In this paper, the methods of harmonic suppression and reactive power compensation are firstly introduced, and then the status of APF technology and the application of APF are analyzed.

• 介绍了谐波抑制和无功补偿的方法，以及无源滤波器和有源滤波器的工作原理，全面分析了各种有源滤波器的结构特点与应用，提出了优选方案。