The present invention provides an assembly platform of a large tidal current energy generating device. The assembly platform is internally provided with at least one horizontal axis hydro-generator. The assembly platform includes supports, at least four fixed piles, at least two sleeving members and at least two force-bearing supports. The fixed piles are connected through the supports to form an installation space. The hydro-generator is installed inside the installation space, one end of each fixed pile is driven to be fixed to a seabed and the other end extends to be above a water surface. Ends of the at least two force-bearing supports are respectively mounted on the left and right sides of the horizontal axis hydro-generator along the water flow direction and the other ends are respectively provided with corresponding sleeving members so as to resist an impact force of a water flow on the horizontal axis hydro-generator.

The system utilizes fluid pressure achieved by increasing depth as a primary component for generation of energy. The system operates by varying its depth through changes in buoyancy. The ballast changes are controlled by electronics powered by a battery charged by a generator driven by a hydraulic system. Rather than utilizing a motor driven pump to generate pressure in the hydraulic system, a piston-like cylinder is applied pressure by the change in hydrostatic pressure as depth increases and draws fluid back into the cylinder as pressure decreases. As the system sinks, outside pressure forces hydraulic fluid to power a generator that charges a battery and powers a pump to deballast. As the system rises, the lowering of ambient pressure, and other internal forces, causes the hydraulic fluid to return to its initial state, where once the ballast begins to take in fluid, the whole process will continue to repeat.

A turbine comprises a shaft (20), a mass (10) eccentrically mounted for rotation about shaft (20), having its center of gravity at a distance from the shaft (20) and a motion base (15). Motion base (15) rigidly supports the shaft (20), and is configured for moving the shaft (20) in any direction of at least two degrees of movement freedom, except for heave. A floating vessel-turbine (120), encloses entirely the eccentrically rotating mass (10) and the motion base (15). The turbine converts ocean wave energy into useful energy, very efficiently.

A system includes a float including a drivetrain, a reaction structure coupled to the drivetrain by a tendon, and an extension spring having a first end coupled to a fixed point on the tendon and a second end configured to be disposed at a fixed location relative to the drivetrain. The extension spring is configured to experience an elastic force in response to tension on the first end of the extension spring away from the drivetrain.

A system for generating energy from waves in a body of water includes a resilient fluid container that contains a fluid. When the fluid container is compressed and decompressed, the fluid flows out of and into the fluid container. A panel is configured to move relative to the fluid container as the waves act on the panel such that the panel acts on and compresses the fluid container. An energy generating device generates electrical energy as the fluid flows out of fluid container.

A water-driven turbine has an elongated endless conveyor with down and up streaming straightaways connected by travel-reversing turns. Paddles mounted on the conveyor present high resistance to waterflow on the downstream straightaway and low resistance to waterflow or the atmosphere on the upstream straightaway, the differential allowing the flow of water to continuously drive the conveyor which is connected to a power take-off shaft facilitating connection to a variety of energy-harnessing systems. The turbine can be towed, self-driven or mooring line manipulated to a flow site and is operable in unidirectional flows such as rivers and reversing flows such as tides at depths from surface to bottom. The paddles can be mounted or changed on shore, at the flow site and anywhere in between. The turbine is efficient in low and high velocity water flow, not easily damaged by floating debris, cavitation free and fish, mammal and environmentally friendly.

A control system for stabilizing a floating wind turbine is provided. The control system includes a measuring device configured for measuring a wind field and a wave field, a determining device wherein the determining device is configured for determining an excitation frequency spectrum of the floating wind turbine on the basis of the measured wind field and/or the wave field and/or a current floater pitch angle of the floating wind turbine, and wherein the determining device is further configured for determining a balanced state of the floating wind turbine, wherein in the balanced state a natural frequency is outside of the excitation frequency spectrum and/or the current floater pitch angle is equal to a pre-defined floater pitch angle. The control system further includes an adjustment device which is configured for manipulating the current floater pitch and/or the natural frequency until the balanced state is met.

An oscillating fluid energy capturing assembly, including at least one hinged propeller assembly, each hinged propellor assembly of the at least one hinged propeller assembly including a driveshaft including a first end and a second end, a first plurality of blades pivotably connected to the first end, and a second plurality of blades pivotably connected to the second end.

Systems and method for a hydrokinetic energy device. A hydrokinetic energy device includes a main body including two main wing-shaped spars mounted upon a rotating central hub, and rotatable spar tip turbines mounted at or near an end of each of the main wing-shaped spars, the main wing-shaped spars driving the rotatable spar tip turbines through water, each of the rotatable spar tip turbines including a direct-drive generator and power conversion system that transfers power from a rotating rotatable spar tip turbine to the central hub where the voltage is stepped up and amperage is reduced.

Disclosed is an apparatus that adapts the rate of its computational work to match the availability of energy harvested from a stochastic energy source; and, with respect to some types of energy harvesting, regulates the rate of energy capture, the rate of energy conversion, and the rate of consumption of stored potential energy, through its alteration, regulation, and/or adjustment, of that same computational work load.