基于反推方法的滑模自适应励磁控制

Sliding Mode Adaptive Excitation System Control Based on Back-Stepping Approach

针对电力系统参数摄动和外界干扰等因素对励磁系统的影响,经过对传统模型状态变量的变换,建立了励磁控制系统模型,设计了基于backstepping方法的模糊滑模励磁控制器。该方法通过逐步构造Lyapunov函数和设计切换函数,从而得到了最终的控制规律。最后对所设计的算法进行了仿真研究,与常规PID+PSS控制方法相比,系统在动静态响应性能上均优于PID+PSS控制。通过仿真表明这种控制方法不仅有效而且还能达到比较满意的控制效果。

For the impact on the excitation system of the power system parameter perturbation and external disturbance factors, the excitation control system model was established and fuzzy sliding mode excitation controller based on backstepping method was designed through the transformation of traditional state variable model The final control law was obtained with Lyapunov function and switching function. Finally, the designed algorithm was simulated, which was compared with conventional PID ＋ PSS control method, result shows that the this control method is not only effective but also satisfactory control effect.