【摘要】 针对永磁直驱式同步风力发电机系统部分负荷阶段的最大功率捕捉问题,提出了一种滑模自寻最优控制策略。在风力机和永磁同步风力发电机非线性数学模型基础上,利用滑模变结构自寻最优控制算法实现风力发电系统最大功率捕捉,同时用自适应参数改善滑模变结构控制带来的输出颤振。该方法具有无须测量环境风速和精确风力发电系统数学模型的优点。仿真证明该方法具有良好的控制效果。更多还原

【Abstract】 A sliding mode optimum seeking control strategy on the maximum power point capture of direct-driven permanent magnet synchronous generator system for wind turbine is presented in the paper.Based on the nonlinear mathematical model of wind turbine and permanent magnet synchronous generator,a sliding mode variable structure optimum seeking algorithm is designed to track the maximum power point of wind power system,at the same time the chatter of sliding mode control is reduced by using adaptive parameters.The method has the advantages which need not measure wind speed and depend on precise mathematical model of wind power generating system.Simulation results confirm the validity of this method.更多还原