西南交通大学学报2026，Vol.61Issue(4)：1171-1178,8.DOI:10.3969/j.issn.0258-2724.20250362
双边直线感应电机次级端部优化推力波动抑制
Thrust Ripple Suppression in Double-Sided Linear Induction Motors via Secondary End Optimization
摘要
Abstract
The system vibration caused by thrust ripple in double-sided linear induction motor(DSLIM)is an urgent problem to be solved in precision control fields such as high-speed electromagnetic propulsion,rail transit,and industrial drives.An in-depth study on the secondary structure of DSLIMs was conducted,and an arrow-shaped secondary design was proposed to reduce thrust ripple.First,the key shape parameters of the arrow-shaped secondary design were derived.Three-dimensional finite element models of DSLIMs incorporating flat,square-misaligned,and arrow-shaped secondary designs were established to analyze their thrust output characteristics.Then,the eddy current distribution features and layered thrust distribution characteristics of different secondary structures were compared to elucidate the mechanism of thrust ripple suppression by the arrow-shaped secondary design.Finally,the thrust of the arrow-shaped secondary structure before and after optimization under motion conditions was compared using a three-dimensional transient finite element model.The results indicate that the optimized arrow-shaped secondary design improves the utilization of secondary conductors and enhances the thrust ripple suppression effect by optimizing the eddy current path in the end regions.In the region near the operational slip,the thrust ripple rate can be reduced to below 2％,and the thrust under the same mass can reach 21.51 kN,representing an increase of 1.03％compared with the square-misaligned secondary design.关键词
直线电机/推力波动抑制/箭形次级/纵向动态端部效应/有限元方法Key words
linear motor/thrust ripple suppression/arrow-shaped secondary design/longitudinal dynamic end effect/finite element method分类
信息技术与安全科学引用本文复制引用
李天平,史黎明,殷正刚,杨泽宇,刘进海,李耀华..双边直线感应电机次级端部优化推力波动抑制[J].西南交通大学学报,2026,61(4):1171-1178,8.基金项目
国家自然科学基金项目(52372367) 中国科学院电工研究所青年基金(超声速高推重比新型直线感应电机研究,E52S320301). （52372367）
