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研究适用于EMS型磁浮列车的全尺寸电磁永磁混合悬浮磁铁的设计问题。通过比较永久磁铁的不同安装位置的影响,给出混合磁铁的结构方案。根据混合磁铁吸力公式,得出只有在永久磁铁矫顽力大于一定值时利用混合磁铁才能减小悬浮能耗。分析了混合磁铁的设计要求,研究满载起浮、稳态悬浮、空载吸死三种典型情况下对电磁线圈窗口高度的约束,得出混合磁铁的优化设计参数。最后利用Ansoft有限元磁场分析软件对钕铁硼永磁材料的拼装影响进行分析,给出校正后的悬浮磁铁设计结果。
This paper studies the design of a full-size electromagnetic permanent magnet hybrid suspension magnet suitable for an EMS-type maglev train. By comparing the different positions of the permanent magnet installation, the structure of the hybrid magnet is given. According to the hybrid magnet suction formula, it is concluded that the use of hybrid magnets can reduce the energy consumption of suspension only when the coercivity of the permanent magnet is greater than a certain value. The design requirements of the hybrid magnet are analyzed. The constraints on the height of the electromagnetic coil in the three typical cases of full load, steady state suspension and no-load suction are studied. The optimal design parameters of the hybrid magnet are obtained. Finally, Ansoft finite element magnetic field analysis software is used to analyze the assembly effect of the NdFeB permanent magnet materials, and the calibrated suspension magnet design results are given.