双边直线感应电机次级端部优化推力波动抑制

李天平; 史黎明; 殷正刚; 杨泽宇; 刘进海; 李耀华

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

doi: 10.3969/j.issn.0258-2724.20250362

李天平^{1, 2,},
史黎明^{1, 2, ,},
殷正刚^{1, 2},
杨泽宇^{1, 2},
刘进海¹,
李耀华^{1, 2}

1.
中国科学院电工研究所高密度电磁动力与系统全国重点实验室，北京 100190
2.
中国科学院大学，北京 100049

基金项目: 国家自然科学基金项目（52372367）

详细信息

作者简介:
李天平（1999—），男，博士研究生，研究方向为直线感应电机设计与分析，E-mail：litianping@mail.iee.ac.cn

通讯作者:
史黎明（1964—），男，研究员，博士生导师，研究方向为特种电机和驱动控制、高速磁悬浮电磁驱动、电能无线传输技术，E-mail：limings@mail.iee.ac.cn

中图分类号: TM359.4
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- 文章访问数: 44
- HTML全文浏览量: 52
- PDF下载量: 10
- 被引次数: 0
出版历程
- 收稿日期: 2025-07-11
- 录用日期: 2026-03-12
- 修回日期: 2025-12-17
- 网络出版日期: 2026-03-19

Thrust Ripple Suppression in Double-Sided Linear Induction Motors via Secondary End Optimization

LI Tianping^{1, 2
,},
SHI Liming^{1, 2
, ,},
YIN Zhenggang^{1, 2},
YANG Zeyu^{1, 2},
LIU Jinhai¹,
LI Yaohua^{1, 2}

1.
State Key Laboratory of High Density Electromagnetic Power and Systems, Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, China
2.
University of Chinese Academy of Sciences, Beijing 100049, China

摘要

摘要:
双边直线感应电机（DSLIM）推力波动引发的系统振动问题，在高速电磁推进、轨道交通和工业驱动等精确控制领域迫切需要解决. 本文深入研究双边直线感应电机次级结构，提出一种箭形次级设计方案，以减小DSLIM的推力波动. 首先，推导箭形次级的关键形状参数，建立包含平板次级、方形错位次级及箭形次级的DSLIM三维有限元模型，分析其推力输出特性；然后，对比不同次级结构涡流分布特征与分层推力分布特性，阐明箭形次级抑制推力波动的作用机理；最后，利用三维瞬态有限元模型，对比运动工况下优化前、后箭形次级结构的推力. 结果表明：优化后的箭形次级通过优化端部涡流路径改善次级导体利用率并提升推力波动抑制效果，在工作滑差附近区域，推力波动率可降至2%以内，相同质量下推力可达到21.51 kN，较方形错位次级提升1.03%.
- 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
Abstract:
The system vibration caused by thrust ripple in double-sided linear induction motors (DSLIMs) 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.
- linear motor /
- thrust ripple suppression /
- arrow-shaped secondary design /
- longitudinal dynamic end effect /
- finite element method

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图 1 长初级DSLIM基本模型

Figure 1. Basic model of long primary DSLIM

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图 2 方形错位次级结构示意

Figure 2. Schematic diagram of square-misaligned secondary structure

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图 3 错位次级端部分层拓展模型

Figure 3. Layered expansion model of misaligned secondary design at end

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图 4 箭形次级结构拓扑

Figure 4. Structure topology of arrow-shaped secondary design

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图 5 实物模型与三维有限元模型

Figure 5. Physical model and three-dimensional finite element model

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图 6 3种次级的稳态推力-滑差频率曲线

Figure 6. Steady-state thrust and slip frequency curves of three secondary structures

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图 7 不同滑差下的推力峰峰值与推力波动率

Figure 7. Peak-to-peak thrust values and thrust ripple rates under different slips

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图 8 涡流密度云图

Figure 8. Eddy current density contour map

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图 9 涡流矢量图

Figure 9. Vector diagram of eddy current

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图 10 次级分层瞬态推力对比

Figure 10. Comparison of secondary layered transient thrust

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图 11 优化箭形次级示意

Figure 11. Schematic diagram of optimized arrow-shaped secondary design

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图 12 优化箭形次级涡流分布

Figure 12. Eddy current distribution diagram of optimized arrow-shaped secondary design

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图 13 优化箭形次级推力特性

Figure 13. Thrust characteristics of optimized arrow-shaped secondary design

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图 14 两种箭形次级运动工况下的动态推力

Figure 14. Dynamic thrust of two arrow-shaped secondary designs under motion conditions

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表 1 长初级DSLIM结构参数

Table 1. Long primary DSLIM structural parameters

参数数值

τ/mm 170.4

铁芯轭高 h_c/mm 57

L_r/mm 1022.4

机械半气隙长度 g/mm 5

d/mm 3

L_ef/mm 180

L_e/mm 70

下载: 导出CSV

表 2 初级激励设置

Table 2. Excitation settings of primary design

激励设置幅值

额定电流有效值 I_m/A 800

滑差频率范围 f_e/Hz 3～10

初级相数/个 6

每极每相槽数/个 2

下载: 导出CSV

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参数	数值
τ/mm	170.4
铁芯轭高 h_c/mm	57
L_r/mm	1022.4
机械半气隙长度 g/mm	5
d/mm	3
L_ef/mm	180
L_e/mm	70

激励设置	幅值
额定电流有效值 I_m/A	800
滑差频率范围 f_e/Hz	3～10
初级相数/个	6
每极每相槽数/个	2

双边直线感应电机次级端部优化推力波动抑制

doi: 10.3969/j.issn.0258-2724.20250362

作者简介: 李天平（1999—），男，博士研究生，研究方向为直线感应电机设计与分析，E-mail：litianping@mail.iee.ac.cn

通讯作者: 史黎明（1964—），男，研究员，博士生导师，研究方向为特种电机和驱动控制、高速磁悬浮电磁驱动、电能无线传输技术，E-mail：limings@mail.iee.ac.cn

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出版历程

Thrust Ripple Suppression in Double-Sided Linear Induction Motors via Secondary End Optimization

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出版历程

目录

作者简介:
李天平（1999—），男，博士研究生，研究方向为直线感应电机设计与分析，E-mail：litianping@mail.iee.ac.cn

通讯作者:
史黎明（1964—），男，研究员，博士生导师，研究方向为特种电机和驱动控制、高速磁悬浮电磁驱动、电能无线传输技术，E-mail：limings@mail.iee.ac.cn