DocumentCode :
1470926
Title :
Sinusoidal and Triangular High-Voltage Neutralizers for Accelerated Discharge of Nonwoven Fibrous Dielectrics
Author :
Antoniu, Angela ; Smaili, Atallah ; Vacar, Ionut-Vasile ; Plopeanu, Marius-Cristian ; Dascalescu, Lucian
Author_Institution :
EHD Group, Univ. of Poitiers, Angouleme, France
Volume :
48
Issue :
3
fYear :
2012
Firstpage :
857
Lastpage :
863
Abstract :
Electric charge accumulation on fibrous dielectric media during manufacturing processes can easily attain high levels of electrostatic hazard. In a previous paper, the authors addressed the problem of the accelerated discharge of such materials using a commercial ion generator. The aim of this paper is to evaluate the various factors that influence the efficiency of charge neutralization performed using a wire-type corona electrode energized from either a sinusoidal or a triangular ac high-voltage supply. The experiments were performed on 400-μm-thick nonwoven sheets of polypropylene and polyester, in ambient air. The samples were charged for 10 s using a triode-type corona electrode system of negative polarity. The surface potential on the charged medium, which was in contact with the grounded electrode, was then measured with an electrostatic voltmeter. After 10 min, the medium was moved beneath a neutralizing electrode, connected to a high-voltage amplifier. The efficiency of the neutralization was quantified by the ratio between the surface potential after and prior to the charged sample exposure to ac corona discharge. The experimental design methodology was employed for evaluating the effects of two factors, namely, amplitude (range: 16-24 kV) and frequency (range: 20-400 Hz), of the neutralizing voltage. The potential at the surface of the nonwoven fabrics after neutralization was found to vary insignificantly with thermal conditioning and signal waveform but was significantly lower for higher frequencies and amplitudes.
Keywords :
corona; dielectric materials; electrodes; electrostatic discharge; surface potential; triodes; voltmeters; ac corona discharge; accelerated discharge; charge neutralization; commercial ion generator; electric charge accumulation; electrostatic hazard; electrostatic voltmeter; frequency 20 Hz to 400 Hz; high-voltage amplifier; nonwoven fibrous dielectrics; nonwoven sheets; polyester; polypropylene; sinusoidal ac high-voltage supply; sinusoidal high-voltage neutralizers; size 400 mum; surface potential; thermal conditioning; triangular ac high-voltage supply; triangular high-voltage neutralizers; triode-type corona electrode; voltage 16 kV to 24 kV; wire-type corona electrode; Corona; Electric potential; Electrodes; Media; Positron emission tomography; Surface treatment; Corona; dielectric materials; electrostatic measurements; electrostatic processes; surface charge;
fLanguage :
English
Journal_Title :
Industry Applications, IEEE Transactions on
Publisher :
ieee
ISSN :
0093-9994
Type :
jour
DOI :
10.1109/TIA.2012.2191168
Filename :
6170600
Link To Document :
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