B. Eng., M. Eng. and Ph. D degrees in electrical engineering in 1988, 2000 and 2012 from Kyoto University; since 2000 engaged in Railway Technical Research Institute (RTRI) in Kokubunji city; currently Senior Researcher of Power Supply Technology Division, focus on fixed energy storage system for DC traction, protection system; participation in standardization committees of the IEC TC9 WG50.
Address: Railway Technical Research Institute (RTRI), 2-8-38, Hikaricho, Kokubunji-City, Tokyo, 185-8540, Japan