次级非中心位置工况双边直线电动机有限元分析

微特电机 ›› 2020, Vol. 48 ›› Issue (4): 28-31.

次级非中心位置工况双边直线电动机有限元分析

吕刚, 陈玫志, 杨镜, 曾迪晖, 周桐

北京交通大学电气工程学院,北京 100044

收稿日期:2019-02-21 出版日期:2020-04-28 发布日期:2020-04-24
作者简介:吕刚 (1976--),男,教授,博士生导师,研究方向为直线电机及其控制,电机优化设计.

Analysis for Double-Side Linear Induction Motor with Secondary Non-Center Position

LÜ Gang, CHEN Mei-zhi, YANG Jing, ZENG Di-hui, ZHOU Tong

School of Electrical Engineering, Beijing Jiaotong University,Beijing 100044,China

Received:2019-02-21 Online:2020-04-28 Published:2020-04-24

摘要/Abstract

摘要： 在理想工况下双边型直线感应电机运行时,次级处于电机中心位置,由于曲线行程和振动等原因,初级会发生不同程度的横向偏移导致次级偏离中心位置,从而电机力特性发生较大变化.通过建立短初级双边型直线感应电机三维解析模型,给出了直线感应电机的数值计算方法和边界条件,获得初级不同偏移程度下直线电动机推力和法向力的表达式.对该工况下的直线感应电机进行三维有限元仿真,得到不同偏移程度下气隙磁场,推力和法向力的特性,分析了同一偏移下频率对非磁性次级电机的磁场和法向力影响.结果表明,随着初级偏移程度不断增大,气隙磁场的磁感应强度略有下降,而抑制偏移的法向力和推力逐渐增大.

关键词: 直线感应电机, 双边型, 三维有限元仿真, 横向偏移, 推力, 法向力

Abstract: Under ideal conditions, when the double-sided linear induction motor is running, the secondary is at the center of the motor.Due to the influence of curve stroke vibration and other external disturbances,the primary will have different degrees of displacement.At this time,the secondary deviation from the center position causes a large change in the motor force characteristics.By establishing a 3D analytical model of a short primary double-sided linear induction motor,the numerical calculation method and boundary conditions of the linear induction motor were given.The 3D finite element simulation of the linear induction motor under this condition was carried out to obtain the characteristics of air gap magnetic field,thrust and normal force at different displacement.The analysis showed that as the primary displacement increased,the magnetic field strength of the air gap magnetic field decreases slightly,while the normal force and thrust to suppress the displacement increases gradually.

Key words: linear induction motor, double-sided, three-dimensional finite element simulation, lateral displacement, thrust force, normal force

中图分类号:

吕刚, 陈玫志, 杨镜, 曾迪晖, 周桐. 次级非中心位置工况双边直线电动机有限元分析[J]. 微特电机, 2020, 48(4): 28-31.

LÜ Gang, CHEN Mei-zhi, YANG Jing, ZENG Di-hui, ZHOU Tong. Analysis for Double-Side Linear Induction Motor with Secondary Non-Center Position[J]. Small & Special Electrical Machines, 2020, 48(4): 28-31.

参考文献 16

[1]	LEE H W,KIM K C,LEE J.Review of maglev train technologies[J]. IEEE Transactions on Magnetics,2006.42(7):1917-1925.
[2]	DOYLE M R,SAMUEL D J,CONWAY T,et al.Electromagnetic aircraft launch system-EMALS[J].IEEE Transactions on Magnetics,1995,31(1):528-533.
[3]	LIU H C,CHO S,HONG H S.Design and analysis of a double-layer magnetic circuit structure for high-force density hybrid fuel injector[J]. IEEE Transactions on Magnetics,2017,53(11):1-5.
[4]	ABDOLLAHI S E,MIRZAYEE M,MIRSALIM M.Design and analysis of a double-sided linear induction motor for transportation[J]. IEEE Transactions on Magnetics,2015,51(7):1-7.
[5]	吕刚. 城市轨道交通车辆概论[M].北京:北京交通大学出版社,2011:187-189.
[6]	吕刚,曾迪晖,周桐,等.初级横向偏移时直线感应电机磁场与推力的有限元分析[J].电机与控制学报,2016,20(4):64-68.
[7]	黄书荣,徐伟,胡冬.轨道交通用直线感应电机发展状况综述[J].新型工业化,2015,5(1):15-21.
[8]	LÜ G,ZENG D,ZHOU T.A novel MMF distribution model for 3D analysis of linear induction motor with asymmetric cap-secondary for metro[J].IEEE Transactions on Magnetics,2017,53(9):1-7.
[9]	LÜ G,ZENG D,ZHOU T,et al.Investigation of force and secondary losses in linear induction motor with the solid and laminated back iron secondary for metro[J].IEEE Transactions on Industrial Electronics,2017,64(6):4382-4390.
[10]	ZHANG Y X,ZHANG M Y,MA W M.Modeling of a double-stator linear induction Motor[J]. IEEE Transaction on Energy Conversion,2012,27(3):572-579.
[11]	ZHANG Y X,LIN C M,XU J,et al.Analysis of coupling effect of double-side linear induction motor with shielding structure[C]//17th International Conference on Electrical Machines and Systems(ICEMS).IEEE,2014:3638-3641.
[12]	张志华,史黎明,李耀华.栅格次级双边直线感应电机特性[J]. 电工技术学报,2014,29(3):103-110.
[13]	龙遐令. 直线感应电动机的理论和电磁设计方法[M].北京:科学出版社,2006.
[14]	OOI B T,WHITE D C.Traction and normal forces in the linear induction motor[J]. IEEE Transactions on Power Apparatus and Systems,1970,89(4):638-645.
[15]	LÜ G,ZHOU T,ZENG D H,et al.Influence of parameters of cap-lamination secondaries on performances in single-sided linear induction motors[J]. IET Electric Power Applications,2017,11(3):393-398.
[16]	崔天翔,庄圣贤,周娟,等.基于Ansoft 的磁电机建模与仿真分析[J]. 微特电机,2018,46(1):13-15.