Carrier jumping over a potential barrier at the interface of LDPE laminated dielectrics

Author

Tanaka, T. ; Ito, T. ; Tanaka, Y. ; Takada, T.

Author_Institution

Central Res. Inst. of Electr. Power Ind., Tokyo, Japan

fYear

2000

fDate

2000

Firstpage

40

Lastpage

43

Abstract

Space charge is formed in an interfacial region of LDPE laminated EVA dielectrics, when they are subjected to dc voltage. A modified Maxwell-Wagner model is proposed to analyze such an interfacial space charge distribution. Ionic charge might be predominant rather than electronic charge. Positive charge is more predominant than negative charge in this dielectric system. Ionic charge carriers in EVA jump over a potential barrier to form a charge distribution at the dielectric interface. It is confirmed that its peak penetrates into LDPE, and it may be drawn via the electric force

Keywords

polyethylene insulation; polymer blends; space charge; EVA; LDPE laminated dielectrics; carrier jumping; interfacial region; interfacial space charge distribution; modified Maxwell-Wagner model; potential barrier; space charge; Cable insulation; Charge carriers; Charge measurement; Conductivity; Counting circuits; Current measurement; Dielectric measurements; Dielectrics and electrical insulation; Space charge; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation, 2000. Conference Record of the 2000 IEEE International Symposium on

Conference_Location

Anaheim, CA

ISSN

1089-084X

Print_ISBN

0-7803-5931-3

Type

conf

DOI

10.1109/ELINSL.2000.845416

Filename

845416