作　　者： ; ; ; ; ; ;

机构地区： 广东工业大学

出　　处： 《微特电机》 2010年第11期58-61,共4页

摘　　要： 针对变速恒频风力发电系统结构复杂,受参数变化和外部干扰较显著,具有非线性、时变、强耦合的特点,在分析变桨距风力发电机组的动态模型基础上,提出一种基于自抗扰控制器(ADRC)的控制方法。低于额定风速时,跟踪给定转速,实现最大风能捕获;高于额定风速时,控制桨距角,限制风能吸收,保持风机转速和功率值在额定值附近。基于Matlab/Simulink环境,在全风况下对系统进行了仿真,结果表明,ADRC控制策略受系统参数变化的影响较小,动态性能好,鲁棒性较强。 The variable speed constant frequency wind turbine is a very complex,strong coupling,time-varying and highly nonlinear system.The performance of wind turbines was easily affected by parameter changes and external disturbances.By building the dynamic model of the variable-pitch wind power system,a new controller based on active disturbance rejection control（ADRC） theory was proposed.When the wind speed was lower than the rated value,the given rotating speed was traced to realize the maximum power point tracking of wind energy.When the wind speed was higher,the output power and rotating speed was kept within the scope of the rated value by adjusting pitch angle and limiting wind power capturing.The simulation of the system was made in a full wind speed range in Matlab/Simulink environment.The results show that the ADRC strategy produces a good dynamic performance and robustness ever when the system parameter changes.

关 键 词： 风力机 变速恒频 最大风能捕获 变桨距 自抗扰控制

领　　域： [电气工程]