用多极理论分析时谐磁场-载流导体涡流场问题  

Multipole Theory Method of Calculating Eddy Current Field of Current Carrying Conductors in Transverse Harmonic Magnetic Field

作　　者：郑勤红[1] 曾华[1] 马力[1] 解福瑶[1] 

机构地区：[1]云南师范大学物理与电子信息学院,650092

出　　处：《电工技术学报》2002年第1期31-34,共4页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金 ( 1996 10 0 4);云南省自然科学基金 ( 98A0 2 7M);云南省中青年学术和技术带头人培养资助项目 ( 2 0 0 0YP16 )

摘　　要：从低频情况下时谐磁场 -载流导体涡流问题的基本电磁场方程出发 ,利用二维Helmholtz方程、Laplace方程边值问题的多极理论通解 ,推导出用多极理论计算时谐磁场 -载流导体涡流问题的计算公式及相应的强加边界条件 ,给出其计算实施过程 。This paper illustrates how the multipole theory (MT) method can be applied to calculate eddy current field of current carrying conductors in transverse harmonic magnetic field. The field functions of eddy current field equations are formulated by a set of MT series solutions, and Ampere′s law, as an addtional boundary condition, is used to guarantee that the total net current of each current carrying conductor is not changed due to the induced field. By calculating and analyzing engineering problem, it is shown that the MT method is an effective approach for calculating eddy current field of current carrying conductors in transverse harmonic magnetic field.

关 键 词：多极理论 时谐磁场 载流导体 涡流场 

分 类 号：TM154[电气工程—电工理论与新技术]