GRID-TIED POWER CONVERTER FOR BATTERY ENERGY STORAGE COMPOSED OF 2-STAGE DC-DC CONVERTER

摘要

The present invention relates to a charging and discharging power converter and, more particularly, to a grid-tied power converter for battery energy storage composed of a 2-stage DC-DC converter. The present invention is provided to solve the problem. The purpose of the present invention is to provide the grid-tied power converter for the battery energy storage composed of the 2-stage DC-DC converter formed by combining an LLC half-bridge resonant converter and a hybrid switching 2-phase chopper as a DC-DC converter inserted between an inverter and a battery.