Effects of Blade Pitch, Rotor Yaw, and Wind-Wave Misalignment on a Large Offshore Wind Turbine Dynamics in Western Gulf of Mexico Shallow Water in 100-Year Return Hurricane

摘要

To determine the optimal park configuration of a large offshore turbine in a hurricane, a study is conducted on effects of blade pitch and rotor yaw, and wind-wave misalignment, in a 100-year return hurricane on a 13.2-MW large offshore wind turbine (OWT) in western Gulf of Mexico (GOM) shallow water. The OWT structure considered includes a rotor with three 100-m long blades and a monotower support structure. Maximum loads on the wind turbine are determined with blade pitch and rotor yaw, with and without wind-wave misalignment in the 100-year return hurricane. The results show that effects of blade pitch and rotor yaw on turbine structural dynamics are significant, whereas the effect of wind-wave misalignment is small in the context of structural design in strength. The study provides deep insight to wind turbine dynamics and its structural design in the extreme hurricane.