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Maglev train systems require a high number of ground coils which are installed in the open over extended periods of time. Efficiency is therefore crucial for the maintenance of these ground coils in operation. When Maglev vehicles are running, a high voltage is applied to propulsion coils. Insulation diagnosis methods have been designed to detect partial discharge, which is a predictor of insulation failure in the propulsion coils [1], [2]. This paper describes the development of a partial discharge generation test specimen to evaluate insulation performance, and examination of electromagnetic wave propagation involved in partial discharges.

Insulation Diagnosis with a Focus on Partial Discharge of the Propulsion Coils of the Superconducting Maglev