Title :
Space charge phenomena in partially crystalline polymers: on-line measurement of charge carrier motion under high AC-field stress
Author :
Krause, G. ; Gottlich, S. ; Möller, K. ; Meurer, D.
Author_Institution :
Inst. fuer Allgemeine Elektrotech. & Hochspannungstech., RWTH Aachen, West Germany
Abstract :
A novel experimental setup for directly measuring charge carrier injection and space charge buildup in a needle-plane arrangement under high AC fields is presented. Temperature, frequency, voltage, radius of needle tip, electrode gap, and material of the samples can be varied. First results for semicrystalline polymers reveal the occurrence of charge injection at a distinct field strength, an inception field strength of negative charge carriers that is lower than that of positive ones, and a characteristic change in storage behavior at about 500 Hz
Keywords :
charge measurement; electric breakdown of solids; high field effects; organic insulating materials; partial discharges; polymers; space charge; 500 Hz; charge carrier injection; charge carrier motion measurement; dielectric hysteresis; electric breakdown; electrode gap; high AC-field stress; high voltage stress; inception field strength; needle tip radius; negative charge carriers; on-line measurement; partial discharges; polyethylene; semicrystalline polymers; space charge buildup; storage behavior; Charge carriers; Charge measurement; Crystallization; Current measurement; Frequency; Needles; Polymers; Space charge; Temperature; Voltage;
Conference_Titel :
Conduction and Breakdown in Solid Dielectrics, 1989., Proceedings of the 3rd International Conference on
Conference_Location :
Trondheim
DOI :
10.1109/ICSD.1989.69259
