应用组合法计算三维非线性涡流场中的损耗

在样条积分方程法，有限元法和表面阻抗法的基础上，提出了一种求解三维非线性磁场中涡流损耗的新方法－－组合法，其特点是针对工程电磁场数值计算中几种方法各自的适用范围，将求解区域划分为积分方程求解区和有限元求解区，通过边界条件的处理将两种算法耦合，考虑到波在导体中传播的特性，应用表面阻抗的概念，把导体内部的涡流损耗作用反映到导体表面，并与有限元方程耦合求解出导体表面的涡流损耗，针对ＴＥＡＭ ＷＯＲＫＳＨ

Calculation of Eddy Current Loss in 3D Nonlinear Field Using Hybrid Method

On the basis of the spline integral equation method, the finite element method and the surface impedance method a new method is established for calculating eddy current loss in 3D nonlinear eddy current field. Considering an accommodation of each method, the computing rigion is divided into SIEM region and FEM region, the two methods are coupled by dealing with the boundary condition. Considering the transmission property of wave, using the concept of surface impedance, the effect of eddy current in conductor is reflected in the surface of conductor. Coupled with FEM, the eddy current loss of metal plate is computed. With TEAM WORKSHOP Problem 21 it is shown that the method and its program are feasible.