To supply a regenerative power, which is generated in a motor by regenerative braking during running in an overhead section, without using a DC/DC converter, to a storage battery.
A vehicle system includes a switch 12 provided between a current collector 11 and a parallel circuit, a switch 22 which is located between the storage battery 21 and the motor 31, and provided at a position between the current collector 11 and the storage battery 21, and an amplifier 23 which is provided in parallel with the switch 22 between the storage battery 21 and the motor 31 and permits a current flowing from the current collector 11 and the motor 31 to the storage battery 21 to regulate the current flowing from the storage battery 21 to the current collector 11 and the motor 31.
MITSUTAKE MASAYA
KAWAHARA IKUO
Masatake Shiga
Tadashi Takahashi
Tetsuo Yamazaki