CURRENT HARMONICS GENERATED BY LAMPS: A COMPARISON IN DIFFERENT CONDITIONS OF SUPPLY VOLTAGE

Claudio Cicala, Luca Podestà

Abstract

In this paper an analysis of conducted harmonic emissions of different types of lamps is presented. The growing use of non-linear loads (pc, printers, electronic devices, etc.) connected to power supply systems and their variability with time, are responsible of a continuously changing harmonic content in the distribution system. Therefore, to analyze their real behaviour, the lamps were tested using the general power supply of an office building as the source voltage, so that the harmonic distortion of the test voltage changed depending on the time of day and on different weekdays. Accordingly, the resulting current waveforms of the lamps significantly changed. The mean values of harmonic distortion of currents were analyzed and the differences between the lamps are shown.

Keywords

discharge lamps, LED, THD

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IMEKO-WC-2009-TC4-601.pdf

DOI

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IMEKO TC

TC4 - Measurement of Electrical Quantities

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