POWER SUPPLY SYSTEM AND METHOD FOR CONTROLLING SAME

摘要

A power supply system (20) that supplies electric power to a load (10) includes a first power storage device (100), a second power storage device (150), a power line (HPL) for transmitting electric power input and output to and from the load (10), a converter (110) for executing bidirectional DC voltage conversion between the first power storage device (100) and the power line (HPL), and a switch (RL1) connected between the second power storage device (150) and the power line (HPL). When the switch (RL1) is OFF, the control device (300) performs voltage control of the converter (110) so that a voltage value of the power line (HPL) becomes a voltage command value, and when the switch (RL1) is ON, the control device (300) performs current control of the converter (110) so that a current value of the first power storage device (100) becomes a current command value.