POWER CONTROL DEVICE

A power control device for controlling a power supply system, the power control device including a DCDC converter for supplying power of a battery to a load, and an alternator connected in parallel with a DCDC converter for supplying generated power to the load, the power control device including: a monitoring unit for monitoring a current output from DCDC converter to the load; and a control unit for controlling an operation of DCDC converter and the alternator, wherein the control unit controls the alternator to generate electric power when an output current of DCDC converter monitored by the monitoring unit is equal to or greater than a first threshold value, and controls the alternator not to generate electric power when an output current of DCDC converter monitored by the monitoring unit is equal to or less than a second threshold value, which is smaller than the first threshold value.