A SHORT DISCUSSION ABOUT IMPACT OF TIME WINDOW SYNCHRONIZATION ERROR ON ACCURACY OF HARMONIC SUBGROUPS MEASUREMENT – EXPERIMENTAL RESEARCH

Tomasz Tarasiuk, Andrzej Pilat

Abstract

The paper is focused on the problem of insufficient synchronization of measurement time window with actual duration of integer number of cycles of input signal and its impact on accuracy of harmonic subgroups measurement. It is analyzed in the wake of chief provisions of IEC Standard 61000-4-7. Particularly, the harmonics order, their phases and the synchronization accuracy have been considered. Numerous simulations has been carried out and their results are graphically presented. The results have been confirmed by experimental research of chosen testing signals, generated by arbitrary waveform generator.

Keywords

harmonic subgroups, fast Fourier transform, IEC Standard 61000-4-7

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IMEKO-WC-2015-TC4-154.pdf

DOI

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IMEKO TC

TC4 - Measurement of Electrical Quantities

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