中高速磁浮直线发电机感应电动势影响分析

Analysis on Influencing Factors of Electromotive Force of Linear Generator in Medium and High Speed Maglev Train

中高速磁浮列车采用长定子直线同步电机牵引,高速运行时车载设备依靠直线发电机的非接触感应发电进行供电。本文介绍了直线发电机的基本工作原理,理论推导了感应电势的表达式,利用有限元仿真分析定子磁场、车辆速度、气隙、车辆载荷等因素对各个直线发电机感应电动势的影响,其分析结论可为中高速磁浮列车直线发电机系统的设计提供一定的理论参考。

The medium and high speed maglev trains use the long stator linear synchronous motor,and on-board equipment relies on non-contact induction generation of the linaer generator to supply power when train is high-speed operation.In this paper,the basic principles of the linaer generator was introduced,the mathematical expression of the electromotive force was derived,the influence of stator electromagnetic field,maglev speed,air gap,maglev load between the electromotive force was studied by the finite element simulation software.The research results in this paper provides certain theoratical reference for the design of the linear generator system in maglev trains.