Abstract
In the previous paper, the authors proposed a new type of wave and wind energy hybrid conversion system. The hybrid conversion system is composed of a single type or double type wave energy conversion system and a windmill. The two types of wave energy conversion systems are composed of a rectangular solid floating body and one or two ball screw type wave energy conversion cylinders hung from the floating body. The windmill is installed on the floating body. In the previous paper, the output characteristics of the single type wave energy conversion system were discussed numerically and experimentally. In this paper, the output characteristics of a protot39e of the double type wave energy conversion system were calculated and compared with those of the single type system. A small-scale experimental model was made and tank tests were carried out using a wave tank. The experimental results were compared with the calculated ones.