Research on Axial End Flux Leakage and Detent Force of Transverse Flux PM Linear Machine

Authors: W. R. Li, J. K. Xia, R. Q. Peng, Z. Y. Guo, L. Jiang

Abstract:

According to 3D magnetic circuit of the transverse flux PM linear machine, distribution law is presented, and analytical expression of axial end flux leakage is derived using numerical method. Maxwell stress tensor is used to solve detent force of mover. A 3D finite element model of the transverse flux PM machine is built to analyze the flux distribution and detent force. Experimental results of the prototype verified the validity of axial end flux leakage and detent force theoretical derivation, the research on axial end flux leakage and detent force provides a valuable reference to other types of linear machine.

Keywords: Transverse flux PM linear machine, flux distribution, axial end flux leakage, detent force.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1123941

References:

[1] Trung Kien Hoang, Do Hyun Kang, Ji Young Lee. Comparisons Between Various Designs of Transverse Flux Linear Motor in Terms of Thrust Force and Normal Force (J). IEEE Transactions on magnetics, 2010, 46(10):3795-3801.
[2] Ji Bin Zou, Qian Wang, Yong Xiang Xu. Influence of the Permanent Magnet Magnetization Length on the Performance of a Tubular Transverse Flux Permanent Magnet Linear Machine Used for Electromagnetic Launch (J). IEEE Transactions on plasma science, 2011, 39(1): 241-246.
[3] Yong Ming Xia, Qin Fen Lu, Yun Yue Ye, et al. Novel Flux Reversal Linear Oscillatory Motor with Two Divided Stators (J). Proceedings of the CSEE, 2007, 27(27): 104-107.
[4] Jia Kuan Xia, Cheng Yuan Wang, Hao Dong Li, et al. Study of End-Effects Analysis and NN Compensation Technique of Linear Motor for High Precision NC Machine (J). Proceedings of the CSEE, 2003, 23(8): 100-104.
[5] Kai Lin Pan, Jian Zhong Fu, ZiChen Chen. Detent Force Analysis and Reduction of PMLSM (J). Proceedings of the CSEE, 2004, 24(4): 112-115.
[6] Zhu Z Q, Xia Z P, Howe D, et al. Reduction of cogging force in slotless linear permanent magnet motors (J). IEE Proceedings Electric Power Applications, 1997, 144(4): 277-282.
[7] Yu Wu Zhu, Sang Gun Lee, Koon Seok Chung, et al. Investigation of Auxiliary Poles Design Criteria on Reduction of End Effect of Detent Force for PMLSM (J). IEEE Transactions on Magnetics, 2009, 45(6):2863-2866.
[8] Yue Tong Xu, Jian Zhong Fu, Zi Chen Chen. Thrust Ripple Optimization and Experiment for PMLSM (J). Proceedings of the CSEE, 2005, 25(12): 122-126.
[9] Qin Fen Lu, Yun Yue Ye. A Study on Characteristic of Moving Magnet Type Linear Oscillatory Motor (J). Proceedings of the CSEE, 2005, 25(19):135-139.
[10] Hao Wang, Zhi Jing Zhang, Cheng Ying Liu. Compensation Methods of Longitudinal End Effects in Permanent-magnet Linear Synchronous Motor (J). Proceedings of the CSEE, 2010, 30(15): 58-63.
[11] Bing Peng, Tie Fa Liu, Nan Zhang, et al. A Method for Reducing the End Effect Force Fluctuation by the Concave Profile End-tooth in Permanent Magnet Linear Motors (J). Transactions of China Electrotechnical Society. 2015, 30(7): 119-124.
[12] Ming Na Ma. Research on End Effects for Multi-Segment Permanent Magnet Linear Synchronous Motor (D). China: Harbin Institute of Technology, 2014.
[13] Wen Long Li, K. T Chau, Chun Hua Liu, et al. Analysis of Tooth-Tip Flux Leakage in Surface-Mounted Permanent Magnet Linear Vernier Machines (J). IEEE Transactions on Magnetics, 2013, 49(7):3949-3952.
[14] Qian Wang. Study on Electromagnetic Field and Electromagnetic Force of Tubular Transverse Flux Permanent Magnet Linear Machine (D). China: Harbin Institute of Technology: 2010.
[15] Alija Cosic, C. Sadarangani. Cogging Torque Calculations for a Novel Concept of a Transverse Flux Linear Free-Piston Generator. Proceedings of International Conference on Linear Drives and Industry Applications (C). Kobe-Awaji, Japan, 2005.
[16] W. M. Arshad, P. Thelin, C. Sadarangani, et al. Analytical Analysis and Dimensioning of a Low-Leakage Linear Transverse-Flux Machine (C). Proceedings of International Conference on Power Electronics, Machines and Drives. Edinburgh, UK, 2004: 414-419.
[17] Jia Kuan Xia, Wen Rui Li, Xin He, et al. Analysis of Anisotropic Permeate Leakage Flux on Transverse Flux Permanent Magnet Linear Machine (J). Transactions of China Electrotechnical Society. 2015, 30(14): 518-524.