2011•Electrical Measurement & InstrumentationRequires access

The Study of Single Order Harmonic Compensation Strategy of Active Power Filter

Zhuxing Shao

Abstract

In this paper,a new harmonic detection method based on the specified band-pass filter is presented.The whole method is based on instantaneous power theory.On the basis of established active power filter topological structure in paper proposed and its mathematical model in the grid,this article studies on single frequency harmonics and inter-harmonics compensation method.The approach is novel,clear physical meaning and any harmonic can be compensated by it,and it is convenient for circuit parameters design.Aiming at the negative sequence APF harmonic a kind of 8 order IIR digital filter is designed out,and the filter is simulated,and then a kind of digital filter scheme is put out.The simulation results of APF confirm the validity of this method.

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Key concepts: Harmonics, Active filter, Harmonic, Compensation (psychology), Infinite impulse response, Control theory (sociology), Electronic engineering, Filter (signal processing)