Train Power Converter Switching Surge Impact Studies

In this paper we address the issue of switching surges generated by power converters onboard a train impacting other trains and wayside equipment. We present two cases from both ac and a dc electrified railroad systems in Taiwan to manifest the seriousness of these surges if not properly mitigated. We conclude that this issue must be taken into consideration when commissioning new train power converters in a railroad system. Also corresponding standards need to be developed to ensure compatibility of new power converters with the existing trains and wayside equipment.