| 摘要 |
PROBLEM TO BE SOLVED: To provide a charging/discharging system capable of adjusting output voltage during discharge of a power storage device.SOLUTION: A charging/discharging system 1 performs a DC-AC conversion by a power conversion part 30 via a capacitive element 25 and an AC-DC conversion by a power conversion part 50 via a transformer 40, and supplies power to a power storage device 2 via a capacitive element 25 during a charge. While during a discharge, the system performs a DC-AC conversion by the power conversion part 50 and an AC-DC conversion by the power conversion part 30, and then extracts power from the power storage device 2 via the capacitive element 25. The charging/discharging system 1 further has a discharge auxiliary inductor element 70 and a charge auxiliary part 80 between the power conversion part 30 and the capacitive element 25. An auxiliary switching element 81 of the charge auxiliary part 80 is turned-on during charge, at least in the period when all full-bridge type switching elements in the power conversion part 30 are turned-off. |
