双桥逆变的单周控制有源滤波器

单周控制(one cycle control)有源滤波器因无需参考信号、动态跟踪性好、控制简便等特点而被广泛研究。经典的单周控制有源滤波器由于控制策略上的不足,存在电流直流分量问题和局部稳定问题,影响了其实用化进程。本文针对上述问题提出一种新型的拓扑,并在经典控制电路的基础上再添加一个电源电压过零检测,无需再添加任何复杂的控制,就能很好地同时解决上述问题。从而使单周控制的有源滤波器在保持原有一切优点的基础上,能够更加稳定有效地工作。仿真的结果证实了所述控制策略的可行性。

Double Bridge Invert One-Cycle Control Active Power Filter

Being with some features: no any requirement on reference signal,good dynamic tracking performance,easy to control etc,the one cycle control active power filter(APF) is widely studied.As there are some problems in the control policy of classic one cycle control APF,such as DC component of AC current and local stability,so its practical course is affected.In order to solve the problems mentioned above,a novel topology is proposed in this paper,it would be solved well with adding only a source voltage zero detecting into the classic control circuit without any other complex control.Consequently,the one cycle control APF can operate more stably and efficiently holding all its previous advantages.The feasibility of the proposed method is already proved by the simulation results.