The propulsion control system of railway vehicle

DC / AC converter, DC / DC converter, or the first power converter 16 which operates as an AC / DC converter, a second power converter 56, the first motor 17 and the first power converter a first control device 100 for controlling the operation of the vessel 16, and a second control unit 101 for controlling the second motor 57 and the second power converter 56, power storage device 24, the second connectable to the input and output ends A2 side, it is charged with the DC power supplied from the second output terminal A2 side, or DC power to discharge the DC power to the second output terminal A2 side to function as a supply source.