| 摘要 |
Provided is a power source device that, as a power source device using a series multiple power conversion device and an electricity storage device, can reduce the storage battery cost compared to when all the same type of storage battery is used. The power source device has an AC-side connection terminal and a DC-side connection terminal to which the electricity storage device, which is capable of being charged with and discharging electrical power, is connected, is provided with a plurality of the power conversion devices, and can interconnect with an AC power supply system by electrically connecting, in series, each of the AC-side connection terminals of the plurality of power conversion devices. The power source device is characterized in that the plurality of power conversion devices are classified into at least two groups, the combination of cathode active material and anode active material in the electricity storage element embedded in the electricity storage device connected to the DC-side connection terminal of the power conversion devices configuring the groups is the same within the groups, and the combination of cathode active material and anode active material of the electricity storage element embedded in the electricity storage device differs between the groups. |
