电工技术学报  2020, Vol. 35 Issue (7): 1398-1409    DOI: 10.19595/j.cnki.1000-6753.tces.190215
电机与电器 |
考虑后退行波的长初级双边直线感应电机电磁性能计算
张千1, 刘慧娟1, 马杰芳1, 李雨蔓2
1. 北京交通大学电气工程学院 北京 100044;
2. 中国科学院空间应用工程与技术中心 北京 100094
Calculation of Electromagnetic Performance for Long Primary Double Sided Linear Induction Motors Considering Backward Traveling Wave
Zhang Qian1, Liu Huijuan1, Ma Jiefang1, Li Yuman2
1. School of Electrical Engineering Beijing Jiaotong University Beijing 100044 China;
2. Technology and Engineering Center for Space Utilization Chinese Academy of Sciences Beijing 100094 China
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摘要 根据一维电磁场理论建立以次级板为运动参考坐标系的长初级双边直线感应电机(DLIM)解析模型。首先推导气隙磁通密度在实数域的表达式,分析端部效应引起的前进和后退行波磁场的时空分布特点及其对基波气隙磁场的影响;然后推导考虑前进和后退行波磁场的电机推力密度和稳态推力表达式,分析推力密度在次级板纵向的分布特点、各电磁推力分量随速度的分布特征以及端部效应对总电磁推力的影响;最后建立电机的有限元模型,对电机的气隙磁场分布和不同频率下推力特性进行计算,并与解析计算的结果对比,证实解析计算方法的准确性,为长初级DLIM的初始设计和后续优化提供理论依据和方法。
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张千
刘慧娟
马杰芳
李雨蔓
关键词 双边直线感应电机后退行波解析法电磁性能端部效应    
Abstract:One dimensional electromagnetic theory is applied to establish the analytical model of long primary double sided linear induction machine (DLIM) with secondary as moving reference frame. Firstly, the expression of the air-gap flux density in the real domain is derived by numerical method. The temporal-spatial distribution characteristics of the forward and backward traveling waves caused by the end effect and the influence of these two traveling waves on the normal component of the air-gap flux density are analyzed. And then the expressions of thrust force density and thrust which considering the forward and backward traveling waves are deduced, and the longitudinal distribution characteristics of thrust density on the secondary are investigated. The characteristics of each thrust component with velocity and the effect of end effect on the fundamental thrust are studied. Finally, the air-gap magnetic field distribution and thrust characteristics of the DLIM at different frequencies are calculated based on the FEM model, and the results are compared with those of the analytical method. The accuracy of the analytical method is verified, which contributes to the initial design and subsequent optimization of long primary DLIMs.
Key wordsDouble sided linear induction machine(DLIM)    backward traveling wave    analytic method    electromagnetic performance    end effect   
收稿日期: 2019-03-05      出版日期: 2020-04-07
PACS: TM359.4  
  TM153  
基金资助:中央高校基本科研业务费专项资金(2018YJS161)和北京交通大学科研项目(E18L00100)资助
通讯作者: 张 千 男,1986年生,博士研究生,工程师,研究方向为电机及其控制。E-mail:qianzh@bjtu.edu.cn   
作者简介: 刘慧娟 女,1967年生,教授,博士生导师,研究方向为新型电机的运行理论及控制。E-mail:hjliu@bjtu.edu.cn
引用本文:   
张千, 刘慧娟, 马杰芳, 李雨蔓. 考虑后退行波的长初级双边直线感应电机电磁性能计算[J]. 电工技术学报, 2020, 35(7): 1398-1409. Zhang Qian, Liu Huijuan, Ma Jiefang, Li Yuman. Calculation of Electromagnetic Performance for Long Primary Double Sided Linear Induction Motors Considering Backward Traveling Wave. Transactions of China Electrotechnical Society, 2020, 35(7): 1398-1409.
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https://dgjsxb.ces-transaction.com/CN/10.19595/j.cnki.1000-6753.tces.190215          https://dgjsxb.ces-transaction.com/CN/Y2020/V35/I7/1398