永磁混合悬浮磁铁设计及特性分析

基于磁路电路等效性原理,构建了混合悬浮系统的数学模型,并从承载力、可控性及永磁工作点对混合悬浮磁铁进行了优化设计。对于设计的混合磁铁,进行了刚度问题的分析,推导了刚度与永久磁铁截面积及厚度的关系,并导出在最优间隙反馈系数下混合磁铁结构的最优悬浮刚度。有限元仿真结果表明,适当增加永久磁铁的截面积能提高混合磁铁的承载能力、可控性及悬浮刚度,并使永磁材料工作于最大能积点附近。

Optimal Design and Characteristic Analysis of Hybrid Magnet in Maglev System

The successful realization of a near-zero-power-loss hybrid Maglev system relies heavily on the optimal design of the hybrid magnet consisting permanent magnets (PM) and electro magnets. The mathematical model for hybrid levitation system was built based on the correspondence between the electro-circuit and the magnetic circuit. And the hybrid magnet's structure was optimized from three aspects,as lift force,controllability and working point of the PM. Researches on the stiffness of the hybrid magnet,and th...