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Design of an Electromagnet with Low Detent Force and its Control for a Maglev Super-speed Vehicle
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 Title & Authors
Design of an Electromagnet with Low Detent Force and its Control for a Maglev Super-speed Vehicle
Lim, Jaewon; Kim, C.H.; Han, J.B.; Han, H.S.;
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The vibration and noise caused by the dynamic interaction between electromagnetic suspension and the linear synchronous motor stator beneath a flexible guideway remain problems in designing attractive Maglev trains. One possible method to reduce the sources of vibration is to minimize the detent force in the linear synchronous motor that creates variations in both lift force and thrust. This paper proposes lowering detent force by using separated core instead of single united core. The magnet is designed to adapt to the deflected guideway at a speed of 550km/h. This study will analyze the electromagnetic field and control performance, and how they relate to lift forces and dynamic responses.
Detent force;Linear synchronous motor;Maglev;Pole arrangement;Vibration;
 Cited by
Peter Becker, Juergen Frantzheld, Friedrich Loeser and Qinghua Zheng, “Transrapid – Proven Solution Meeting Current and Future Transport Needs,” in Proceedings of Maglev 2014 Conference, Rio de Janeiro, Brazil, September 2014.

Danfeng Zhou, Colin H. Hansen, Jie Li and Wensen Chang, “Review of Coupled Vibration Problems in EMS Maglev Vehicles,” International Journal of Acoustics and Vibration, vol. 15, no. 1, pp. 10-22, Feb. 2010.

Z.Q. Zhu and David Howe, “Influence of Design Parameters on Cogging Torque in Permanent Magnet Machines,” IEEE Trans. Energy Conversion, vol. 15, no. 4, pp. 407-412, December, 2000. crossref(new window)

H.W. Cho, H.S. Han, J.M. Lee, B.S. Kim and S.Y. Sung, “Design considerations of EM-PM hybrid levitation and propulsion device for magnetically levitated vehicle,” IEEE Trans. Magnetics, vol. 45, no. 10, pp. 4632-4635, 2009. crossref(new window)

H.S. Han, B.H. Yim, N.J. Lee, Y.C. Hur and S.S. Kim, “Effect of Guideway’s Vibrational Characterisitcs on Dynamics of a Maglev Vehicle,” Vehicle System Dynamics, vol. 47, no. 3, pp. 309-324, 2009. crossref(new window)