Design of a New Floating Wind Turbine and Analysis of Current Load Effect

A semi-submersible platform of V-shaped base with NREL 5 MW wind turbine is designed. Hydrodynamic load, aerodynamic load and mooring system were coupled for calculation and analysis. Hydrodynamic load was based on potential flow theory, aerodynamic load was based on leaf element momentum theory, and mooring system was based on quasi-static method. By coupling program F2A, AQWA software and FAST software are linked to complete the time-domain fully coupled simulation of the platform under the combined action of wind, wave and current, and the dynamic response of the floating wind turbine under different current loads are calculated and analyzed. The results show that velocity and incidence angle of current load have great influence on motion response and mooring force of floating wind turbine.