摘要
针对传统斥力型磁悬浮系统永磁部分磁密利用率低、悬浮高度不高、悬浮力小等问题,引入Halbach永磁阵列,对传统模型进行改进,其主要思想是在不改变模型材料与尺寸的前提下,将传统模型底部主磁环设计为Halbach阵列,利用Halbach阵列单边磁场的特点,提高底部主磁环的磁场利用率。分析结果表明,Halbach斥力型磁悬浮模型的磁场分布强度比传统模型大将近2倍;对于相同的悬浮高度,Halbach阵列结构模型的悬浮力明显高于传统模型,悬浮高度越低,二者的差异越大;对于同样重量的悬浮物,Halbach阵列结构可以获得更大的悬浮气隙。研究结果为斥力型磁悬浮模型的结构尺寸优化和悬浮控制提供依据。
Aiming at the problem of low utilization ratio of permanent magnetic flux density,low suspensionheight,and small suspension force of traditional repulsive force type magnetic levitation system,Halbach permanentmagnet array is introduced to improve the traditional model.The main idea is using Halbach array to improve thetraditional model by using Halbach array unilateral magnetic field characteristics without changing the model materialand size of the premise.The analysis results show that the magnetic field distribution of the Halbach repulsion model isnearly two times higher than that of the traditional model.For the same height of suspension,the suspension force ofHalbach array structure model is much higher than that of the traditional model,and the lower the height of thesuspension,the greater the difference between the two.For the same weight of suspended matter,the system withHalbach array structure can obtain a larger suspension air gap.The result provides a basis for the structure sizeoptimization and suspension control of the repulsive force type magnetic levitation model.
作者
王超
蒋启龙
WANG Chao;JIANG Qi-long(School of Electrical Engineering, Southwest Jiaotong University, Chengdu 610031, China)
出处
《磁性材料及器件》
CAS
2016年第5期12-15,31,共5页
Journal of Magnetic Materials and Devices
关键词
斥力型磁悬浮
HALBACH阵列
悬浮力
有限元分析
repulsive magnetic levitation model
Halbach array
levitation force
finite element analysis
