Experimental Study of Charge Neutralization at the Surface of Granular Layers of Insulating Materials
Experimental Study of Charge Neutralization at the Surface of Granular Layers of Insulating Materials
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DOI：
10.1109/tia.2013.2243393
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发表时间：
2013-03-01
影响因子：
4.4
通讯作者：
Nemamcha, Mohamed
中科院分区：
文献类型：
--
作者：
Kachi, Miloud;Dascalescu, Lucian;Nemamcha, Mohamed
残余电荷的中和通常是绝缘颗粒、薄膜或纺织介质最佳加工的先决条件。本文的目的是评估可能影响交流电晕放电消除聚乙烯颗粒材料表面电荷能力的因素。通过测量将样品暴露于双极离子流之前和之后的表面电势分布来评估中和的有效性。通过以各种高压（HV）水平（16、20和25kV）和频率（1、20、50、100、200和400Hz）对悬挂在设置在接地板表面的颗粒层上方30mm处的线型电晕电极通电来产生电晕放电。结果表明，提高高压频率可以提高中和效率。当电源频率为50Hz时，对于实际感兴趣的情况，可以通过实验确定最佳电压值。在相同情况下，连续暴露于交流电晕放电可以提高中和效率。
Neutralization of the residual electric charge is often a prerequisite for the optimal processing of insulating granules, thin films, or textile media. The aim of this paper is to evaluate the factors that might affect the ability of ac corona discharge to eliminate the charge at the surface of polyethylene granular materials. The effectiveness of the neutralization is evaluated from the measurement of surface potential distribution before and after exposing the samples to a flux of bipolar ions. The corona discharge was generated by energizing at various high-voltage (HV) levels (16, 20, and 25 kV) and frequencies (1, 20, 50, 100, 200, and 400 Hz) a wire-type corona electrode suspended at 30 mm above the granular layer disposed at the surface of a grounded plate. The results show that the neutralization efficiency can be improved by increasing the frequency of the HV. An optimal value voltage can be experimentally determined for the case of practical interest when the frequency of the power supply is 50 Hz. In the same case, successive exposures to the ac corona discharge may enhance the efficiency of the neutralization.