磁気浮上式鉄道におけるき電系のインピーダンス周波数特性

概要

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The MAGLEV (magnetically levitated train) is now well along in development testing in Japan. The MAGLEV power source needs to supply a variable voltage and variable frequency source, and contains many higher harmonics, which causes many troubles such as inductive interference. Thus it is necessary to clarify the impedance frequency characteristics of the MAGLEV power feeding circuit. In view of this situation, experiments and investigations concerning the impedance frequency characteristics of the coils for propulsion and the power feeding circuit at the Miyazaki test track have been performed but a theoretical analysis had not been done.A theoretical analysis was therefore done in this paper by applying the inverted L equivalent circuit to the coil for propulsion, from which the characteristics of the coils for propulsion were analyzed.In addition the characteristics of the power feeding circuit could be clarified by assuming the equivalent circuit of the power feeder line.As a result, the measured values and calculated values were almost equal in both the characteristics of the coils for propulsion and those of the power feeding circuit.
社団法人電気学会の論文