A measuring device for wave energy conversion performance of a comb-typed permeable breakwater with arcuate walls is provided. The measuring device includes four parts: the comb-type permeable breakwater with arcuate walls, a wave height measuring instrument and pressure sensor fixing and adjusting apparatus, a wave height measuring instrument data collecting and processing apparatus and a pressure sensor data collecting and processing apparatus. The comb-typed permeable breakwater includes combined arc-shaped caissons, partition plates, a back plate, a fixing bottom plate and fixing screws. The wave height measuring instrument data collecting and processing apparatus processes data collected by a wave height measuring instrument and outputs for display. The pressure sensor data collecting and processing apparatus analyzes data collected by a pressure sensor and outputs for display. The measuring device has a stable structure, convenient operation and high experimental accuracy.

A hydraulic power generating system includes a hydraulic motor, a bidirectional generator connected to the hydraulic motor, a hydraulic cylinder, first and second tubes, a piston structure having a piston and first and second links, and a power driving device connected to the first link. The piston divides the hydraulic cylinder into first and second chambers. The first and second links are connected to the piston and disposed through the first and second chambers, respectively. The first tube is communicated with the first chamber and the hydraulic motor. The second tube is communicated with the second chamber and the hydraulic motor. When the power driving device drives the piston toward the first chamber, hydraulic oil is pumped to the hydraulic motor for rotating the bidirectional generator. When the power driving device drives the piston toward the second chamber, the hydraulic oil is pumped to rotate the bidirectional generator reversely.

The present disclosure provides a renewable energy generator including a housing formed to float in a body of water, a main generator unit, frame(s) fixed internally of the housing at intervals, a main rotating shaft for linking the main generator unit rotatably to the frame(s), and a controller for operating the pendulum by driving the main motor, and controlling the main generator unit to cause the housing to behave due to the pendulum operation. The main generator unit includes an inner housing, a pendulum moving inside the inner housing, a pendulum rotation shaft vertically connected to the pendulum and fixed to the inner housing, a main motor for converting kinetic energy of the pendulum into electrical energy, and a gear unit linked to the pendulum rotation shaft and transmitting the kinetic energy of the pendulum to the main motor.

Disclosed are a wave power generation system for generating electrical energy by means of a hydraulic circuit, and a method for controlling same. The wave power generation system comprises a hydraulic motor for storing motion energy in a form of fluid pressure and volume if a plurality of tension transmission members, for transmitting motion energy by means of six-degrees-of-freedom motion of a movable object floating on the waves, move in one direction, and for maintaining the tension of the tension transmission members by means of the stored energy if the tension transmission members move in the other direction. Electric energy is alternately generated by means of the bidirectional motion of the plurality of tension transmission members.

Disclosed are a wave power generation system for generating electrical energy by means of a hydraulic circuit, and a method for controlling same. The wave power generation system comprises a hydraulic motor for storing motion energy in a form of fluid pressure and volume if a plurality of tension transmission members, for transmitting motion energy by means of six-degrees-of-freedom motion of a movable object floating on the waves, move in one direction, and for maintaining the tension of the tension transmission members by means of the stored energy if the tension transmission members move in the other direction. Electric energy is alternately generated by means of the bidirectional motion of the plurality of tension transmission members.

This invention relates to a wave energy recovery apparatus with a power-take-off arrangement comprising at least a base, a reciprocating panel, two power-take-off (PTO) units with one or more generators to convert kinetic energy of waves or tidal currents to electricity, at least two gear transmissions operatively connected between the panel and the generators and at least two one-way clutch mechanisms to control the directions of rotation of the generators. The panel is arranged to rotate a half of the generators when rotating into one direction and another half of the generators when rotating into the opposite direction.

The invention relates to a device that uses wave energy to convert it into electrical energy via hydraulic energy. This device is installed on marine structures with vertical walls and comprises: a free floating elementing element that exploits the vertical sea level variation due to the swell, guided by a triple rail lateral movement channeling system installed on vertical walls; a support connecting the floating elementing element to a hydraulic system of cylinders allows the conversion of mechanical energy into hydraulic energy in both directions of movement, up and down; an energy amplification system to optimize the efficiency of the device; a hydraulic power plant; pressure accumulators; an oil tank and a hydro-electric turbine that allow the conversion of hydraulic energy into electric energy.

A wave energy converting device has a driving unit, a gearing unit, an operating unit, a transmission unit and an energy converting device. The fluctuation potential generated by the ocean waves drives the floating member of the driving unit to move up and down, and then the fluctuation potential energy is converted into a rotational kinetic energy through the gearing unit, the operating unit and the transmission unit, which is then used for power generation and the unit is driven to change between the first and second operating gear with the increase and decrease of the potential energy of the waves, so that the transmitting shaft can generate energy through the rotation of the first transmitting gear and the second transmitting gear.

The device for conversion of wave energy into electrical energy consists of a supporting structure, the first working body, an anchor and anchor cables. The supporting structure is connected to the anchors by anchor cables, while the first working body is slidably connected to the supporting structure. The motion transformation system is firmly connected to the supporting structure and comprises rigid gears toothed with gears with rolls on one side while on the other side they are hinged to the first working body, on the other side of the gears with the rolls, rigid gears are connected at one end, while their other end is hinged to other working body. The gears with rolls are connected by shafts with a multiplier that drives the generator that further produces electricity. The device constructed in this way has the possibility of transport to the place of exploitation, because it floats stably on its own. The anchor system is transported to the place of exploitation using a transport body that also has the ability to float on its own and to submerge.

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.