The power generation from tidal currents by darrieus turbine

This paper reports the method of electric power generation from tidal currents and test results of the system which is specially designed for this purpose. The system consists of a vertical axis turbine, a gear box, an electric generator, and a control unit. The turbine is the vertical axis Darrieus rotor, and has three blades. Authors have studied on power generation from the tidal currents without blocking at bay or strait. Also the real test in tidal currents was conducted from 1983 to 1988, at Kurushima straits in Ehime prefecture, and its results are discussed.