风力发电系统最大风能追踪的非线性控制策略

Nonlinear Control Strategy for Wind Power System MPPT

为了最大化捕获风能和减小随机风引起的疲劳载荷,设计了基于耗散系统理论框架的L2范数优化鲁棒速度控制器,有效克服系统参数变化和风速波动的不确定性的影响,实现了风速跟踪控制。以1.5 MW直驱永磁风电机组作为研究对象,进行了仿真和实验研究,结果表明该控制策略可以实现快速风速跟踪,且对于风速波动等未知干扰具有较强的鲁棒性。

In order to achieve maximum power point tracking（MPPT） and reduce fatigue load caused by the random wind, this paper designs a L2 norm optimal robust speed controller based on dissipation system theory framework, which can effectively overcome variation of system parameters and uncertainty of wind speed fluctuation, and realize wind speed tracing control. Simulation and experimental research have been conducted on a 1.5MW direct-driven permanent-magnet wind turbine, and the results show that this control strategy can achieve rapid wind speed tracing, and has strong robustness for such unknown disturbances as wind speed fluctuation etc.