小半径軌道用磁気浮上車の支持案内兼用電磁石の電磁力特性

概要

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A magnetically levitated (MAGLEV) vehicle using electro-magnets and iron rails generates lateral guiding force naturally by controlling levitation force to maintain the air gaps between the magnets and the iron rails. A MAGLEV system without guide magnets offers simple design and cost advantages. But such a system has little lateral damping force. In order to improve damping characteristics, an experimental apparatus using salient-pole type magnets and laminated iron rails was made. The iron cores were placed in two rows. The levitation coils surrounded both of the magnet iron cores and the damping coils surrounded every magnet cores separately. The damping coils were excited by currents proportional to the lateral displacement velocity. According to a step response experiment, the lateral motion dissipated after a cycle or two of the swing. The self-inductance of the levitation coil of the magnet almost unchanged against variation of the lateral displacement. The influence of damping current on the levitation was very small. In this paper electromagnetic characteristics of the levitation system are shown.
社団法人電気学会の論文
2005-07-01