Frequency dependence of interfacial space charge formed in laminated dielectrics under AC voltage application conditions

Author

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

Author_Institution

CRIEPI, Tokyo, Japan

Volume

2

fYear

2000

fDate

15-18 Oct. 2000

Firstpage

796

Abstract

The frequency dependence of interfacial space charge was experimentally obtained for LDPE/EVA laminated dielectrics in the frequency range of dc to 50 Hz. It was found that there are high, low and intermediate transition frequency regions in this performance. Interfacial space charge might be governed in principle by the Maxwell-Wagner type polarization, but modified by a semi-blocking contact of the interface in the low frequency region, and by a limited number of carriers in the high frequency region. Increased voltage induces carriers in the interface to become less mobile or more trapped. Both phenomena occur in the transition region.

Keywords

carrier mobility; composite insulating materials; composite material interfaces; dielectric polarisation; laminates; polyethylene insulation; space charge; 0 to 50 Hz; 10 kV; AC voltage application conditions; LDPE/EVA laminated dielectrics; Maxwell-Wagner type polarization; frequency dependence; high frequency region; interface carrier mobility; interfacial space charge; intermediate transition frequency regions; laminated dielectrics; low frequency region; semi-blocking contact; Charge measurement; Current measurement; Dielectric measurements; Electric fields; Frequency dependence; Indium tin oxide; Polarization; Space charge; Space technology; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation and Dielectric Phenomena, 2000 Annual Report Conference on

Print_ISBN

0-7803-6413-9

Type

conf

DOI

10.1109/CEIDP.2000.884078

Filename

884078