方波有源滤波器谐波电流检测的一种新方法

A New Method of Harmonic Current Detecting for Square-wave Active Power Filter Systems

针对一种用于大功率系统的小容量有源滤波器——方波有源滤波器,基于瞬时无功功率理论,提出一种对指定谐波次数的谐波电流的检测方法。理论分析和仿真结果证实了文中所提方法的正确性。

This paper presents a new method of harmonic current detecting at selected frequencies,which is based on the theory of instantaneous reactive power.It is used for a hybrid parallel active power filter with small-rated square-wave inverters,intended for high power applications.The proposed method is validated by theoretical analysis and simulation results.