基于流体脉动理论的漂浮式风力机平台纵摇运动控制策略

摘要

在流体脉动理论作用下,对张力腿式漂浮式风力机平台的纵摇运动进行分析,提出一种通过给变桨动作施加主动阻尼的控制策略,设计在不影响电功率输出的情况下的反馈控制系统,利用FAST软件对NREL提供的5 MW张力腿式漂浮式风力机进行建模,并与MATLAB/Simulink软件进行联合仿真.仿真结果表明,在流体脉动理论下设计的反馈控制系统不仅能降低塔顶的纵摇位移、叶轮转速和电功率输出波动,也能在一定程度上降低塔基处的纵摇力矩,对延长塔筒的寿命起到一定的作用.%The pitching motion of floating wind turbine platform with tension-leg is analyzed based on the fluid-impulse theory, and a feedback control strategy is proposed to apply the active damping to the pitch motion.The feedback control system is designed in the case of the electrical output is not affected.The 5 MW wind turbine with tension-leg platform provided by NREL was modeled using FAST software and is co-simulated with MATLAB/Simulink software.The simulation results show that the designed feedback control system can not only reduce the fore-aft displacement of the tower top, the fluctuation of the rotor speed and the electrical power output, but also reduce the tower base rolling moment to a certain extent by using the FAST and MATLAB/Simulink software and is helpful to improve the life of the tower.