次级结构对直线感应电机运行特性的影响  

Influence of Operation Characteristics on Linear Induction Motor According to Secondary Conductor Plate Structure

作　　者：葛研军[1] 任广巍 王大明 刘佳男 周哲 GE Yan-jun;REN Guang-wei;WANG Da-ming;LIU Jia-nan;ZHOU Zhe(School of Electrical Information Engineering,Dalian Jiaotong University,Dalian 116028,China)

机构地区：[1]大连交通大学电气工程信息学院,大连116028

出　　处：《微特电机》2021年第8期6-11,共6页Small & Special Electrical Machines

基　　金：辽宁省教育厅重点公关项目(JDL2020001);大连市科技创新基金项目(2018J12SN071)。

摘　　要：针对直线感应电机次级矩形结构大气隙运行时,其所产生的电磁力小且制动时间较长等缺陷,提出了三角形及梯形两种次级导体结构。在初级电磁结构不变条件下,分别建立了矩形、三角形及梯形等3种次级导体结构的二维有限元模型,获得了上述3种结构的机械特性曲线;通过分析机械特性曲线、单位电流所产生的电磁推力及其所需的制动时间,认为三角形次级导体结构最优。上述分析结果为直线感应电机次级结构优化提供了参考。Two secondary conductor plate structures(triangular and trapezoidal)were proposed to solve the defects of small electromagnetic thrust and longer braking time when the secondary rectangular structure of the linear induction motor(LIM)is operating in a large air gap.Under the condition that the primary electromagnetic structure remained unchanged,two⁃dimensional finite element models of three secondary conductor plate structures such as rectangle,triangle and trapezoid were established respectively,and the mechanical characteristic curves of the above three structures were obtained.Analysis of the thrust by the mechanical curve,and the unit current generated by the braking time required,it was considered that the proposed structure triangular secondary conductor optimal.The above analysis results provide a reference for the optimization of the LIM secondary structure.

关 键 词：直线感应电机 次级导体结构 电磁推力 制动时间 

分 类 号：TM346[电气工程—电机] TM359.4