A very large floating structure based on modular units and a combined mooring system. The system includes a central large platform module, small outer platform modules, tension-legs, mooring lines, oscillating float-type wave energy converters and module connectors. The oscillating float-type wave energy converters can convert the swinging motion of the floaters into the horizontal motion of the piston rods through the gear wheel-rack transmission. Module connectors between modules are divided into two kinds of modes. One can utilize both relative torsional motion and horizontal motion between the central large platform module and the adjacent small platform modules, while the other simultaneously generates power and reduces the relative motions between the adjacent platform modules. The wave energy converters on the outer modules of the very large floating structure can generate power by absorbing the incident wave energy.

An energy storage and regeneration system that converts irregular, non-constant, and variable input power to regular, constant, and controlled output power using hydraulics whereby the irregular input power is used to pump hydraulic fluid into an accumulator array where it is stored pressurized. Energy is released in a controlled fashion using a hydraulic motor operated by the pressurized hydraulic fluid from the accumulator array, in accordance with the specified power demand. One or more power units may be deployed depending on the amount of energy required at the output. Each power unit includes a hydraulic motor and associated floating accumulator whose internal pressure is controlled to maintain a substantially constant pressure differential across its associated motor. The system can be integrated into various energy system sources including renewable energy such as wind, PV or thermal solar, wave, tidal, etc.

A structure of buoyancy power generation includes a buoyancy assembly, at least one rail adapted to allow the buoyancy assembly to be in slidable connection with it, at least one fixing element configured on the rail, an air supply device in connection with one side of the buoyancy assembly and a wave power generation assembly configured on one side of the buoyancy assembly. With the above structure, a user may install the buoyancy assembly and rail in a pool, and air is put into the buoyancy assembly through the air supply device, allowing the buoyancy assembly to generate buoyancy and float upward along the rail to the water surface, thereby generating waves on the water surface, and the wave power generation assembly is configure on the shore of the pool, capable of converting the waves generated on the water surface to electric power.

This disclosure provides improved nautical craft that can travel and navigate on their own. A hybrid vessel is described that converts wave motion to locomotive thrust by mechanical means, and also converts wave motion to electrical power for storage in a battery. The electrical power can then be tapped to provide locomotive power during periods where wave motion is inadequate and during deployment. The electrical power can also be tapped to even out the undulating thrust that is created when locomotion of the vessel is powered by wave motion alone.

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 wave energy conversion system. The system has a float and a power generation drum with a drum housing rotationally attached to the float by a shaft attachment. The shaft attachment allows an at least partially rotational movement of the drum housing and the float relative to each other. The drum housing holds a cable reel with a cable having a first end part connected to the cable reel and a second end part, where the cable reel is an integral part of or connected to the drum housing to rotate with the drum housing. The power generation drum may comprise an electrical generator arranged within the drum housing for rotating or turning in response to a rotational movement of the drum housing. The float can be positioned in the sea by having a second end part of the cable attached to a submerged structure or to the sea bed. When the float is positioned in the sea, the float may be moved by the waves, which movement may cause a rotational movement of the drum housing with electric power being generated by the electrical generator.

Disclosed is a wave energy power generation apparatus, comprising a plurality of wave energy collecting units. Each of the wave collecting units comprises: a potential energy collecting assembly used for collecting wave potential energy, a kinetic energy collecting assembly used for collecting wave kinetic energy and a positioning assembly used for vertically limiting and horizontally positioning buoyancy compartments. The apparatus is beneficial for improving the collection efficiency of wave energy, and simultaneously can satisfy the purposes of long-term safe and stable operation, of being adapted for scaled construction.

The invention relates to an offshore floater system for a wave electricity generator (OFS) comprising one or more lever arms coupled with one or more floaters, wherein the lever arms can be rotatably coupled with a base floater and the system can be configured to follow contours of waves and to be able to change an effective length of the lever arm according to wave parameters. The floaters can be differently sized, can have defined forms. The OFS can be installed off shore, anchored to be able to react on a water level change, mounted to react on a wave direction. The lever arms can be coupled with an electric energy generator which can be homopolar and coupled with a defined electrocomponent. The lever arms can be coupled with a defined mechanocomponent. An offshore floater method for generating wave electricity is proposed based upon the proposed system.

A hinge system and method for an Articulated Wave Energy Conversion System (AWECS) that provides for hinge and piston pump displacements due to multi-axis forces in allowing adjacent barges of the AWECS to pivot with respect to one another due to wave motion. The hinge system uses a plurality of parallel hinges, and axle segments, coupled between adjacent barges wherein the hinges are coupled to upright trusses positioned transversely along facing edges of each barge. Hinge bracing includes lower V-shaped struts that act as lower stops when the barges pitch up and also include upper struts that act as upper stops when the barges pitch down. The pumps are positioned in parallel. The pumps have special couplings such as ball joint couplings that permit motions other than longitudinal pump/ram motions due to multi-axis forces generated by the wave motion and thus provide omni-directional stress relief to the pumps.

A wave energy capturing device arranged to capture and convert wave energy to useful energy when positioned in an operating mode. The device includes a pivot point and a buoyant wave energy absorber affixed to the pivot point. The device has an operating mode where the device is arranged to capture wave energy. In the operating mode the pivot point is supported above the surface of a body of water and is held substantially stationary relative to wave movement. The buoyant absorber is engaged with the surface of the body of water at an operating location positioned downwave of the pivot point and wherein the absorber is arranged to rotate about the pivot point. The rotation defining a rotation arc of the absorber along which the absorber is arranged to reciprocate in the operating mode. The disclosure aims to provide improved capture of wave energy for conversion to useful energy.