A novel hybrid FEM-BEM method for 3D eddy current field calculation using current density J

作     者：刘志珍 王衍章 贾智平 孙英明 

作者机构：School of Electrical Engineering Shandong University Jinan 250061 China Department of Science and Technology Shandong University Jinan 250061 China School of Computer Science and Technology Shandong University Jinan 250061 China Center of ComputerJinan University Jinan 250002 China Correspondence should be addressed to Liu Zhizhen 

出 版 物：《Science China(Technological Sciences)》 (中国科学（技术科学英文版）)

年 卷 期：2003年第46卷第1期

页      面：41-48页

核心收录：

学科分类：0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 

主　　题：conductor eddy current density magnetic field intensity 3D eddy current field FEM BEM coupling. To solve a large eddy current field is one of the most difficult problems in the numerical 

摘      要：This paper introduces a novel hybrid FEM-BEM method for calculating 3D eddy cur-rent field. In the eddy current region, the eddy current density J is solved by the finite element method (FEM) which is discretized by brick finite element mesh, while in the eddy current free re-gion, the magnetic field intensity H is solved by the boundary element method (BEM) which is dis-cretized by rectangular boundary element mesh. Under the boundary conditions, an algebraic equation group is obtained that only includes J by eliminating H. This method has many advan-tages over traditional ones, such as fewer variables, more convenient coupling between the FEM and the BEM and wider application to multiply-connected regions. The calculated values of two models are in good agreement with experimental results. This shows the validity of our method.