一种用于农网电力有源滤波器谐波检测的方法

为了实现对农村电网谐波的实时和准确补偿,提出了一种用于单相有源电力滤波器可检测任意指定次谐波的新方法.该检测方法基于锁相回路和一种简单的自适应算法对指定次谐波信号幅值和相位进行在线估测,并通过闭环自适应调整参数以提高检测精度.同时,对该方法进行了频域分析,并通过仿真验证了该方法的正确性和灵活性.

A Novel Detecting Method for Harmonic-compensation Active Power Filter Using in Rural Power System

This paper proposes a new selective harmonic detecting method for selective harmonic compensation active power filter to provide precise compensations using in rural power system. The detecting method based on the concept of a phase-locked loop and a simple adaptive algorithm is used to estimate the magnitude and phase of the selective harmonic signal online, and obtain more precise results by adjust parameter in close loop. Approximate analyses are presented for the scheme, and simulations are given which demonstrate the validity of the analytical results and the ability of the detecting method to detect any selective harmonic precisely.