基于有限元方法的悬浮牵引兼用直线感应电机的动态性能分析

Analysis of Dynamic Characteristics of Combined Levitation and Propulsion Linear Induction Motor Based on Finite Element Method

利用有限元方法建立了直线感应电机的二维瞬态电磁场模型,计算了直线感应电机启动时的动态性能,计算结果表明直线感应电机推力和法向力存在一定的振动,利用后处理方法计算了不同时刻直线感应电机气隙磁密的分布,通过张量法分析了法向力存在振动的原因。

This paper calculated dynamic characteristics of combined levitation and propulsion linear induction motor at start- up times based on Ansoft Maxwell- 2D transient model. By using the method, thrust and normal force ripple were detected.In addition, it investigated the cause for electromagnetic force ripple by analyzing air gap flux aberrance through post process of FEM. The research work of this paper provided foundations for high performance control for combined levitation and propulsion linear induction motors.