Regenerative braking emergency stop system

A regenerative braking emergency stop system comprising:

• a substation;
• a power-feed rail fed with power from the substation;
• a running rail;
• and an electric vehicle configured to collect power from the power-feed rail and run on the running rail, the substation including:
• a rectifier transformer configured to transform AC power received from outside;
• a rectifier configured to convert the AC power transformed by the rectifier transformer into DC power;
• and a switch disposed on an electrical path between the rectifier and the power-feed rail and configured to be in a closed state or an opened state, the electric vehicle including a power collector configured to collect power from the power-feed rail, wherein
• the substation includes:
• a plurality of power-feeding systems each including the rectifier transformer, the rectifier, and the switch;
• a simulated ripple transmitter configured to transmit a simulated ripple, the simulated ripple being an AC signal having a predetermined frequency;
• and
• a superimposing circuit configured to superimpose the simulated ripple transmitted from the simulated ripple transmitter on DC power outputted from the rectifier,
• the simulated ripple transmitter and the superimposing circuit are connected parallel to the rectifier,
• the simulated ripple transmitter includes:
• a rectifier transformer configured to transform AC power received from a power receiving line, from which the substation receives AC power;
• a rectifier configured to convert the AC power transformed by the rectifier transformer into DC power;
• and
• a transformer configured to extract a simulated ripple superimposed on the DC power converted by the rectifier,
• the superimposing circuit includes a DC-blocking capacitor disposed between an output terminal of the simulated ripple transmitter and the power-feed rail, and
• the electric vehicle further includes:
• a simulated ripple receiver configured to detect the simulated ripple from DC power collected by the power collector;
• and
• a controller configured to perform control to stop regenerative braking of the electric vehicle when having detected that the simulated ripple to be detected by the simulated ripple receiver has disappeared.