A wave activated power generation device includes a cylindrical floating body anchored on water and extending vertically to a water surface, a ballast provided at a lower end portion of the floating body, and a power generating equipment provided at an upper end portion of the floating body. The floating body includes a buoyancy control chamber allowing the floating body to vertically float in the water and adjusting a position of the floating body relative to the water surface to a predetermined height in accordance with a relation between buoyancy of the floating body and weight of the ballast, and an air chamber formed between the buoyancy control chamber and the power generating equipment. The power generating equipment includes an air turbine provided above the air chamber and driven by air flow generated between an inside and outside of the air chamber by vertical motion of the water surface, and a generator rotationally driven by the air turbine. Furthermore, a wave activated power generation plant includes the coupled plural wave activated power generation devices upon request.

Wave activated power generation device and wave activated power generation plant

PURPOSE: A combined tidal and wave power generating system using a breakwater is provided to facilitate management of generating system by combining wind power, tidal power, and wave power generating units CONSTITUTION: A combined tidal and wave power generating system comprises a base(10), a breakwater(20), a wind power generating unit(30), and a combined tidal and wave power generating unit(40) The base is installed on the underwater bottom and supports an upper structure The breakwater is formed of concrete on the base to block waves from the open sea The wind power generating unit is installed on the top of the breakwater and generates power from the torque by the wind The combined tidal and wave power generating unit is installed inside the breakwater and rotates by tidal and wave forces according to seawater level The breakwater is settled on the base, including a bottom part to keep the structure stable

Apparatus for generating offshore wind power combined with tidal current power and wave force generation by utilizing a breakwater

The present invention relates to an apparatus for simulating power generation from a breakwater, by which a process of driving a turbine embedded in a breakwater by means of inflow and outflow of seawater due to tides can be confirmed The apparatus for simulating power generation from a breakwater according to the present invention comprise a water tank for storing water to be supplied; a simulated breakwater generation unit; a plurality of water supply pipes, a plurality of water discharge pipes, a plurality of bypass pipes, and a plurality of relief valves which are disposed between the water tank and the simulated breakwater generation unit; a pump configured to selectively supply or discharge water through the plurality of water supply pipes, the plurality of water discharge pipes, and the plurality of bypass pipes; and a central control unit configured to control operation states of the plurality of relief valves and the pump According to the present invention, a principle of power generation using seawater flowing into and out of a marine structure such as a seawater exchanging breakwater, etc can be confirmed

Simulation apparatus for electric generating by the water pathway of dual breakwaters

The invention discloses a buoyant swing type integrated power generation device based on a fixed type offshore wind turbine. The device comprises a pile foundation laid on seabed, and a hollow pile column installed on the pile foundation; a wind turbine tower is fixedly mounted on the top of the pile column through a flange plate; wind turbine blades are connected with a wind turbine generator through a speed increasing gearbox; the wind turbine generator side is connected with a controller in the tower through a cable; two or more buoyancy swing plates are hinged on the pile foundation aroundthe pile column; one hydraulic cylinder is arranged on each of two sides of each buoyancy swing plates; the bottoms of the hydraulic cylinders are hinged to the pile foundation; the piston rods of the hydraulic cylinders are fixedly connected with the side surfaces of the corresponding buoyant swing plates; and each buoyancy swing plate is also corresponding to a set of hydraulic system and a generator. The power generation device disclosed by the invention has the advantages of simple structure, high reliability, high adaptability to environmental loads, and convenient repair and maintenance.

Buoyant swing type integrated power generation device and power generation method based on fixed type offshore wind turbine

PROBLEM TO BE SOLVED: To improve power generation efficiency by equalizing intermittent wave power to be used for power generation, to reduce a construction cost compared with a conventional wave breaker type wave power generator, and to allow power generation using wind power and the wave power as natural energy by additionally providing a wind mill. SOLUTION: A plurality of water chambers 2, 2 are formed in a circumferential direction, in such a manner that a plurality of partition walls 3 stand to be circumferentially spaced from each other on a foundation mount 1 formed on the sea bottom B, and substrates 4 as closing walls stand at the rear of the water chambers to form openings 2A in front of the water chambers. Pendulum plates 11 are connected to and supported by a hydraulic pump 13 such as a swing type vane pump disposed on the partition walls, so that the pendulum plates are axially supported by the water chambers 2 to be capable of swinging. A generator 16 is driven by rotating a hydraulic motor 14 disposed in a machine room 4C of the base body 4 by working oil from the hydraulic pump 13. COPYRIGHT: (C)2004,JPO

Kondo Yoshiro

Papers

Pendulum type wave power generator