中低速磁浮列车导向工况下电磁力特性仿真

中低速磁浮列车通过U型电磁铁铁芯和F型轨道磁极相互错位产生横向电磁拉力,来迫使列车导向,其导向电磁力大小对列车运行安全有直接影响。针对中低速磁浮列车用混合悬浮电磁铁存在横向偏移和纵向偏转两种典型导向工况,建立三维数值模型,并进行仿真计算表明:在同样间隙和线圈电流下,电磁铁横向偏移越大,或纵向偏转角越大,所产生的悬浮力越小,而导向力越大;且导向力比悬浮力呈更大的变化趋势。在最大允许机械偏移情况下,混合电磁铁较传统纯电励磁形式的悬浮电磁铁的导向能力略有降低。

Electromagnetic Force Property Simulation of Mid-low Speed Maglev Vehicle Under Guide Operating State

The mid-low speed maglev train changes movement direction by means of electromagnetic force in landscape orientation with an excursion between U-type electromagnet and F-type track iron.The electromagnetic force under guide operating state has a direct effect on vehicle running safe.A 3D numerical value simulation for both guide operating state has been done,i.e.landscape excursion and longitudinal deflection.The simulation results show that the suspension force is smaller and the guide force is larger with a larger landscape excursion or longitudinal deflection under the same air gap and coil current.Furthermore,the guide force charges faster than the suspension one.The guide ability of the mix suspension electromagnet is a little smaller than tradition one under the maximum allowable mechanical excursion.