ELECTRIC POWER CONTROL DEVICE

The electric power control device includes N pieces of DC/DC converters provided corresponding to N pieces of power sources, a DC wiring connected in common to output terminals of the N pieces of DC/DC converters, a load connection unit connected to the DC wiring, and a power control unit connected to the N pieces of DC/DC converters. The power control unit sets an output voltage set value of at least one of the N pieces of DC/DC converters to a value different from output voltage set values of the other DC/DC converters, thereby supplying output power of one or more of the DC/DC converters to the power load unit with priority in decreasing order of the output voltage set values.