and facilitate desalination.