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Levitation and propulsion for a magnetically levitated conveyance system using a two‐phase linear motor
Author(s) -
Ohashi Shunsuke
Publication year - 2008
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.20551
Subject(s) - propulsion , levitation , linear motor , magnetic levitation , thrust , engineering , electromagnetic coil , power (physics) , electrical engineering , electrically powered spacecraft propulsion , linear induction motor , electrodynamic suspension , magnetic core , mechanical engineering , aerospace engineering , automotive engineering , voltage , magnet , magnetic field , physics , induction motor , magnetic energy , magnetization , quantum mechanics
Magnetically levitated conveyance systems have been developed. Most consist of a levitation (and guidance) section and a thrust section. We have developed a conveyance system that realizes levitation and propulsion with a single facility using a two‐phase linear motor. In this system, the levitation and propulsion system are combined. The control method for the propulsion system to achieve more stability is discussed. To obtain the propulsion force, modulation of the voltage applied on the primary windings is undertaken. A traveling field is generated and applied to a carrier with a secondary iron core. The levitation force is produced by attraction between the flux generated by the primary windings and the secondary iron core. Because we need only electrical power for FET switching on the carrier side, no power supply system for the carrier is needed. Experimental results indicate that this system realizes contact‐less conveyance with various propulsion patterns. © 2008 Wiley Periodicals, Inc. Electr Eng Jpn, 165(3): 65–72, 2008; Published online in Wiley InterScience ( www.interscience.wiley.com ). DOI 10.1002/eej.20551