POWER SUPPLY SYSTEM AND MOVING BODY

A power supply system includes: a variable voltage power supply that outputs power of a variable voltage E from a pair of secondary-side input/output terminals and ; a first power line and a second power line that connect the pair of secondary-side input/output terminals and and a load ; a first switch unit that is provided on the first power line ; a third power line that connects both ends of the first switch unit ; and a bypass line that connects the pair of secondary-side input/output terminals and , a first DC power supply is provided on the third power line to output DC power, and a bypass diode is provided on the bypass line to allow an output current of the first DC power supply