Time-domain analysis of quasistatic electric fields in media with frequency-dependent permittivity

被引：7

作者：

Preis, K ^{[1
]}

Bíró, O

Supancic, P

Ticar, I

Matzenauer, G

机构：

[1] Graz Tech Univ, Inst Fundamentals & Theory Elect Engn, IGTE, A-8010 Graz, Austria

[2] Univ Min & Met Leoben, Inst Struktur & Funkt Keram, A-8700 Leoben, Austria

[3] Mat Ctr Leoben, A-8700 Leoben, Austria

[4] Univ Maribor, Fac Elect Engn & Comp Sci, SLO-2000 Maribor, Slovenia

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2004年 / 40卷 / 02期

关键词：

finite-element calculations; frequency-dependent permittivity; time-dependent electric fields; transient analysis;

D O I：

10.1109/TMAG.2004.825455

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A time-domain method is presented to treat transient quasistatic electric problems if the permittivity depends on frequency. The inverse Fourier transform of the complex permittivity spectrum is used in a time-stepping procedure. The method is numerically realized using finite-element techniques. The approach is validated by assuming a frequency dependence having an analytical inverse transform. Thus, the frequency dependence of the permittivity of a real electroceramic material is determined from measurement results by curve fitting. An example using this curve illustrates the effect of the frequency dependence of permittivity on the time-domain solution.

引用

页码：1302 / 1305

页数：4

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