基于自寻最优控制算法的可调谐滤波器控制器

Adjustable Reactor Controller Based on Self-optimizing Control

相比有源滤波器,无源滤波器具有投资少、效率高、结构简单、运行可靠及维护方便等优点,但其受系统和本身参数变化影响大的缺点在很大程度上限制了它的应用。研究了一种用可控电抗器代替固定参数电抗器的无源滤波器,比较了2种可行控制算法的优缺点,通过改进,实现了一种基于自寻最优的控制算法。实验室和实际现场实验证明,这种算法能够使滤波器保持在谐振点附近工作,改善了滤波效果,具有一定的实用价值。

Compared with the active filters, passive filters are widely used for their lower cost, higher efficiency, simpler structure, more reliable performance and more convenient maintenance. Conventional passive filters with fixed capacitors and reactors can not remain good filtering performance when system frequency shifts or components parameters change. A passive filter with adjustable reactor is presented, advantages and disadvantages of the 2 feasible control methods are compared. The improved one implements a control method based on self- optimizing control. Experiments in laboratory and in practice show that the filter has good performances and is practicable.