基于互补策略的新型单周控制有源滤波器

介绍了单周控制有源滤波器的原理，针对经典单周控制有源滤波器存在的诸如电流直流分量问题、局部稳定问题等，提出了单周控制有源滤波器的互补控制策略、电流直流分量负反馈策略和两路信号差值积分负反馈策略。新控制策略的采用彻底克服了经典单周控制有源滤波器的电流直流分量问题，实现了单周控制有源滤波器的全局稳定，并消除了电流交越失真，使得具有诸如无须参考信号、检测量少、控制简便、波形质量高、动态跟踪性能好、抗干扰能力强等显著优点的单周控制有源滤波技术达到实用化程度。实验结果证实了所述控制策略的有效性。

A NOVEL ONE-CYCLE CONTROL ACTIVE POWER FILTER BASED ON COMPLEMENTARY CONTROL STRATEIGIES

The principle of a one-cycle control active power filter is described in this paper. In order to solve the problems such as DC component of AC current and local stability, new control strategies including complementary strategy, negative feedback of DC component of AC current, negative feedback of the difference integration of two duty ratios are proposed. With new control strategies, the problem of the DC component of classic one-cycle control active power filter is solved completely, the global stability is realized, and the current distortion is eliminated. The novel one-cycle control active power filter is characterized by being needless of reference signal, few parameters to be measured, simplicity in control, high quality in waveform, good performance in dynamic tracking ability, high anti-interference ability, etc. Experiment results prove the practicality and validity of the proposed strategies.