%0 Journal Article
%T Analysis of the influence of magnetic stiffness on running stability in a high
%A Chang-Young Lee
%A Jaeheon Choe
%A Jeong-Min Jo
%A Jin-Ho Lee
%A Jungyoul Lim
%A Kwan-Sup Lee
%A Yan Sun
%J Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit
%@ 2041-3017
%D 2019
%R 10.1177/0954409718785296
%X There are two major obstacles that prevent a conventional train from achieving high speed: the limitation of wheel¨Crail adhesion and the increase of instability in the wheel¨Crail running dynamics. To overcome these problems, a new hybrid train model is introduced in this study. This train utilizes a superconducting linear synchronous motor (SC-LSM), instead of a traction motor, for propulsion; therefore, this train does not have the limitation of adhesion between the wheel and the rail. Using an SC-LSM also improves the stability of the train during high-speed operations. The magnetic stiffness between the train and the guideway is additionally generated by using the SC-LSM, which is favorable for the running stability at a high speed. This study focuses on the magnetic stiffness and its effect on the running stability in the proposed hybrid train model. First, the magnetic stiffness in the SC-LSM is investigated both theoretically and experimentally. Then, a train dynamic model including the magnetic stiffness is developed and the effect of magnetic stiffness on the running stability is analyzed through various simulations
%K High-speed train
%K running stability
%K magnetic stiffness
%K superconducting linear synchronous motor
%K dynamic analysis
%U https://journals.sagepub.com/doi/full/10.1177/0954409718785296