链式静止同步补偿器自适应反步控制器

针对链式静止同步补偿器(STATCOM)系统非线性特性,提出一种链式STATCOM自适应反步控制器。该控制器采用反步法的递归思想获得链式STATCOM的虚拟控制输入,并根据确定性等价原理设计系统的中间控制率,利用该中间控制率完成电压控制器设计。通过中间控制率和实际控制率的偏差量构造系统的李雅普诺夫方程,利用李雅普诺夫的渐近稳定性原理,获得能够保证链式STATCOM系统稳定的控制输入和系统参数的自适应率。实验结果进一步验证了所设计自适应反步控制器的正确性和有效性。

Adaptive Backstepping Controller of Cascaded Static Synchronous Compensator

Adaptive backstepping controller of cascaded static synchronous compensator (STATCOM) was proposed in this paper considering the nonlinear characteristic of cascaded STATCOM system. The controller obtained virtual control input of cascaded STATCOM by adopting the recursive idea of backstepping. It designed the system interim control rate according to the principle of certainty equivalence principle. Using the above system interim control rate, the design of voltage controller was completed and the Lyapunov equation of cascaded STATCOM system was set up. Using the Lyapunov asymptotic stability principle, the control inputs and adaptive rate of system parameters to ensure the stability of cascaded STATCOM were obtained. The correctness and effectiveness of adaptive backstepping controller was validated through experiments.