单相有源电力滤波器的单周控制策略综述

A Survey on One-Cycle Control Strategy for Single-Phase Active Power Filter

针对基于单周控制的有源电力滤波器存在的直流分量问题,介绍了单周控制及其各种改进方法,说明了引入纹波法、双环控制、双向互补策略、单极调制和双边积分控制在单相有源电力滤波器中的应用情况,并根据级数收敛判据对上述单周控制策略的稳定性进行分析比较。分析结果表明,在相同的电路参数下,双向互补策略的稳定性最好,引入纹波法次之,且双向互补策略可以实现全局稳定。

In the light of the DC components existing in active filters（APFs） based on one-cycle control（OCC）, the OCC and its various improvement approaches are presented. The situation of applying following approaches, such as inducting current ripple, dual-loop control, double direction complementary control strategy, unipolar modulation and bilateral integration control, in single-phase APFs are illustrated. According to the criterion of series convergence, the stability of above-mentioned OCC approaches is analyzed and compared. The analysis results show that under same circuit parameters double direction complementary control strategy is most stable, the method of inducting current ripple takes second place, besides, by means of double direction complementary control strategy the global stability can be realized.