POWER CONTROL SYSTEM AND METHOD FOR PLURAL ENERGY STORAGE DEVICES

摘要

The present invention relates to a power control system and method for a plurality of energy storage devices, capable of reducing installation costs and a power loss by reducing the number of DC-DC converters, comprising: a first converter whose one end is connected to a first power system and the other end is connected to a DC link part to convert a voltage; a second converter whose one end is connected to a second power system and the other end is connected to the DC link part to convert a voltage; a first energy storage device storing electric energy; a DC-DC converter whose one end is connected to the first energy storage device and the other end is connected to the DC link part to convert a voltage; a second energy storage device connected to the DC link part to store electric energy; and a control device controlling the voltages of the first and second converters on the basis of a voltage of the second energy storage device.