10MW海上浮式风机伺服控制系统设计及耦合动力特性研究OACSTPCD

The braceless semi-submersible platform for the NREL 5 MW wind turbine is upscaled to support the DTU 10 MW wind turbine in this study.The servo control system of 10 MW semi-submersible wind turbine is redesigned,in which,the torque control is used to achieve maximum power capture below the rated wind speed,and the gain scheduling proportional integral(GSPI)control method is used to realize the design of variable propeller control system above the rated wind speed,so as to ensure the safe operation of the floating wind turbine above the rated wind speed.Based on above designed servo control system of the DTU 10 MW wind turbine,the coupled dynamic characteristics of 10 MW semi-submersible wind turbine under the action of constant and turbulent wind are analyzed by using the full coupling model of"Aerodynamics-hydrodynamics-control-elasticity"for verifying the reliability of the designed control system.The results show that,under the action of servo control system,the motion response of 10 MW floating offshore wind turbine is controlled effectively,the turbulent wind has obvious excitation effect on the surge and pitch of the turbine,and the heave motion is excited by both wind loads and wave loads.