电磁弹射用变极距直线电机电感参数分析  

Analysis of Inductance Parameters of Variable Pole Pitch Linear Motor for Electromagnetic Ejection

作　　者：刘希军 衡康 蔡骏 谭壹方 LIU Xi-jun;HENG Kang;CAI Jun;TAN Yi-fang(Institute of Electronic and Electrical Engineering,Civil Aviation Flight University of China, Guanghan 618307, China)

机构地区：[1]中国民用航空飞行学院航空电子电气学院,广汉618307

出　　处：《科学技术与工程》2022年第18期7930-7936,共7页Science Technology and Engineering

基　　金：四川省教育厅科技一般项目(18B0687);中国民用航空飞行学院面上项目(J2019-090)。

摘　　要：为了分析极距变化型直线电机的驱动特性,通过建模仿真方法研究了变极距直线感应电机绕组电感特性。设计极距变化型长初级短次级直线感应电机,永磁体次级位于双边初级中,通过连接装置连接待弹射物体,完成弹射加速任务。直线感应电机初级绕组线圈采用分段供电模式,提高电磁弹射过程能源利用率。仿真分析极距值对初级线圈绕组自感和互感参量影响。建立有限元仿真分析模型,分析极距变化型直线感应电机磁场情况。结果表明绕组自感值和互感值在高频区域趋向于恒定。可见增加电磁弹射频率有利于电磁弹射任务的完成,模型的分析为变极距直线感应电机运用奠定理论基础。In order to analyze the driving characteristics of the variable-pole-pitch linear motor,the winding inductance characteristics of the variable-pole-pitch linear induction motor were studied by modeling and simulation methods.Design the pole-pitch variable long primary and short secondary linear induction motor,the permanent magnet secondary was located in the bilateral primary,and the object to be ejected was connected through the connecting device to complete the ejection acceleration task.The primary winding coil of the linear induction motor adopts the segmented power supply mode to improve the energy utilization rate of the electromagnetic ejection process.The influence of the extreme distance value on the self-inductance and mutual inductance parameters of the primary coil winding was simulated and analyzed.A finite element simulation analysis model was establish to analyze the magnetic field of the linear induction motor with variable pole pitch.The results show that the self-inductance and mutual inductance of the winding tend to be constant in the high-frequency region.It can be seen that increasing the electromagnetic ejection frequency is beneficial to the completion of the electromagnetic ejection task,and the analysis of the model lays the theoretical foundation for the application of the variable-pole-pitch linear induction motor.

关 键 词：电磁弹射 变极距 气隙磁场 自感参数 互感参数 

分 类 号：TM359.4[电气工程—电机]