リニアモータカーにより発生するうず電流および磁気力に関する研究

抄録

There are many problems remaining in the new traffic system (linear motor car system) being investigated by the Railway Technical Research Institute. The eddy current problem, which is noted in iron bars, steel plates and fibers of guideway structures, is the most important one to be solved because energy loss due to eddy current is considered to be one of the key factors which influences costs of normal operation of a linear motor car. In this study, the eddy current and dynamically induced magnetic forces in a steel plate are analyzed by the three-dimensional finite-element method. The obtained eddy current data are transformed into Joule heat, and compared with the experimental data. It is then shown that the analytical results are in good agreement with the experimental data.