混合电磁结构磁性部分元等效电路建模技术  

Magnetic Partial Element Equivalent Circuit Modeling Technique for Hybrid Electromagnetic Structure

作　　者：潘启军[1] 马伟明[1] 赵治华[2] 孟进[2] 张磊[2] 吕孝腊 

机构地区：[1]舰船综合电力技术国防科技重点实验室(海军工程大学),湖北省武汉市430033 [2]海军工程大学电力电子技术研究所,湖北省武汉市430033 [3]海军湛江保障基地,广东省湛江市524005

出　　处：《中国电机工程学报》2008年第12期145-150,共6页Proceedings of the CSEE

基　　金：国家自然科学基金委员会创新研究群体科学基金(50421703);国家自然科学基金项目(50677070)。

摘　　要：磁性材料在电磁结构中广泛应用,而传统(标准)部分元等效电路(partial element equivalent circuit,PEEC)方法对包含磁性材料的各种结构进行分析已无能为力。该文提出了基于几何平均距离和空间磁介质均匀化处理的磁性PEEC建模方法(magnetic PEEC,MagPEEC),根据磁性材料边界单元切向磁通密度在边界两边的关系得到了载流磁性材料表面磁化面电流和传导电流的耦合系数矩阵,给出了仅用传导电流表示的系统方程。对矩形单元之间、矩形单元与线单元之间、线单元与线单元之间的各种几何平均距离(geometrical mean distance,GMD)进行了分析,得到了相应的计算公式,在此基础上导出了平均切向磁感应强度的计算公式,并应用于磁性材料的MagPEEC建模。通过有限元(finite element method,FEM)方法对两邻近金属板的新型MagPEEC建模方法进行了验证。Magnetic materials are applied widely, whereas the conventional or standard partial element equivalent circuit （PEEC） is unable to deal with them. The paper provides a novel magnetic PEEC （MagPEEC） modeling technique based on the geometrical mean distance （GMD） and the homogenization process of the magnetic materials. The coupling coefficient matrix between the surface magnetized currents and the conductive currents has been deduced in detail according to the relationship between the tangent magnetic flux densities of the surface elements in or out of the conductor. And then, the system equation expressed only with conductive current is obtained. This paper also works over GMD between rectangular cells, between rectangular and line cells, and between line cells. The formulae of average tangent magnetic flux density are concluded under various conditions, which is utilized to the MagPEEC modeling of magnetic materials. MagPEEC modeling of two conductors has been verified by finite element method （FEM）.

关 键 词：磁性部分元等效电路 建模技术 传导电流与磁化电流 磁化面电流 磁性与非磁性混合结构 

分 类 号：TN03[电子电信—物理电子学]