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Levitation forces in single-sided linear induction motors for high-speed ground transport

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2 Author(s)
K. Yoshida ; Kyushu University, Fukuoka, Japan ; S. Nonaka

The levitation force and thrust in a current-controlled single-sided linear induction motor which propels electrodynamically-levitated vehicles are discussed. It has been shown theoretically that the single-sided linear induction motor (SLIM) can operate satisfactorily over suitably large clearance gap compared with the effective height of electrodynamic suspension. The levitation force in SLIM can be used practically as an alternative levitation force in the low-speed region by supplying a primary current several times the rated current within the very short acceleration times. In high-speed Maglev vehicle system with electrodynamic suspension and SLIM propulsion, the aluminum plate for levitation can be saved for the distance to accelerate the vehicle to speeds sufficient for electrodynamic levitation by the cryogenic magnets.

Published in:

IEEE Transactions on Magnetics  (Volume:11 ,  Issue: 6 )