Study on Tidal Energy Conversion System with Bi-directional Impulse Turbine

(Effect of Hub-to-tip Ratio)

Abstract

In order to obtain the high output at the periodical bi-directional flow similar to tidal flow, the experimental research for tidal energy conversion system with impulse turbine was carried out. The unique tidal energy converter having the collector to increase the input and output power was adopted. Its outline shape was selected from the result of previous research. To improve the output power of tidal energy converter, three kinds of turbine rotors with different hub-to-tip size, i.e. 0.7, 0.6 and 0.5, were tested. As a result, the effect of hub-to-tip ratio of turbine rotor on tidal energy conversion system was clarified in this research.