Corona-Charging and Charge-Decay Characteristics of Nonwoven Filter Media

Tabti, Belaïd; Mékidèche, Mohamed Rachid; Plopeanu, M.; Dumitran, Laurentiu Marius; Herous, Lazhar; Dăscălescu, Lucian

doi:10.1109/tia.2010.2041090

Cited by 58 publications

(13 citation statements)

References 14 publications

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“…However, the fibrous electrets loose their charge over a period of time; as a result, there is an observed deterioration in filtration performance of electret air filters [1,2]. This has driven the electret research towards understanding the nature, mechanism, and characteristics of charge decay in fibrous electrets.…”

Section: Introductionmentioning

confidence: 99%

Spatial charge distribution in fibrous dielectrics

Thakur

Das

et al. 2015

Journal of Electrostatics

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Section: Introductionmentioning

confidence: 99%

Spatial charge distribution in fibrous dielectrics

Thakur

Das

et al. 2015

Journal of Electrostatics

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“…C ORONA discharge is commonly employed in various electrostatic processes: metal insulation separation [1]- [3], precipitation of dust [4]- [7], and charging of electrets for air filters [8]- [11]. A lot of work has already been done to characterize the various types of corona electrodes and to compute the electric field strength, as well as the ionic charge density that they generate [12]- [19].…”

Section: Introductionmentioning

confidence: 99%

“…Sophisticated numerical models have been developed for calculating the electric field and the space charge generated by the wire-to-plane electrode configuration. The triode electrode system is much less investigated, although it is frequently employed for accurately controlling the corona charging of insulating materials [8]- [11]. It consists of a high-voltage corona electrode, a grounded plate electrode, and a grid electrode between them.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Characterization of Corona Discharge Generated by a Triode Electrode System

Bouteffaha

Bendaoud

Tilmatine

et al. 2015

IEEE Trans. on Ind. Applicat.

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The triode electrode system is frequently employed for accurately controlling the corona charging of insulating materials. The primarily aim of this paper is to characterize this electrode system by current-voltage and current density distribution measurements. The electrostatic aspect of the electric field generated by the triode electrode system is also numerically analyzed using a charge simulation program. The ionizing element of the electrode system is a thin tungsten wire (diameter: 200 μm) attached to a cylinder (diameter: 26 mm) and distanced at 34 mm from its axis. The wire-cylinder assembly is a "dual" electrode, facing a grid electrode, connected to a well-defined potential, and grounded plate electrode (aluminum, 250 mm × 130 mm). The interelectrode spacing has a very significant influence on the current-voltage characteristics of the triode system and on the extension of the corona discharge generated by it. The experimental results obtained for different geometries of the electrode system are interpreted in the light of the numerical modeling of the electric field, in order to make some recommendations regarding its design: reduce/increase the wire-grid distance in order to diminish the operating high voltage/expend the surface affected by the corona discharge. Index Terms-Corona, current density, current-voltage characteristics, electric field, electrostatic processes.Ahmed Bouteffaha (M'12) was born in Tighennif, Algeria, in 1961. He received the Engineering degree in electrical engineering from the University of Sciences and Technology, Oran, Algeria, in 1989 and the Magister (Dr.Eng.) degree from the Department of Electrical Engineering, University of Mascara, Mascara, Algeria, in 2010. Part of his Ph.D. dissertation was prepared at the University Institute of Technology, Angoulême, France.Since 2010, he has been teaching electric machine courses at the Department of Electrical Engineering, University of Mascara. He is a member of the Application of Plasma, Electrostatics and Electromagnetic Compatibility (APELEC) Laboratory. He has published several scientific papers in conference proceedings. His current research interests include electrostatic separation technologies, high-voltage insulation and gas discharges, and electromagnetic fields.Abdelber Bendaoud (M'08-SM'09) received the Engineering degree in electrical engineering from the University of Sciences and Technology, Oran, Algeria, in 1982 and the M.S. and Doctorate degrees from the Institute of Electrical Engineering, University of Sidi Bel Abbes, Sidi Bel Abbes,

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“…Several ionising electrodes' shapes and types; including needles, wires or blades, were proposed and presented in literature. Significant efforts and research, pioneered by the contributions of Dascalescu and his colleagues [4][5][6][7][8][9][10][11][12][13][14], have been carried out to characterise the various types of electrodes and to compute their corona onset voltage V o , electric field strength E, as well as the generated ionic current density J.…”

Section: Introductionmentioning

confidence: 99%

“…1 (with the wire W 2 removed). The geometrical parameters of the dual wire-cylinder electrode as well as the applied voltage are known to, largely, influence the separator's operation [4,5]. However, because of the very limited space of the separator, little control is possible over these geometrical parameters (h 1 , h 2 and D) and consequently over the corona onset voltage, ground-level current density and other associated characteristics of the separator.…”

Section: Introductionmentioning

confidence: 99%

Modelling of corona discharge of a tri‐electrode system for electrostatic separation processes

Abouelsaad

2014

IET Science, Measurement & Technology

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The study presents a detailed experimental and numerical analysis of the corona characteristics of a proposed 'trielectrode system' for electrostatic separation applications. The system consists of an ionising wire, a movable auxiliary wire and a non-ionising cylinder, having the same voltage and placed parallel above a grounded plate. A computational technique coupling the method of characteristics and the charge simulation method is developed to model the corona governing equations of the proposed configuration. Influence of the auxiliary wire's position on field modulation of the ionising wire, corona onset and switching on/off of the discharge is established both numerically and experimentally. Dependence of the spatial distributions of the electric field and current density on the system's geometrical characteristics is evaluated and assessed. The study includes a physical model of the corona discharge of this particular electrode arrangement and demonstrates the configuration's specific features and advantages as compared with the earlier designs. The computed results compared favourably well with experiments.

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Corona-Charging and Charge-Decay Characteristics of Nonwoven Filter Media

Cited by 58 publications

References 14 publications

Spatial charge distribution in fibrous dielectrics

Spatial charge distribution in fibrous dielectrics

Experimental and Numerical Characterization of Corona Discharge Generated by a Triode Electrode System

Modelling of corona discharge of a tri‐electrode system for electrostatic separation processes

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