Toshiaki MURAI, Shunsuke FUJIWARA, Tsuyoshi FUJIMOTO, Kazuo SAWADA
In commercializing the superconducting maglev system it is important to reduce the cost, especially that of ground coils constructed along the whole length of the guideway. For this purpose we have examined the combined propulsion, levitation and guidance system (PLG system) which can generate propulsion, levitation and guidance forces by the same coils. The ground coils (PLG coils) and null-flux cables which are connected to the high voltage power supply, must be high voltage, say 22kV, especially, in applying to long trainsets like SHINKANSEN. In this paper, the concept of designing the high voltage PLG coils and results of testing to verify the insulation and mechanical performance of PLG coils and their connecting cables in trial are described.