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

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