【摘要】 以大功率风力发电机组为研究对象,采用线性叶素动量理论将叶片拍打方向的相对风速变化转换为叶片所受的力和力矩(叶根拍打方向和挥舞方向的力矩)的变化。通过Coleman变换进行转换,建立系统状态空间方程。对其进行独立变桨控制设计理论研究,采用MATLAB/SIMULINK实现控制器的编程,分析结果与统一变桨比较表明:独立变桨距控制比统一变桨距控制具有更好的减载效果,更适合大型风力发电机组。通过独立变桨,可以降低风力发电机的载荷,减少维护费用,延长风机的使用寿命。更多还原

【Abstract】 A thorough study on large-scale wind turbine is presented,and the force and torque(flap wise and edge wise)are derived from wind inflow velocity based on BEM theory.Through the Coleman transformation,a system state space equation is established.Based on the equation,the theory research on individual pitch control is studied and programmed in MATLAB/SIMULINK.The theory research and engineering application show the superiority of individual pitch control design on load reduction,which is more suitable for the control of large-scale wind turbine.Individual pitch control can reduce the load that is happened in the operation process,so as to extend system service life and decrease maintenance.更多还原