STATCOM无源性控制器的设计研究

Design of Passive Controller for STATCOM

为了提高静止同步补偿器(static synchronous compensator,STATCOM)的控制性能,采用无源性理论,应用双闭环控制策略设计其控制器。首先建立基于dq坐标系下STATCOM暂态数学模型的Euler-Lagrange模型,外环应用PI控制器,内环采用能量成型的方法,设计无源控制器,实现交流侧电流的快速跟踪和直流侧电压稳定,并且达到无功功率控制的目的。最后建立基于Maltlab的仿真模型进行仿真分析,结果表明所设计的控制器具有较强的动态响应性能和良好的暂态控制性能。

In order to improve the control performance of STATCOM, the paper adopt the passivity theory and de- signed the controller by using the dual closed loop control strategy. Firstly, an Euler-Lagrange（EL） model of the mathe- matical model for STATCOM in dq synchronous reference frame is established. With this model, PI controller is used in the outer circle and in the inner circle the passivie controller is designed by using energy-shaping method. This controller can realize the fast tracking of the current on the AC side and the voltage stability of the DC side, and achieve the purpose of the reactive power control. Finally established of simulation model for simulation based on Maltlab analysis. The simula- tion results showed that the controller designed has a strong dynamic response and good transient control performance.