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Levitation force assist through LSM armature currents in superconducting maglev vehicle
Author(s) -
Sakamoto Tetsuzo,
Kobayashi Toshihiro
Publication year - 2006
Publication title -
electrical engineering in japan
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.136
H-Index - 28
eISSN - 1520-6416
pISSN - 0424-7760
DOI - 10.1002/eej.20260
Subject(s) - maglev , levitation , armature (electrical engineering) , magnetic levitation , propulsion , electrodynamic suspension , engineering , spin stabilized magnetic levitation , mechanical engineering , aerospace engineering , physics , electrical engineering , magnet , magnetic field , magnetic energy , magnetization , quantum mechanics
In a superconducting maglev vehicle, levitation forces produced by the interaction between the ground levitation coils and the onboard SCMs become insufficient when the running speed is low. This paper presents a levitation force assist method through the control of LSM armature currents, which usually function to generate propulsion forces. The levitation assist system is constructed in terms of d‐axis armature currents, leading to the definition of the vertical force coefficient of propulsion system. The calculated results show the feasibility of the system, which produces damping forces as well as levitation assist forces. © 2006 Wiley Periodicals, Inc. Electr Eng Jpn, 155(4): 45–52, 2006; Published online in Wiley InterScience ( www.interscience.wiley.com ). DOI 10.1002/eej.20260