静止同步补偿器精确反馈线性化滑模控制研究

Research on Exact Feedback Linearization Slide Mode Control of the Static Synchronous Compensator

静止同步补偿器(Static Synchronous Compensator,STATCOM)的传统滑模控制方法结合了其他的线性控制方法,使得控制参数调节麻烦,不能达到滑模控制的良好效果,针对该问题提出了STATCOM输入状态精确反馈线性化的滑模控制策略,通过计算得到合适的输出函数,将原非线性模型全部转化为Brunovsky标准型,然后对Brunovsky标准型设计了滑模控制的滑模面和控制律并转化到原系统中,采用Lyapunov函数检验了系统的稳定性。最后,仿真验证了该控制器改进了传统滑模控制结合线性控制的缺陷,对系统变化的反应更灵敏。

Traditional sliding mode control method of STATCOM （Static Synchronous Compensator, STATCOM） combining other linear control methods puts the adjustment of control parameter in trouble and does not achieve good results of the sliding mode control. In order to solve this problem, a new sliding mode control strategy of exact feedback linearization in STATCOM input state is presented. By calculation, a proper output function is obtained. All the original non-linear models are transformed into Brunovsky standard functions. And Brunovsky standard functions are used to design a sliding mode surface ＆ a control law which are transformed into the original system. Its stability is examined by Lyapunov function. Finally, the simulation results show that the proposed controller overcomes the inherent drawback of traditional control combining linear control and responds to the changes of power system more sensitively.