摘要
悬浮电磁铁作为EMS型磁浮列车的重要部件,用于提供列车悬浮所需的电磁力,其电磁特性对磁浮列车的性能有重要影响。本文给出了一个与长沙磁浮快线实际应用的电磁铁尺寸相近的算例,用Ansys的Maxwell 2D模块,仿真超导线圈替代铝线圈后悬浮性能的变化情况,并在此基础上对高温超导电磁铁进行优化。结果表明,将U型铁芯底部厚度由58 mm变为53、48及43 mm后,悬浮力变化较小,但可有效降低车体自重;磁极宽度分别加宽5、10及15 mm后,电磁铁的磁饱和情况得到改善,且一定范围内宽度越大,效果越明显。由此可得,在一定范围内合理减小U型铁芯底部厚度及加大磁极宽度,可提升电磁铁的悬浮性能。
As an important part of Electromagnetic Suspension(EMS)maglev train,the levitation electromagnet is used to provide the electromagnetic force required by train levitation.In this paper,an example similar to the size of electromagnet in the practical application of Changsha Maglev Express was given.Maxwell 2 D module of Ansys was used to simulate the change of suspension performance after replacing aluminum coil with superconducting coil,and on this basis,the high-temperature superconducting(HTS)electromagnet was optimized.The results show that when the bottom thickness of u-shaped core is changed from 58 mm to 53 mm,48 mm and 43 mm,the suspension force changes little,but it can effectively reduce the body weight.When the width of the magnetic pole is widened by 5 mm,10 mm and 15 mm respectively,the magnetic saturation of the electromagnet is improved,and the larger the width is within a certain range,the more obvious the effect is.It can be concluded that reasonably reducing the bottom thickness of u-shaped core and increasing the width of magnetic pole can improve the suspension performance of electromagnet.
作者
李文龙
刘文旭
方进
刘延超
Li Wenlong;Liu Wenxu;Fang Jin;Liu Yanchao(School of Electrical Engineering,Beijing Jiaotong University,Beijing 100044,China)
出处
《低温与超导》
CAS
北大核心
2020年第2期25-29,共5页
Cryogenics and Superconductivity
基金
国家重点研发计划专项项目(2016YFB0401504)资助。
