Space Charge Behavior in Ethylene Propylene Rubber Under a 50-Hz AC Electric Field

Chang Dai; Yi Yin; Guiyue Zhou; Linxin Miao; Jiandong Wu

doi:10.1109/ACCESS.2019.2955167

IEEE Access (Jan 2019)

Space Charge Behavior in Ethylene Propylene Rubber Under a 50-Hz AC Electric Field

Chang Dai,
Yi Yin,
Guiyue Zhou,
Linxin Miao,
Jiandong Wu

Affiliations

Chang Dai: ORCiD; Department of Electrical Engineering, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai, China
Yi Yin: ORCiD; Department of Electrical Engineering, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai, China
Guiyue Zhou: ORCiD; Department of Electrical Engineering, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai, China
Linxin Miao: ORCiD; Department of Electrical Engineering, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai, China
Jiandong Wu: ORCiD; Key Laboratory of Engineering Dielectrics and Its Application, Ministry of Education, Harbin University of Science and Technology, Harbin, China

DOI: https://doi.org/10.1109/ACCESS.2019.2955167
Journal volume & issue: Vol. 7
pp. 171995 – 172003

Abstract

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In this study, the space charge behavior in ethylene propylene rubber (EPR) under a 50-Hz AC field is studied based on the variation of space charge response, FTIR spectra and impurity contents inside EPR with thermal treatment. The space charge was detected with the pulsed electroacoustic (PEA) method and the phase shift of detecting pulse under 50 Hz AC field was realized according to the automatic equal phase shift (AEPS) principle. The results show three main types of impurities in untreated EPR. Three distinct regions of space charge distribution are seen in untreated EPR under a 50-Hz AC field. The mean phase density of space charge ρθ is increased with the enhancement of the applied field from 15 to 61 kV/mm. The maximum electric field distortion rate of untreated EPR tends to rise first and then decrease, ranging from 6.65% to 31.87%. The impurity content and the ρθ decreased significantly for EPR thermal treated at 150 °C for 18 h. Corresponding, the maximum electric field distortion rate is effectively reduced to 0.66%. Finally, the space charge source and migration process are speculated based on the diffusion trend of the space charge isodensity line and the migration direction of various charges under the electric field.

Published in IEEE Access

ISSN: 2169-3536 (Online)
Publisher: IEEE
Country of publisher: United States
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering
Website: https://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=6287639

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