A plurality of energy-generator pods, and methods of use, are provided along a rotatable tubular string extending downhole from surface into a wellbore. In embodiments, rotation of the tubular acts as a rotor of the pod and an outer component about the tubular, capable of relative rotation thereabout, forms the stator. The pod can also be equipped with bi-directional wireless electronic data communication including communication uphole to surface from sensors downhole, pod-to-pod, and down-hole communication to downhole tools. Pods can be fit to centralizers already employed for rotary tubular strings, the centralizer portion engaging the wellbore and remaining stationary relative to the rotating centralized tubular.

Techniques regarding material flow regulation and power generation are provided herein. For example, one or more embodiments described herein can regard a device or system for regulating material flow and power generation. The system can comprise a processor that executes computer executable components stored in a memory. The system can also comprise a coupling component which can secure the system to a pipe. The system can further comprise a power generation component that can generate power from material flowing through the pipe and a power output component which can output power generated by the power generation component.

A secondary electric power system and method of operation are disclosed. The system contains a grid having an array of turbines by which pressurized fluid is used to generate electricity to power a residential, commercial, agricultural or industrial structure. The secondary system may be a backup power source to the structure when a primary source is temporarily unavailable or may be a primary source in some circumstances. The method pumps fluid from a first pressure to a second pressure and exposes the fluid to a grid of turbine driven generators, the pressure is reduced across the grid to a third pressure that is less than the second. Additionally embodiments of the system are integrated into and incorporate components of other building utilities, e.g. water, sewer and fire control.

The hydraulic generator includes a first structure; a second structure, such that a water passageway from the inflow port to the outflow port is formed by the first structure and the second structure in a state that the second structure is attached to the first structure; a water turbine; and an electrical generator. The second structure is removable from the first structure, and includes a fixing portion fixing the fixed shaft.

An electrical energy generating device (1) to transform kinetic energy of fluid passing through a pipe into electrical energy, the device may include a flow management unit (2) having a first housing (20) enclosing a plurality of tubes and a first gasket (27); a generating unit (3) having a second housing (30) with a plurality of coils (37) embedded within the second housing (30), a rotor rotatable within the second housing (30); and a connector (4) connecting the flow management unit (2) to the generating unit (3).

A flush valve has a valve body having a flushing tube, a power generating set, and a solenoid valve assembly. The power generating set is disposed within the flushing tube and has a turbine capable of rotating, an induction coil, and a magnet inserted through the induction coil and capable of simultaneously rotating with the water turbine. The solenoid valve assembly has an assembling mount, a solenoid valve assembled to the assembling mount, and a power supply electrically connected to both the induction coil and the solenoid valve. A first reserving space is formed between the assembling mount and a relief assembly. A second reserving space is formed between the solenoid valve and the assembling mount and communicates with the first reserving space. The solenoid valve optionally prevents the first reserving space and the second reserving space from communicating with each other.

A hydropower generator includes: a driving shaft installed along a path through which a fluid flows; a plurality of blade assemblies installed along a lengthwise direction of the driving shaft; a spinning supporter connected to rotatably support the driving shaft; a power generator receiving a spinning force of the driving shaft and generating electricity; and a flow pipeline internally provided with the driving shaft along a lengthwise direction thereof and formed with a channel through which a fluid flows.

Proposed is a power supply device for a submodule controller of a modular multilevel converter (MMC) connected to a high voltage direct current (HVDC) system, which generates and supplies power through by hydraulic turbine generation using coolant flowing through a heat sink that cools a submodule. The power supply device includes a heat sink disposed inside the submodule of the MMC converter to cool the submodule using coolant; a pipe having an inlet configured to supply the coolant to the heat sink and an outlet configured to discharge the coolant to outside of the heat sink and configured to form a flow path to cause the coolant supplied through the inlet to flow to the heat sink; and a hydraulic turbine generator disposed at one side of the pipe to generate power by the coolant flowing through the pipe and supply the power to the submodule controller.

Scalable Fluid Generator Array to utilize an adaptable grid of generators that are controlled by the end user's fluid demand, or available fluid supply, such that flow of fluid through every generator is always near optimum and working with maximum power conversion efficiency. The Fluid Generator Array is scalable to match the end user's power requirements.

An electric power information acquisition unit is provided for acquiring power supply-and-demand information including electric power acceptable to an electric power system or information correlated with the electric power. A fluid information acquisition unit is provided for acquiring fluid information including information correlated with a physical quantity of a fluid flowing out of a channel. A controller is provided for controlling at least one of the physical quantity, the channel or electric power generated or electric power to be generated by a generator by using the fluid information so that the physical quantity becomes equal to a desired value, while controlling electric power to be supplied to the electric power system to the electric power acceptable to the electric power system or less, by using the power supply-and-demand information.