誘導型リニアモータ

概要

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A linear motor car for railway is required the three kinds of force, projectile, levitation and guide force. Author has manufactured an induction type linear motor for trial. A lot of small iron cores of shell type for single phase transformer are used. The cores are arranged in two rows bilaterally, and a concentrated winding is wound on each leg of core. That windings are connected with three phase system. A gap is provided between each leg of core and each yoke. As a secondary conductor, parts of leg of alminium channel are inserted into the gaps. A length of the alminium channel is the same as one pair pole length. Although the projectile force and the levitation force are acquired, but the guide force is not obtained. Therefore, small ball-bearings are used to avoid the deflection to right and left. According to speed up, the levitation force is decreased, therefore the shading coil is setted up positively to a part of each leg core to reinforce the levitation force. In this paper, the principle and the basic characteristics of this induction type linear motor are described.
山梨大学の論文