气动升力对高速磁浮列车速度的影响分析  

Influence of aerodynamic lift on the high-speed maglev train speed

作　　者：金宇 Jin Yu

机构地区：[1]同济大学磁浮交通工程技术研究中心,上海201804

出　　处：《现代城市轨道交通》2023年第2期27-30,共4页Modern Urban Transit

基　　金：科技部国家重点研发计划(2016YFB1200602-31)。

摘　　要：文章首先分析高速磁浮列车运行阻力和气动升力随列车速度的变化规律;然后,通过分析气动升力、列车悬浮力和牵引力三者之间的关系,得到在气动升力影响下牵引力的变化曲线;最后,以上海高速磁浮系统为例,分析气动升力对列车运行速度的影响。结果表明,为应对气动升力的增加,悬浮磁场悬浮力相应调节减弱,导致在相同的牵引电流条件下直线电机输出的牵引力减小,最终降低列车所能达到的最高运行速度。This paper analyzes how variations in the running resistance and aerodynamic lift of the highspeed maglev train affect the actual running speed of the train.By analyzing the relationships among aerodynamic lift,suspension force,and traction force,the variation curve of traction force under the influence of aerodynamic lift is obtained.Taking Shanghai highspeed maglev system as an example,the influence of aerodynamic lift on train speed is analyzed at last.The results show that in response to an increase in aerodynamic lift,the suspension magnetic field and suspension force will decrease,resulting in a reduction of the traction force output by the linear motor under the same traction current conditions,and ultimately decreasing the maximum speed that the train can reach.

关 键 词：高速磁浮 列车 气动升力 悬浮控制 牵引控制 最高速度 

分 类 号：U264.14[机械工程—车辆工程]