POWER SUPPLY SYSTEM, MOVING OBJECT INCLUDING POWER SUPPLY SYSTEM, AND CONTROL METHOD OF POWER SUPPLY SYSTEM

When the supply of electric power from a first power generation device to a first power supply circuit is cut off, a control device causes electric power to be supplied from a second power generation device to between the first power generation device and a contactor device via a precharge circuit and the contactor device, determines whether or not a short circuit has occurred between the first power generation device and the contactor device, and thereafter connects the first power supply circuit and a second power supply circuit to each other.