Time-domain coupling analysis of semi-submersible floating foundation with four buoys for offshore wind turbine and its mooring system

Abstract

Taking OC4 semi-submersible floating foundation design of offshore wind turbine as the research object, the mooring system of OC4 semi-submersible floating foundation with four buoys is designed according to its structural parameters. The calculation model is established by AQWA software to analyze the time domain coupling analysis results of the floating foundation and its mooring system under the action of wind, wave, and current to determine its mooring system. The results show that for the four buoy semi-submersible floating foundation, the catenary mooring system has more advantages in the positioning and motion control of the floating fan.