A sea wave power plant for generating electricity, and for supplying high pressure fluids to a water purification system. The power plant includes two compartments adjustable differential hydro cylinders that are assembled on floaters, an axial piston variable motor, a system for protecting the floaters in periods of storm in a way that the floater are positioned horizontally outside the water, and an automation sub-system. The wave power plant is combined of several modular units that each one of them serves as independent sea water power plan.

A wave energy converter incorporates a floating body and a reaction body engaging the floating body wherein the reaction body is static or oscillating out of phase relative to the floating body. A power take-off (PTO) has at least one direct drive linear generator, a high level controller responsive to sensors engaged to the direct drive linear generator and providing a PTO force change command (dF.sub.PTO) and a low level controller receiving the PTO force change command and providing control signals to power electronics connected to the direct drive linear generator. The direct drive linear generator is operable responsive to the control signals to achieve optimal power extraction performance with high force at low speed with operation in two physical directions and operating as both a motor and a generator for a total of four quadrants of control.

A wave-activated power generation device is disclosed. The device includes a float configured to be capable of floating in the sea; a rotor configured to generate a rotational inertial mass effect; a power generator configured to generate power based on rotation of the rotor; a first elastic body; and a drive part configured to connect the rotor with the float via the first elastic body so as to rotate the rotor along with movement of the float.

An apparatus and method is disclosed for extracting energy from an oscillating working fluid, such as ocean waves. The apparatus (10) comprises an internal flow passage (40) for the working fluid, a turbine (44) and a flow control device (38), each of the turbine (44) and the flow control device (38) being in direct fluid communication with the flow passage (40), wherein in use the flow control device (38) is selectively moveable between a first configuration in which the flow control device (38) is open to allow a flow of the working fluid, such as air, to exit the flow passage (40) therethrough, and a second configuration in which the flow control device (38) restricts a flow of the working fluid therethrough. In such an instance, the working fluid then must enter the flow passage (40) via the turbine (44), which can be harnessed to generate electricity.

A wave energy converter (100) is provided which comprises a heaving buoy point absorber (122) having a surface piercing float (120) operably coupled to an adjustable reference mass (125) defining a volume for accommodating sea water therein. The surface piercing float and the adjustable reference mass are configured to move together in response to passing waves. A chamber (105) provided within the surface piercing float is in fluid communication with the sea for trapping a volume of air above an enclosed column of water. The height of the enclosed column of water varies as the point absorber reacts against its surface via an adjustable air-spring. A power take off (140) is configured for being driven by a stream of vented air in communication with the chamber as the heaving buoy point absorber reacts against a trapped volume of air. A control mechanism is configured for tuning one or more operating characteristics of the heaving buoy point absorber.

A wave energy converter is disclosed, comprising: a body configured to float in water and roll and/or pitch in response to wave action; a pendulum supported by the body and configured to swing in response to rolling and/or pitching of the body; an energy converting means associated with the pendulum and configured to convert swinging of the pendulum relative to the body into electrical energy; a pendulum adjusting means configured to adjust a swinging period of the pendulum, wherein the pendulum adjusting means includes one or more flywheels, each of the one or more flywheels being selectively operably connectable to the pendulum; a body tuning means configured to adjustably tune rolling characteristics of the body; and a controller configured to control the body tuning means such that a rolling period of the body approximates or matches a wave energy peak period.

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.

The present disclosure relates to a method of using a feedback loop from sensors to manipulate sea waves by applying concepts from optics interference and lensing. The method includes capturing, by one or more sensors, environmental data of an aquatic environment, wherein the environmental data relates to one or more of a wind speed, a wind direction, a wave pattern, a wave spectra, and a wave direction. The method includes analyzing, by one or more processors of a controller, the environmental data to identify a sensed environmental condition. Further, the method includes determining an optimal configuration of a wave interference device in the sensed environmental condition, wherein the controller is communicatively coupled to the wave interference device; and configuring the wave interference device to occupy the optimal configuration.

A method for harnessing wave energy includes providing a vehicle to a body of water, the vehicle. The method includes submerging the vehicle to a depth in the body of water. The method includes operating the motor-generator of the vehicle in the first quadrant of the motor-generator. The method includes detecting a phase of a wave in the body of water based information from the processor of the detected phase. The method includes orienting the vehicle to lag the phase of the wave based on the detected phase of the wave. The method includes synchronizing an inertial acceleration of the vehicle to movement of the wave. The method includes switching the motor-generator to the second quadrant for generation mode to convert energy from the movement of the wave to electrical energy. The method includes storing the energy from the wave in the rechargeable battery source.

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.