Power supply system

A power supply system, comprising:

• a power supply device;
• a power receive device;
• and
• a power cable connected between the power supply device and the power receive device, the power supply system supplying power to a load connected to the power receive device through the power cable, wherein
• the power receive device includes
• input detection means for detecting an input voltage or an input current inputted through the power cable, and
• power-receive side transmission means for transmitting the input voltage or the input current detected by the input detection means to the power supply device through the power cable as power-receive side information, and
• the power supply device includes
• power supply side receive means for receiving the power-receive side information through the power cable, and
• an output control circuit for controlling, on the basis of the power-receive side information received by the power supply side receive means, an output value of the output voltage or the output current to be outputted to the power cable so that the input voltage or the input current to be inputted to the power receive device is converged on a predetermined input setting value.