THE FIELD TEST OF THE FLOAT-COUNTERWEIGHT TYPE WAVE POWER GENARATION SYSTEM ON MARUSHIMA FISHERY PORT IN MINAMATA CITY

Abstract

  The wave power generation system which consists of wire(s), float(s), counterweight(s), driving pulley and ratchet mechanism is set on a Curtain-Wall-Type Breakwater at Shiranui Bay in the Yatsushiro Sea. The device can take advantage of the existing onshore or offshore structures reducing the installation cost significantly. Next, since all the mechanical and electrical components except the float and the counterweight are set well above the water level, supervision and maintenance are convenient.
  In this paper, several examinations for setting the device are introduced. Firstly, the energy gain, the maximum wire tension on the float side, and the maximum torque that the driving pulley receives from the generator in anticlockwise direction are evaluated from the mechanical dynamics model for stable operation of the device. After satisfactory completion of the setup, the device is brought into operation. This paper presents the sea trial results of the electrical power output.