电磁电动式磁悬浮装置的磁场分析和力特性研究

针对目前电磁式磁悬浮无法实现静止悬浮,为实现静止稳定磁悬浮的问题,提出旋转磁场电动式磁悬浮装置方案,该装置通过在初级绕组中通入三相交变电流产生圆周运动的交变磁场,与其在次级导体中感应出的涡流磁场相互作用产生悬浮力,能够在装置静止的条件下实现稳定的悬浮.为准确分析装置力特性,建立悬浮装置的多层分环电磁模型对磁场分布求解,并直接利用磁场分析所得的磁场分布结果求解次级悬浮力和水平转矩,给出磁悬浮装置的力特性与其参数的关系；建立有限元模型,分析得出了系统的磁场分布,电磁力等的分析结果；搭建了实验平台对永磁电动式系统的基本特性进行研究,主要是悬浮力和转矩的测试；利用有限元计算和样机实验验证了理论分析和计算结果.

Characteristic and magnetic field analysis of electro-magnetic electro-dynamic levitation device

To realize the static steady magnetic levitation,this paper proposed a rotation field electro-dynamic maglev system.The system created rotation electromagnetic field by 3-phase alternating current in primary winds,inducted eddy field in secondary and created lift force,which can realize inherently stable electro-dynamic magnetic levitation while static.It established a sub-loop unfold model,analyzed the magnetic field distribution,calculated lift force and torque directly by field distribution,gave the relationship between force characteristics and levitation device parameters.The results indicate that under certain input.A prototype machine was established,and simulations by finite element analysis(FEA) software and experiments were carried out.Comparisons of simulation solution,analytical solution and measurement reveal that three methods are consistent,and the analytical model is effective and efficient.