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Three-phase s Harmonic Detection by DSP Based on Instantaneous Reactive Current Theory

Gui Hong-yun

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Abstract

The existing harmonic detection methods are reviewed and the characteristics of theirs are compared firstly. A new method based on the instantaneous reactive power current is analyzed in detail and design of digital filter in this method is debated. The affection of the variety of filters, sampling frequency and cut-off frequency is discussed. The results of simulation and experiment verify the harmonic detection method based on instantaneous reactive current theory.

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What this paper is about

The existing harmonic detection methods are reviewed and the characteristics of theirs are compared firstly. A new method based on the instantaneous reactive power current is analyzed in detail and design of digital filter in this method is debated. The affection of the variety of filters, sampling frequency and cut-off frequency is discussed. The results of simulation and experiment verify the harmonic detection method based on instantaneous reactive current theory.

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Available abstract

The existing harmonic detection methods are reviewed and the characteristics of theirs are compared firstly. A new method based on the instantaneous reactive power current is analyzed in detail and design of digital filter in this method is debated. The affection of the variety of filters, sampling frequency and cut-off frequency is discussed. The results of simulation and experiment verify the harmonic detection method based on instantaneous reactive current theory.

Key concepts: Harmonic, Digital signal processing, Electronic engineering, AC power, Current (fluid), Sampling (signal processing), Computer science, Harmonic analysis

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