自适应逆推励磁控制器设计

发电机的阻尼系数通常难以准确测量,使得电力系统是一个典型的参数不确定非线性系统.通过对含励磁控制的单机无穷大电力系统的精确反馈线性化,利用逆推控制与自适应机制相结合设计了逆推自适应励磁控制器.其所含的自适应增益控制可以对未知参数进行实时的估计,该控制器能使参数不确定的电力系统保持在Lyapunov意义下的渐近稳定.仿真结果表明,该控制器能有效地稳定电力系统,维持机端电压.

Design for Adaptive Backstepping Excitation Controller

It is difficult to measure the damping coefficients of generators accurately, so a power system is a typical nonlinear system of uncertain parameters. The model of a single machine infinite system with an excitation controller is changed to a linear system form based on exact feedback linearization method. Then based on the methods of backstepping control and adaptive gain control, an adaptive backstepping excitation controller is designed. The real-time measurement of the uncertain parameters can be implemented by an adaptive gain controller, and the system of uncertain parameter will be guaranteed to be asymptotically stable by the adaptive backstepping controller. The simulations show that the proposed controller can stabilize the power system and maintain generator voltage effectively.