Please use this identifier to cite or link to this item: https://doi.org/10.1109/28.31260
Title: Excessive neutral currents in three-phase fluorescent lighting circuits
Authors: Liew, Ah-Choy 
Issue Date: Jul-1989
Source: Liew, Ah-Choy (1989-07). Excessive neutral currents in three-phase fluorescent lighting circuits. IEEE Transactions on Industry Applications 25 (4) : 776-782. ScholarBank@NUS Repository. https://doi.org/10.1109/28.31260
Abstract: Causes for excessive neutral currents amounting to 75% and 157% of phase current values in two installations supplying predominantly fluorescent lighting circuits have been identified. These high neutral currents are accounted for by three main components, viz., fundamental phase current unbalance, third-harmonic currents caused by saturation of ballasts, and more third-harmonic current caused by third-harmonic voltage waveform distortion in the supply. Solutions are presented to overcome the problem, including a scheme that cancels third-harmonic currents along a common neutral conductor by means of a six-phase system supplied by two transformers connected in antiphase.
Source Title: IEEE Transactions on Industry Applications
URI: http://scholarbank.nus.edu.sg/handle/10635/62166
ISSN: 00939994
DOI: 10.1109/28.31260
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