Eddy-Current Losses in Laminated Cores and the Computation of an Equivalent Conductivity

被引：46

作者：

Bermudez, Alfredo ^{[1
]}

Gomez, Dolores ^{[1
]}

Salgado, Pilar ^{[1
]}

机构：

[1] Univ Santiago de Compostela, Dept Appl Math, Santiago De Compostela 15782, Spain

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2008年 / 44卷 / 12期

关键词：

Core losses; eddy currents; equivalent conductivity; laminated core;

D O I：

10.1109/TMAG.2008.2005118

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：

This paper deals with the computation of eddy-current losses in laminated cores. In the first part we recall some approximate formulas existing in the literature and implemented in many electromagnetic computer packages. Then we assess their accuracy by making comparisons with the exact loss values obtained by numerical solution of the quasi-static Maxwell equations. In the second part we introduce a definition of an equivalent electric conductivity allowing us to replace the laminated core with a homogeneous isotropic or anisotropic medium. We compare the values of this equivalent conductivity with those obtained from some approximate formulas.

引用

页码：4730 / 4738

页数：9