单周控制直流侧单相有源电力滤波器

One Cycle Controlled DC Side Single Phase Active Power Filter

提出了一种基于单周控制理论的直流侧有源电力滤波器 (DC侧APF)。该DC侧APF并联在整流桥的直流侧。文中提出的采用单周控制理论实现的DC侧APF不需要检测负载电流、不需要计算负载电流的谐波和无功分量、不需要乘法器 ,只需要检测整流桥直流侧的输出电流和APF的储能电容电压。具有主电路结构新颖、控制电路简单 ,补偿效果好等优点。

A DC side active power filter(APF)based on one cycle control theory is proposed.This DC side APF is shunted at the DC side of rectifier bridge.Compared with the traditional power factor corrector(PFC),the DC side APF only compensates the harmonic and reactive current drawn by nonlinear loads,so the DC side APF features low rate,small volume,high efficiency,and so on.In contrast to the traditional APF,there is no need to sense the load current,no need to calculate the harmonic and reactive component of the load current,and no need for the multiplier by using one cycle control method.Only the output current of rectifier bridge and the capacitor voltage of APF are needed to be sensed.The one cycle controlled DC side APF has the property of new main circuit structure,simple control circuit and good compensation.The proposed theory and circuit are verified by experimental results.