双模结构重复控制器在单相并联有源滤波器中的应用

A Hybrid Current Regulation Scheme for Single-phase Active Power Filters Based on Dual-mode Structure Repetitive Control

针对单相并联有源滤波器,提出一种数字式复合电流控制方案。该复合控制方案结合无差拍控制器和双模结构重复控制器,以实现对低次谐波的高效补偿,同时还具有优异的动态性能。区别于传统有源滤波器的控制方案,该复合控制方案不仅能够消除电网中的奇次谐波,而且还能消除单相系统在特定情况下产生的偶次谐波。详细研究复合控制的设计方法、稳定性以及鲁棒性。在单相有源滤波器系统对所提方案进行验证,实验结果证明了该方案的有效性。

This paper presented an all-digital hybrid current regulation scheme for single-phase shunt active power filter （APF）. The proposed hybrid current control scheme integrates the deadbeat control and dual-mode structure repetitive control （DMRC）, in such a way that it can offer high-performance compensating ability for the low order harmonics. Meanwhile, the dynamic performance of the proposed hybrid current controller is superior. Different from conventional schemes, the proposed scheme can compensate not only the dominant odd harmonics, but also the even harmonics in a single-phase system. The detailed design criteria, stability and robustness analysis of the proposed controller were presented in this paper. Several experimental results have been given to verify the validity.