Winding Function Theory Based Thrust Calculation on Nested-loop Secondary Linear Machine Adapted to Linear Metro  

作　　者：Yaping Zhang Jian Ge Wei Xu Hao Tang Yang Gao Xiaoliang Chen Shihu Su Zhen Bao 

机构地区：[1]the State Key Laboratory of Advanced Electromagnetic Technology,School of Electrical and Electronic Engineering,Huazhong University of Science and Technology,Wuhan 430074,China [2]IEEE [3]Xiangyang CRRC Motor Technology Co.,Ltd.,Xiangyang 441000,China [4]CRRC Zhuzhou Institute Co.,Ltd.,Zhuzhou 412001,China [5]Guangzhou Metro Group Co.,Ltd.,Guangzhou 510330,China [6]the Zhuzhou CRRC Times Electric Co.,Ltd.and CRRC Zhuzhou Motor Co.,Ltd.,Zhuzhou 412001,China

出　　处：《CES Transactions on Electrical Machines and Systems》2023年第2期153-162,共10页中国电工技术学会电机与系统学报（英文）

基　　金：supported in part by the National Natural Science Foundation of China under Grants 52277050;the Shenzhen International Collaboration under Grant GJHZ20210705142539007。

摘　　要：With advantages of strong drive capability,nested-loop secondary linear machine(NLS-LM)has great potentiality in linear metro.For its secondary structure with multiple loops,it is difficult to calculate the electromagnetic thrust of NLS-LM reasonably.Hence,in this paper,one thrust calculation method is proposed considering variable loop inductance and transient loop current.Firstly,to establish the secondary winding function,the modeling domain is confined to a limited range,and the equivalent loop span is employed by analyzing the coupling relationship between primary and secondary.Then,in order to obtain the secondary flux density,the transient secondary current is solved based on the loop impedance and induced voltage.Finally,the electromagnetic thrust can be calculated reasonably by the given primary current sheet and the calculated secondary flux density.Comprehensive simulations and experiments have demonstrated the effectiveness of the proposed method.

关 键 词：Nested-loop secondary Linear metro Electro-magnetic thrust Finite element algorithm(FEA) Transient nested-loop current Winding function 

分 类 号：TM359.4[电气工程—电机] U231.8[交通运输工程—道路与铁道工程]