EMS磁悬浮列车的零电流型永磁电磁混合磁铁设计技术研究  

Design of Zero-Power Hybrid Magnet with Permanent Magnets and Electromagnets in EMS Maglev Vehicles

作　　者：李云钢[1] 张晓[1] 程虎[1] 刘恒坤[1] 

机构地区：[1]国防科学技术大学机电工程与自动化学院,湖南长沙410073

出　　处：《机车电传动》2011年第5期30-32,43,共4页Electric Drive for Locomotives

摘　　要：针对EMS磁悬浮列车的零电流型永磁电磁混合磁铁,研究其永磁体和电磁线圈结构参数的设计方法。永磁体安装在磁轭部位,其截面积不受磁极面积的限制,研究得出永磁体的厚度与其截面积的约束关系,并给出永磁重量最小化的设计方法。根据最大平衡安匝数要求,研究得出相对于纯电磁铁,混合磁铁的电磁线圈匝数可减半。由于混合磁铁的可控性能低于纯电磁铁,基于可控性要求,给出修正永磁体的结构参数的方法。最后给出一个实例,将1 t负载悬浮在8 mm间隙内,所需永磁体仅为6.4 kg。To design the zero-power hybrid magnet with permanent magnets and electromagnets for EMS maglev vehicles,the structural parameters of its permanent magnets and electromagnets were researched on.The permanent magnet was located at the middle of the yoke,which made its sectional area independent from the area of the pole.The restriction between the thickness and the area of the permanent magnet was presented,and the method of designing the permanent magnet with minimum mass was given.According to the requirements of the maximum balance ampere-turn,it was concluded that the ampere-turn of the hybrid magnet can be reduced to half of that of the pure electromagnet.It was shown that the controllability of the hybrid magnet is always weaker than that of the pure electromagnet,and then a revision of the design for the permanent magnet was proposed based on the requirement of the controllability.Finally,a design example of the hybrid magnet was presented with 1 t load suspending at 8 mm,and the mass of the permanent magnet was only 6.4 kg.

关 键 词：磁悬浮 永磁体 永磁电磁混合磁铁 可控性 

分 类 号：U292.917[交通运输工程—交通运输规划与管理]