Hitachi, Ltd.

Hitachi Rail Limited

Koji Agatsuma

Takeshi Shima

Takeshi Watanabe

Satoru Inarida

Kento Mochizuki

Atsushi Yamagoshi

Yuta Oura

Mitsuo Iwasaki

A system corresponding to a plurality of different power sources (overhead contact line, power generator driven by engine, and fuel cells) is proposed as a method of using an optimum power supply in an electrified route and a non-electrified route. Provided are: a power conversion circuit that includes AC input ends, the number of which corresponds to the maximum number of phases among a plurality of different AC power supplies, and that converts AC power to a direct current; and switching means for switching a connection state of the AC power supplies and the power conversion circuit, wherein the connection state is switched according to the power supplies.

Driving system, driving system for railroad-vehicle, and railroad-vehicle and multi-car train mounted with same

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London, United Kingdom

Koji Agatsuma