Analytical Calculation of Braking Force of Super High Speed Maglev Eddy Current Device

被引：0
|
作者：
Zheng X. [1 ]
Xu J. [2 ]
Chen C. [1 ]
Wu X. [1 ]
机构：
[1] College of Electrical Engineering, Qingdao University, Qingdao
[2] National Key Laboratory of Science and Technology on Vessel Integrated Power System, Naval University of Engineering, Wuhan
来源：
Diangong Jishu Xuebao/Transactions of China Electrotechnical Society | 2020年 / 35卷 / 09期
关键词：
Analytic calculation; Eddy-current braking force; Finite-element simulation; Parametric analysis; Subdomain method; Super high speed maglev;
D O I：
10.19595/j.cnki.1000-6753.tces.190568
中图分类号：
学科分类号：
摘要：
The eddy-current braking system (ECBS) is vital to the safe operation of a high-speed maglev. This paper used the subdomain method for the analytic calculation of the expression of the eddy-current braking force that is related to parameters, such as speed (or super high speed), exciting current, air-gap length, induction plate thickness and conductivity. An analytical model was established in the 2-D coordinate system. With the magnetic vector potential as a variable, each subdomain of the model could be expressed by Poisson equations. In combination with the expression of air-gap flux density obtained according to the boundary condition between two adjacent subdomains, it is possible to derive the expression of eddy-current braking force. The results of finite-element simulation show that the analytic calculation is correct, and the feasibility of the ECBS to be used in the superhighspeed maglev is explored. The analytic calculation used for the parametric analysis of braking force is a good way of optimizing the superhighspeed ECBS. Compared with the simulation analysis, the analytic calculation can reflect the mechanism of eddy-current braking force and have the advantage of time-saving calculation. © 2020, Electrical Technology Press Co. Ltd. All right reserved.
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页码：1891 / 1899
页数：8
相关论文
共 24 条
  • [1] Zhang T., Liu X., Feng M., Et al., Modeling and control of magnetic suspension high-speed motor, Electric Machines and Control, 22, 4, pp. 98-104, (2018)
  • [2] Guo Q., Chen P., Luo T., Et al., Study on electromagnetic mechanism in eddy current brake (ECB) based on analytical method, Electric Drive for Locomotives, 1, pp. 30-32, (2006)
  • [3] Zhu X., Zhang X., Analysis and calculation of braking force on rail eddy current braking of high speed trains, Journal of Shanghai Teidao University: Natural Science, 4, pp. 1-8, (1996)
  • [4] Thompson M.T., Practical issues in the use of NdFeB permanent magnets in maglev, motors, bearings and eddy current brakes, Proceedings of the IEEE, 97, 11, pp. 1758-1767, (2009)
  • [5] Edwards J.D., Jayawant B.V., Dawson W.R.C., Et al., Permanent-magnet linear eddy-current brake with a nonmagnetic reaction plate, IEE Proceedings-Electric Power Applications, 146, 6, pp. 627-631, (1999)
  • [6] Yazdanpanah R., Mirsalim M., Axial-flux wound-excitation eddy-current brakes: analytical study and parametric modeling, IEEE Transactions on Magnetics, 50, 6, (2014)
  • [7] Kou B., Jin Y., Lu Z., Et al., Characteristic analysis and control of a hybrid excitation linear eddy current brake, Energies, 8, 7, pp. 7441-7464, (2015)
  • [8] Cho S., Liu H., Han W.A., Et al., Eddy current brake with a two-layer structure: calculation and characterization of braking performance, IEEE Transactions on Magnetics, 53, 11, (2017)
  • [9] Xue Z., Li H., Zhou Y., Et al., Analytical prediction and optimization of cogging torque in surface-mounted permanent magnet machines with modified particle swarm optimization, IEEE Transactions on Industrial Electronics, 64, 12, pp. 9795-9805, (2017)
  • [10] Zhou Y., Li H., Meng G., Et al., Analytical calculation of magnetic field and cogging torque in surface-mounted permanent-magnet machines accounting for any eccentric rotor shape, IEEE Transactions on Industrial Electronics, 62, 6, pp. 3438-3447, (2015)
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