Comparison of Dynamic Response Between Stationary and Floating Wind Turbines

Considering wave loads, the dynamic responses of stationary and floating wind turbine platforms and relevant flexible components were studied by taking the measured data of NREL as the source of turbulent wind field and the NREL 5 MW wind turbine as a prototype. Results show that the movements of above platforms are mainly in surge, pitch and yaw directions; the in-plane moment and out-of-plane force at blade root of floating wind turbines are bigger than that of stationary wind turbines; for floating wind turbines, the shear force in surge direction of tower top and tower base and the pitching moment of tower base are three times as much as that of stationary wind turbines; the acceleration at tower top of floating wind turbines presents the characteristics of high frequency and large span.