Patent ID: 6884020

Claim:
Turbine driven by flowing water to generate electricity, comprising number of shaped foils ( 5 ) of a suitable length, width and thickness, each foil ( 5 ) being attached with the upper part of its shaft ( 6 ) to a rotating, discoid, supporting structure ( 3 ) which is connected to the main shaft ( 2 ) of the turbine, and the longitudinal shaft ( 6 ) of each said foil ( 5 ) being mainly parallel with the main shaft ( 2 ), wherein each foil ( 5 ) is equipped with a separate step motor ( 8 ) and a respective first encoder ( 16 ); and the main shaft ( 2 ) is equipped with a second encoder ( 18 ) and circuit breaker ( 19 ); an external measuring device ( 22 ) for measuring the speed of the water ( 11 ); and a computer ( 23 ) comprising a particular computer programme, to obtain that the signals from said encoders ( 16 , 18 ) and said measuring device ( 22 ) being processed in said computer ( 23 ), to achieve by assistance of said step motors ( 8 ) that the angle of a main surface of each foil ( 5 ) be individually regulated into a desired direction of attack relative to the flowing direction of said flowing water( 11 ).