An ocean wave energy converter (WEC) using one or more elongated light-weight low-cost surface floats, oriented and self-orienting parallel to oncoming wave fronts are mechanically linked to a motion stabilized or fixed frame or base through one or more power take-offs in such manner that multi-directional rotational and translational wave-induced forces and relative motion between the float(s) and base are efficiently captured. Some embodiments have at least one forward positioned float that moves upward and rearward on wave crests and downward and forward on ensuing wave troughs to capture a majority of both heave and surge wave energy components. Other embodiments also provide apparatus and means to totally submerge the floats during severe seas or adjust submerged depth and float mass to optimize performance.

A device and method for generating electric energy/power from a wave motion. The device comprises an input branch connected to a movable element, a secondary branch connected to a main electric generator, a power split transmission comprising a first mechanical port connected to the input branch, and a second mechanical port connected to a secondary branch, and a third port being a mechanical or electrical control port. The device further comprises a variable speed auxiliary electrical machine connected to the control port for mechanically or electrically controlling power distribution in the power split transmission. The device further comprises a control unit adapted for controlling the variable speed auxiliary electrical machine in such a way as to realize a one-way rotation of the main electric generator.

Disclosed is a wave amplification power-generating boat, comprising float systems (1), a support system (2), a hydraulic turbine power-generating system (3) or a float power-generating system (7) or a canard-type power-generating system (8), a wind rudder system (4), a propeller (5), a mooring system (6) and a wave detector system (9). The float systems (1) are capable of moving on a support; the support system (2) is used to connect the float systems (1) at two ends, with the hydraulic turbine power-generating system (3) or the float power-generating system (7) or the canard-type power-generating system (8) installed in the middle, and installing the wind rudder system (4), the propeller (5), the mooring system (6), and the wave detector system (9); the hydraulic turbine power-generating system (3), etc., works and generates power by utilizing amplified waves in the middle of a boat; and the wave detector system (9) is used to detect and compute an average wave length, to adjust in a timely manner a distance between floating points (101) at two ends to be as close to the wave length as possible, and adjust the direction of the boat to be consistent with that of the wave. The wave amplification power-generating boat enables a high wave energy conversion efficiency, and has a very strong ability to wind and waves.

Provided is an electric power generation system with which, when converting energy of a flowing fluid, an electric power generation mechanism is located at a site different from a site that receives the energy of the flowing fluid, with energy transfer system by outer and inner cable.

The present invention is directed to a wave activated power generation system that converts the vertical movement of one or more power generation buoys resulting from interaction with waves into energy producing gyrations via a rack and pinion mechanism. The square-shaped power generation buoys are manufactured from fiber-reinforced plastic material.

A wave energy absorption device comprises a buoy adapted to move with movements of water, and a buoy oscillation device attached to the buoy, the buoy oscillation device comprising an elongated means and a rotary means adapted to interact with the elongated means. A hydraulic pump with variable displacement is connected to the rotary means and connectable to a hydraulic circuit. When the buoy moves with movements of water, relative movement is created between the elongated means and the rotary means, whereby the hydraulic pump transforms kinetic energy into hydraulic energy which to the hydraulic hose, and whereby a torque is applied to the rotary means by the hydraulic pump to dampen or amplify the movements of the buoy. The buoy oscillation device provides individual control of the force applied to the buoy by change of displacement in the hydraulic pump.

A gear arrangement for transforming a linear force and/or motion into a rotational torque and/or motion and vice versa. The arrangement comprises; a rack (10, 110, 210, 510, 1010, 2010, 3010,4010) exhibiting a longitudinal axis (A) and at least one toothed side extending parallel to the longitudinal axis of the rack, the rack being reciprocally movable along its longitudinal axis. At least two pinions (20, 120, 220, 520, 1020, 2020, 3020, 4020, 5020) are arranged such that each pinion is rotationally meshing with a toothed side of the rack. Each pinion is fixed to a respective first primary gear (30, 130, 230, 530, 1030,2030, 3030, 4030, 5030) arranged at a first axial side of the pinion. At least two first primary gears are mechanically connected to a common out- or input shaft (60, 160, 560, 1060), such that the at least two first primary gears transmit torque to or from the first out- or input shaft. At least one pinion is fixed to the respective first primary gear by means of an elastically deformable fixation device (40, 41, 42, 140, 1042, 1400, 2400, 3400, 4400, 5400) which is arranged to allow a limited relative rotation between the respective first primary gear and pinion.

A device and method for generating electric energy/power from a wave motion. The device comprises an input branch connected to a movable element, a secondary branch connected to a main electric generator, a power split transmission comprising a first mechanical port connected to the input branch, and a second mechanical port connected to a secondary branch, and a third port being a mechanical or electrical control port. The device further comprises a variable speed auxiliary electrical machine connected to the control port for mechanically or electrically controlling power distribution in the power split transmission. The device further comprises a control unit adapted for controlling the variable speed auxiliary electrical machine in such a way as to realize a one-way rotation of the main electric generator.

A wave barrier or wave terminator type ocean wave energy converter (WEC) utilizing one or multiple adjacent floats together forming an elongated wave front parallel (EWFP) float rotatably connected by at least one swing or drive arm to a secondary floating or shore or seabed fixed body or frame, such that the at least one swing arm is rotating about a submerged pivot point or axle on such body or frame and constraining the motion of the float(s) relative to the body or frame when wave forces are applied against the float(s). Relative to the direction of oncoming wave fronts and relative to the still water line (SWL), the at least one EWFP float is substantially forward of, and above, the pivot point such that the float concurrently moves both upward and rearward on wave crests and returns both forward and downward on ensuing wave troughs. The rear surface of the EWFP float is substantially arcuate and concave with a radius approximating its distance from the pivot point such that the float produces minimal energy consuming back waves when it is being moved by oncoming wave forces. The lower rear arcuate surface of the float can extend below the bottom of the float deeper into the water column to capture additional wave energy.

A rapidly deployable, ecological, floating, electrical generation device which uses a buoyancy-controlled piston including a rack and pinion system to drive a rotating shaft which is coupled to a floating power generation system. As the floating power generation system rises and falls with the motion of ocean waves, the buoyancy-controlled piston maintains its position in the water. As the relative positions between the floating power station and the buoyancy-controlled piston change, the rack and pinion system drives the rotating shaft. A series of gears increases the rotational speed to spin a shaft and flywheel at moderate speed. Another set of gears are then used to increase rotational speed and drive the shaft of a dynamo which produces electrical current by spinning an electromagnet with a coil. The result is environmentally sourced electrical energy that can be used, stored and/or transmitted in any conventional fashion.