摘要
中低速磁浮列车依靠悬浮电磁铁产生电磁吸力,实现悬浮和导向,针对悬浮电磁铁结构参数设计问题,提出一种基于磁热耦合仿真的方法对悬浮电磁铁进行优化研究。通过对电磁铁结构分析,提出对悬浮电磁铁进行内扣和外扣两种方式,并分别建立三维有限元参数化计算模型,分析其主要发热源和热流量计算方法。在电磁铁温升不超过设定值的情况下,以提升悬浮电磁铁的浮重比为目标,采用遗传算法对结构参数进行寻优求解。仿真试验结果表明,在保证悬浮力达到要求的情况下,所提方法对电磁铁进行内扣操作后,其质量减少43%,进行外扣操作后,电磁铁质量减少58%,并且电磁铁的稳态温升没有超过设定值。所提出的设计方案更加符合实际,为后续设计提供一定的参考依据。
Medium and low-speed maglev trains rely on the suspension electromagnet to generate electromagnetic attraction to achieve suspension and guidance,and in view of the design of the structural parameters of the suspended electromagnet,a method based on electromagnet-thermal coupling simulation is proposed to optimize the research of the suspended electromagnet.Through the structural analysis of the electromagnet,two methods of internal and external buckle of the suspended electromagnet are proposed,and a three-dimensional finite element parametric calculation model is established respectively to analyze the main heat source and heat flux calculation method.Under the condition that the temperature rise of the electromagnet does not exceed the set value,the optimization algorithm is used to improve the buoyancy-to-weight ratio of the suspended electromagnet,and the structural parameters are solved optimally.The simulation results show that under the condition of ensuring that the suspension force meets the requirements,the mass of the electromagnet is reduced by 43%after the internal buckle operation of the proposed method,and the mass of the electromagnet is reduced by 58%after the external buckle operation,and the steady-state temperature rise of the electromagnet does not exceed the set value.The proposed design scheme is more realistic and provides a certain reference basis for subsequent design.
作者
孙超
张昆仑
SUN Chao;ZHANG Kunlun(Key Laboratory of Magnetic Suspension Technology and Maglev Vehicle,Ministry of Education,Southwest Jiaotong University,Chengdu 611756;School of Electrical Engineering,Southwest Jiaotong University,Chengdu 611756)
出处
《电气工程学报》
CSCD
北大核心
2024年第2期344-352,共9页
Journal of Electrical Engineering
关键词
磁浮列车
悬浮电磁铁
磁热耦合
有限元分析
参数设计
Maglev train
suspension electromagnet
magnetothermal coupling
finite element analysis
parameter design
