Roughness Enhanced Charge Injection and Field Dependent Conduction Mechanisms for Bipolar Charge Transport Models
Paper in proceeding, 2020
can locally enhance electric field and stimulate charge injection at microscale asperities. This work studies the impact of surface roughness on charge injection by performing space charge measurements on cable peelings and evaluating the observed charge evolution with a bipolar charge model. The behavior during both polarization and depolarization stages was investigated. A unique set of conduction and injection parameters is suggested allowing for realistic interpretation of charge accumulation and decay observed in the measurements.
surface roughness
HVDC cable
space charge
electric field
Author
Espen Doedens
Chalmers, Electrical Engineering, Electric Power Engineering
E. Markus Jarvid
Nexans
Yuriy Serdyuk
Chalmers, Electrical Engineering, Electric Power Engineering
Proceedings of the 2020 IEEE 3rd International Conference on Dielectrics, ICD 2020
413-417
9781728189833 (ISBN)
Valencia, Spain,
Subject Categories
Manufacturing, Surface and Joining Technology
Other Electrical Engineering, Electronic Engineering, Information Engineering
Areas of Advance
Energy
DOI
10.1109/ICD46958.2020.9341958
ISBN
9781728189833