直线感应电动机起动性能的有限元计算

The Finite Element Calculation of Starting Performance in Linear Inductive Motor

以一台容量 5 5 5 0VA的直线感应电动机为例 ,在考虑纵向端部效应的情况下将整个直线感应电动机模型作为求解域 ,采用有限元法对其磁场进行了数值计算。把次级导电板切向磁场计算结果采用付立叶谐波分析的方法分解为空间基波和一系列谐波 ,通过对磁场的分析可以计算出直线感应电动机的起动性能。最后将理论计算结果与实验结果进行了比较 ,验证了计算方法的准确性。

In this paper,considering longitudinal end effect,the magnetic field of the whole linear motor model was calculation in finite element method.In virtue of Fourier harmonic analysis,the tangent magnetic field of secondary conductive plane was divided into spatial fundamental wave and a series of harmonic wave.By analyzing magnetic field,the starting performance of the linear inductive motor was calculated.In the paper,a 5 550VA linear inductive motor was calculated in example,and by comparing computed results with test results,the computed results prove accurate.