ELECTRIC POWER SUPPLY SYSTEM

An electric power supply system includes: a load; a first switch configured to connect a first electric power supply unit and the load to each other by a first route; a second switch configured to connect the first electric power supply unit and the load to each other by a second route; a third switch configured to connect a second electric power supply unit and the load to each other by a third route; a fourth switch configured to connect the second electric power supply unit and the load to each other by a fourth route; a first rectifying device provided in the second route and configured to carry out rectification from the first electric power supply unit toward the load; and a second rectifying device provided in the fourth route and configured to carry out rectification from the second electric power supply unit toward the load.