PIER M
 
Progress In Electromagnetics Research M
ISSN: 1937-8726
Home | Search | Notification | Authors | Submission | PIERS Home | EM Academy
Home > Vol. 61 > pp. 61-73

DESIGN OF DOUBLE-SIDED LINEAR PERMANENT MAGNET EDDY CURRENT BRAKING SYSTEM

By Q. Chen, Y. Tan, G. Li, J. Li, and I. M. Y. Mareels

Full Article PDF (1,944 KB)

Abstract:
This work tries to design an Eddy current braking system that can brake at a very high speed within a short time or a short distance. In order to maximize the braking force and reduce lateral forces that can cause track deformation or damage, a double-sided linear permanent magnet Halbach array is proposed in this paper. Two possible designs (Type I and Type II) have been investigated. By using mathematic models, Finite Element Method (FEM) and experimental results, Type I design of a double-sided linear permanent magnet Halbach array is selected. Compared with the other design, Type I design can provide a much larger braking force. Moreover, the analysis also shows that the mathematic models can well capture the characteristic of Type I design. Thus these models are used to design a set of optimal design parameters such as the length and thickness of permanent magnet block to maximize flux density and braking force per unit mass of permanent magnets. The optimal performance is validated by using FEM.

Citation:
Q. Chen, Y. Tan, G. Li, J. Li, and I. M. Y. Mareels, "Design of Double-Sided Linear Permanent Magnet Eddy Current Braking System," Progress In Electromagnetics Research M, Vol. 61, 61-73, 2017.
doi:10.2528/PIERM17071804

References:
1. Perry, C. E., "Vertical impact tests of a proposed B-52 ejection seat cushion,", Human Effectiveness Directorate Wright-Patterson AFB OH 711 Human Performance Wing, 2007.
doi:10.3233/JAE-140019

2. Brinkley, J. W., et al., "Evaluation of a proposed F-4 ejection seat cushion by +Gz impact tests,", Armstrons LabWright-Patterson AFB OH Crew Systems Directorte, 1993.
doi:10.1109/JPROC.2009.2030231

3. Turnbull, D., et al., "Soft sled test capability at the holloman high speed test track,", US Air Force T&E Days 1708, 2010.

4. Yazdanpanah, R. and M. Mirsalim, "Analytical study of axial-flux hybrid excitation eddy current brakes," International Journal of Applied Electromagnetics and Mechanics, Vol. 47, No. 4, 885-896, 2015.
doi:10.1143/JJAP.26.785

5. Thompson, M. T., "Practical issues in the use of NdFeB permanent magnets in maglev, motors, bearings, and eddy current brakes," Proceedings of the IEEE, Vol. 97, No. 11, 1758-1767, 2009.
doi:10.1063/1.335021

6. Wu, J., et al., "Hybrid brake method for electromagnetic launcher of unmanned aerial vehicle," Journal of National University of Defense Technology, Vol. 5, 010, 2015.
doi:10.1109/20.951256

7. Sagawa, M., et al., "NdFeB permanent magnet materials," Japanese Journal of Applied Physics, Vol. 26, No. 6R, 785, 1987.
doi:10.1109/TMAG.2002.803191

8. Halbach, K., "Application of permanent magnets in accelerators and electron storage rings," Journal of Applied Physics, Vol. 57, No. 8, 3605-3608, 1985.

9. Jang, S. M., S. S. Jeong, and S. D. Cha, "The application of linear Halbach array to eddy current rail brake system," IEEE Transactions on Magnetics, Vol. 37, No. 4, 2627-2629, 2001.
doi:10.1109/61.924821

10. Jang, S. M., S. H. Lee, and S. S. Jeong, "Characteristic analysis of eddy-current brake system using the linear Halbach array," IEEE Transactions on Magnetics, Vol. 38, No. 5, 2994-2996, 2002.

11. Wang, J. B., Y. H. Li, and L. G. Yan, "Study on applying the linear Halbach array to eddy current brake system," International Journal of Applied Electromagnetics and Mechanics, Vol. 33, No. 1, 111-118, 2010.

12. Wang, H. and K. L. Butler, "Finite element analysis of internal winding faults in distribution transformers," IEEE Transactions on Power Delivery, Vol. 16, No. 3, 422-428, 2001.
doi:10.1109/77.828377

13. Ansoft Corporation, , Maxwell Software, Elmwood Park, Ansoft Corporation, NJ, 1998.
doi:10.1109/TASC.2002.1018551

14. Post, R. F., "Inductrack demonstration model,", Lawrence Livermore National Lab., CA (United States), 1998.

15. Post, R. F. and D. D. Ryutov, "The inductrack: A simpler approach to magnetic levitation," IEEE Transactions on Applied Superconductivity, Vol. 10, No. 1, 901-904, 2000.

16. Kratz, R. and R. F. Post, "A null-current electro-dynamic levitation system," IEEE Transactions on Applied Superconductivity, Vol. 12, No. 1, 930-932, 2002.
doi:10.1109/20.877618

17. Post, R. F. and D. Ryutov, "The inductrack concept: A new approach to magnetic levitation,", Lawrence Livermore National Lab., CA (United States), 1996.
doi:10.1049/ip-epa:20045059

18. Gurol, S., et al., "Status of the general atomics low speed urban maglev technology development program,", Lawrence Livermore National Laboratory (LLNL), Livermore, CA, 2004.
doi:10.1109/20.996161

19. Davey, K., "Optimization shows Halbach arrays to be non-ideal for induction devices," IEEE Transactions on Magnetics, Vol. 36, No. 4, 1035-1038, 2000.

20. Han, Q., C. Ham, and R. Phillips, "Four- and eight-piece Halbach array analysis and geometry optimisation for maglev," IEE Proceedings - Electric Power Applications, Vol. 152, No. 3, 535-542, 2005.

21. Jafari-Shapoorabadi, R., A. Konrad, and A. N. Sinclair, "Comparison of three formulations for eddy-current and skin effect problems," IEEE Transactions on Magnetics, Vol. 38, No. 2, 617-620, 2002.


© Copyright 2010 EMW Publishing. All Rights Reserved