Abstract
The bottom standing type of pendulor wave power system developed at Muroran Institute of Technology in 1979 had been revealed to be one of the most promising wave energy converter. And it had the function of breakwater too. But in case the system is installed at greater water depth, considering the horizontal wave force against them, it requires large caisson structures. Therefore, the uplifting type which has vacant space below the chamber may not require as heavy as the bottom standing type and the construction cost of the uplifting type is cheaper than of the bottom standing type. This experimental study has been conducted to make sure the function of breakwater and to get primary conversion efficiency. As a result of this study, reflection coefficient has been decreased with motion of the pendulum. And the uplifting type's conversion efficiency is as good as the bottom standing type's for the case of d/h≥0.5.
