Measurement of electromagnetic waves emitted from partial discharge generated in PLG type-ground coil for superconducting Maglev

It is planned to start commercial service with Superconducting Magnetically Levitated Vehicle (Maglev) system between Tokyo and Nagoya (about 300km) in Japan in 2027. Combined propulsion, levitation and guidance (PLG) type-ground coil (PLG coil) has been developed in order to reduce the construction cost by reducing the number of ground coils. We measured the electromagnetic (EM) waves emitted from partial discharge (PD) generated in the PLG coil in order to develop the non-contact PD detection system for the PLG coils. This paper describes the measurement results of the EM waves emitted from PD generated in the PLG coil using UHF antennas and the location of PD by using the radio interferometer system.