Solar PV Based Grid Scale Battery Energy Storage System with IBC and DAB

Successful grid operation requires to match supply with demand and flattening the uncertain load profile. Increased penetration of renewable energy sources at large scale is posing significant challenges to the grid operation due to their variability and intermittent nature. Grid scale battery energy storage (BESS) is considered as the best option to flatten the intermittency with faster response time and high ramp rate. In this paper solar PV based system is connected to the grid via interleaved boost converter (IBC) with voltage source inverter (VSI). The BESS is connected through dual active bridge (DAB) for energy storage and it supports the grid in the absence of enough grid supply. For power flow control across BESS a DAB has been used for bidirectional energy flow. The MATLAB/SIMULINK results depict the power flow, battery management, inverter control and grid support for 100 kW solar PV plant.