用边界元法分析直线电机的瞬态电磁场

Analysis of the Transient Field of LIM By the Boundary Element Method

本文用边界无法计算了扁平式直线电机的瞬态电磁场,推导了拉氏方程的时空基本解以及一系列边界元计算公式,合理地处理了由于媒质运动引起涡流方程中增加的μσv_x(A/x)项。样机的试验证明了本文提出的数学模型、理论分析和处理方法以及计算机程序基本上是正确的。

In this paper, the transient field of linear induction motor is analyzed with the boundary element method. The time-space fundamental solution for Laplace equation and a series of BEM formulations are developed. The adding term μσν_x (A)/(x) in the diffusion equation due to the motion of secondary of LIM is treated with reasonableness in solving the process of BEM. The experiment al result of the test motor verifies the correctness of the mathematical model, the theoretical analysis, the treating methods and the computer program all developed here.