﻿ 低通滤波器LPF对谐波检测电路影响的研究

低通滤波器LPF对谐波检测电路影响的研究Research on the Impact of Low Pass Filter LPF on Harmonics Detection Circuit

Abstract: This paper has researched the harmonics current detection method based on instantaneous reactive power theory, and the impact which low pass filter has on harmonics current detecting has been simulated by MAT-LAB/ SIMULINK. The simulation results show that the dynamic response and the detection precision can be greatly influ-enced by the cut-off frequency, order and type of the low pass filter in the harmonics detection circuit. Thus this can provide guidance for the selection of LPF in harmonics detection circuit.

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