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|Title:||EXCESSIVE NEUTRAL CURRENTS IN THREE-PHASE FLUORESCENT LIGHTING CIRCUITS.|
|Source:||Liew, A.C. (1987). EXCESSIVE NEUTRAL CURRENTS IN THREE-PHASE FLUORESCENT LIGHTING CIRCUITS.. Conference Record - IAS Annual Meeting (IEEE Industry Applications Society) : 1364-1371. ScholarBank@NUS Repository.|
|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 neutral currents are accounted for by three main components; fundamental third-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 to overcome the problem are outlined, including a scheme that cancels third-harmonic currents along a common neutral conductor in the form of a six-phase system supplied by two transformers connected in antiphase.|
|Source Title:||Conference Record - IAS Annual Meeting (IEEE Industry Applications Society)|
|Appears in Collections:||Staff Publications|
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