POWER CONVERSION DEVICE AND POWER STORAGE SYSTEM

Abstract

There is provided a power conversion device including: a non-isolated DC-DC converter provided between a battery and a DC bus to which one or more batteries are connected and a bus voltage is applied; and current limiting means which limits at least one of an input current to the non-isolated DC-DC converter or an output current from the non-isolated DC-DC converter, in which the non-isolated DC-DC converter performs an operation to convert a battery voltage of the battery to the bus voltage for outputting to the DC bus when the battery is discharged, and performs an operation to convert the bus voltage to the battery voltage for outputting to the battery when the battery is charged, and the current limiting means is connected between the non-isolated DC-DC converter and the battery, or between the non-isolated DC-DC converter and the DC bus.

CPC Classifications