volume | PIER Journals

Abstract

Double-Sided Flux Switching Permanent Magnet Linear (DLFSPM) motors are characterized by high efficiency and high power density, which are more and more widely used in various fields, so the design of high-performance linear flux-switching PM motors is of great significance to improving the efficiency of industrial applications. This study aims to achieve the improvement of electromagnetic thrust of double-sided flux switching permanent magnet linear motor by optimizing the motor core structure. First, a theoretical approach is used to construct the motor model and derive the electromagnetic thrust equation. Second, the finite element and Bessel curve fitting methods are used to optimize the core structure to enhance the electromagnetic thrust. Subsequently, the conductive bridge structure is increased to reduce the detent force and improve the performance. Then, the modular structure of primary iron core unit is proposed based on the above two optimizations. Finally, finite element simulation of the proposed optimized structure is carried out to compare the electromagnetic performance of the final comprehensively optimized DLFSPM motor with that of the motor of the initial structure. It is found that the average electromagnetic thrust is increased by 57.85%, and the amplitude of the detent force is reduced by 48.34%, which verifies the effectiveness of the optimization method.

1. Sun, Zhimin, Liang Xu, Wenxiang Zhao, and Kangkang Du, "Comparison between linear induction motor and linear primary permanent magnet vernier motor for railway transportation," 2021 13th International Symposium on Linear Drives for Industry Applications (LDIA), 1-6, Wuhan, China, Jul. 2021.

2. Liu, Xiao, Chunfu Hu, Xiongsong Li, Jian Gao, and Shoudao Huang, "An online data-driven multi-objective optimization of a permanent magnet linear synchronous motor," IEEE Transactions on Magnetics, Vol. 57, No. 7, 1-4, Jul. 2021.

3. Zhao, Wenxiang, Anqi Ma, Jinghua Ji, Xu Chen, and Tian Yao, "Multiobjective optimization of a double-side linear Vernier PM motor using response surface method and differential evolution," IEEE Transactions on Industrial Electronics, Vol. 67, No. 1, 80-90, Jan. 2020.

4. Zhang, Yichao, Jin Xu, Zhengqing Han, Zhenxing Wu, Chuibing Huang, and Mingke Li, "System-level optimization design of tubular permanent-magnet linear synchronous motor for electromagnetic emission," 2021 13th International Symposium on Linear Drives for Industry Applications (LDIA), 1-4, Wuhan, China, 2021.

5. Wang, Weitao, Jiwen Zhao, Yang Zhou, and Fei Dong, "New optimization design method for a double secondary linear motor based on R-DNN modeling method and MCS optimization algorithm," Chinese Journal of Electrical Engineering, Vol. 6, No. 3, 98-105, 2020.

6. Accetta, Angelo, Francesco Alonge, Maurizio Cirrincione, Filippo D’Ippolito, Marcello Pucci, and Antonino Sferlazza, "GA-based off-line parameter estimation of the induction motor model including magnetic saturation and iron losses," IEEE Open Journal of Industry Applications, Vol. 1, 135-147, 2020.

7. Dong, Fei, Jiwen Zhao, Juncai Song, Yinyi Feng, and Zhongyan He, "Optimal design of permanent magnet linear synchronous motors at multispeed based on particle swarm optimization combined with SN ratio method," IEEE Transactions on Energy Conversion, Vol. 33, No. 4, 1943-1954, 2018.

8. Wen, Cheng, Qiankai Zhao, Mingye Li, Jingna Liu, Mingwei Li, and Xingqiao Zhao, "Multi-objective optimization based on hyperparameter random forest regression for linear motor design," International Journal of Machine Learning and Cybernetics, Vol. 13, No. 10, 2929-2942, 2022.

9. Hu, Chunfu, Hesong Cui, Xiongsong Li, Xiao Liu, and Shoudao Huang, "Thrust characteristic improvement of permanent magnet linear synchronous motor based on multiobjective optimization," 2021 13th International Symposium on Linear Drives for Industry Applications (LDIA), 1-5, Wuhan, China, Jul. 2021.

10. Liu, Yansong, Xuzhen Huang, Jing Li, and Wei Yu, "Magnetic field analysis and thrust optimization of ARC permanent magnet synchronous motor combined with linear mover and ARC stator," IEEE Transactions on Industry Applications, Vol. 59, No. 5, 5867-5874, Sep.-Oct. 2023.

11. Wu, Siyue and Qinfen Lu, "Eddy current analysis and optimization design of the secondary of the linear induction motor with an approximation and prediction method," IEEE Transactions on Magnetics, Vol. 58, No. 2, 1-5, Feb. 2022.

12. Li, Chao, Zhiyong Lan, Bingbing Cai, and Qiuhui Zheng, "Vector control strategy of permanent magnet synchronous linear motor based on sliding mode speed controller and model reference adaptive," 2021 13th International Symposium on Linear Drives for Industry Applications (LDIA), 1-5, Wuhan, China, Jul. 2021.

13. Hu, Hengzai, Xiangdong Liu, Jing Zhao, and Youguang Guo, "Analysis and minimization of detent end force in linear permanent magnet synchronous machines," IEEE Transactions on Industrial Electronics, Vol. 65, No. 3, 2475-2486, 2018.

14. Nie, Lichao and Jin Fang, "Optimization of coreless high temperature superconducting linear synchronous motor," IEEE Transactions on Applied Superconductivity, Vol. 34, No. 8, 3603704, Nov. 2024.

15. Wu, Lize, Yanxin Li, Qinfen Lu, and Youtong Fang, "Detent-force analysis and reduction of modular permanent-magnet linear synchronous motors with non-overlapping windings," 2023 14th International Symposium on Linear Drivers for Industry Applications (LDIA), 1-5, Hannover, Germany, 2023.

16. Ji, Jinghua, Xuhui Zhu, Hongyu Tang, Liang Xu, and Wenxiang Zhao, "Design to improve thrust force performance of dual-side primary permanent-magnet vernier linear motor," Chinese Journal of Electrical Engineering, Vol. 9, No. 2, 1-13, Jun. 2023.

Professor Cheng Wen

Dr. Aosai Li

Professor Mingye Li

Dr. Wei Du

Dr. Shiming Bai

Dr. Xiangyu Meng