基于自抗扰控制策略的直接转矩风力发电系统研究

针对直接转矩控制的永磁直驱风力发电系统中系统未能较好地跟踪最大功率点的问题,提出将自抗扰控制策略加入风力发电系统机侧控制结构中以提高系统性能。基于风力机和永磁同步风力发电机数学模型,结合自抗扰控制的基本模型构建发电机自抗扰速度环,最后以Matlab/Simulink软件对所提控制策略进行仿真分析,对比传统PI控制直接转矩风电系统,自抗扰控制策略的引入可提升系统整体的抗干扰能力和跟踪性能。

In response to the problem of the system failing to track the maximum power point effectively in the permanent magnet direct drive wind power generation system with direct torque control,an active disturbance rejection control strategy is proposed to be added to the turbine side control structure of the wind power generation system to improve system performance.Based on the mathematical model of wind turbines and permanent magnet synchronous wind turbines,combined with the basic model of active disturbance rejection control(ADRC),a generator active disturbance rejection speed loop is constructed.Finally,the proposed control strategy was simulated and analyzed using software Matlab/Simulink.Compared with the traditional PI control direct torque wind power system,the introduction of auto disturbance rejection control strategy improves the overall anti-interference ability and tracking performance of the system.