Wave Current Plant and Method Thereof

Water current power plant according to one or more of the preceding claims, characterised in that said universal coupling (50) is made up of a gear box comprising at least two planetary gears (42), with respective shafts (40) of the universal coupling being connected to the shafts of the planetary wheel (46) of the planetary gears, and that between the ring wheel (48) of the planetary gears a first conical cogged wheel (56) is placed which, via a shaft (54) is connected to the generator (60) and a second conical cogged wheel (58), which is connected to a servomotor via a shaft (52).

Water current power plant according to one or more of the preceding claims, characterised in that the universal coupling (50) and the generator (60) are kept in a watertight housing (26).

Water current power plant according to one or more of the preceding claims, characterised in that the wings (12) are formed in an at least partial arched aeroplane wing shape.

Method for operation of a water current power plant (10) to be placed under water, comprising several sails or wings (12) that are fastened to a rotary endless chain (14) running between opposite facing, respective turning discs (24) with the endless chain (14) being driven round by thrust from the wings (12) under the influence of the surrounding water, and to generate electrical energy with the help of, at least, one generator (60) that is connected to the endless chain (14), characterised by

• to fasten the turning discs (24) in pairs in respective frames (16, 18) that can be anchored and to let the endless chain (14) run freely between the frames (16, 18) and round between the turning discs (24), and
• to connect a universal coupling (50) to, at least, one of the pairs of turning discs (24) where the universal coupling controls the common movement of the cables (20) of the endless chain (14) when the generator (60) is running, and controls the differential movement of the cables (20) independently of said common movement, for regulation of the angle of the wings (12) between the cables (20), by adjustment of the speed of the cables (20) in relation to each other.