Measurement of resistive and absorption currents in capacitor films up to breakdown

Conference Record of the 2006 IEEE International Symposium on Electrical Insulation Pub Date : 2006-06-11 DOI:10.1109/ELINSL.2006.1665304

Chunchuan Xu, S. Boggs

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引用次数: 15

Abstract

An electronic system with active feedback has been developed to facilitate measurement of resistive currents in polymer films up to breakdown. The system cancels the capacitive current actively to facilitate the measurement of the resistive current. The measured current is the result of the very rapid relaxation from a capacitive field distribution to a resistive field distribution at very high fields approaching breakdown. If the material were truly homogeneous, the resistive and capacitive field distributions would be the same. Most polymers are semicrystalline, with crystallites which have much lower conductivity than the amorphous regions with the result that the capacitive and resistive distributions are not the same. Absorption current data up to breakdown (~700 V/m) are presented for biaxially oriented polypropylene (BOPP) made by both the tenter and bubble process. These data are compared with measurements of polystyrene capacitor film which is amorphous. Transient nonlinear finite element analysis computer simulations are presented in a companion paper

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电容薄膜中直至击穿的电阻和吸收电流的测量

开发了一种具有主动反馈的电子系统，以方便测量聚合物薄膜中直至击穿的电阻电流。该系统主动消除容性电流，方便电阻电流的测量。测量到的电流是在接近击穿的非常高的磁场下，从电容场分布迅速弛豫到电阻场分布的结果。如果材料是真正均匀的，那么电阻场和电容场的分布将是相同的。大多数聚合物是半晶的，晶体的电导率比非晶区域低得多，导致其电容和电阻分布不相同。介绍了用压缩法和气泡法制备的双轴取向聚丙烯(BOPP)在击穿前(~700 V/m)的吸收电流数据。这些数据与非晶聚苯乙烯电容器薄膜的测量结果进行了比较。在另一篇论文中介绍了瞬态非线性有限元分析的计算机模拟

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Conference Record of the 2006 IEEE International Symposium on Electrical Insulation

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