Autonomous Power Management for Hybrid AC/DC Nano Grid Using ESS and DG

The increasing power demand with energy management is turning out to be an important aspect for electrical power system. Integration of Renewable Energy Source (RES) has indeed minimized the carbon emission and succeeded in delivering clean green energy. Power electronic converters are the major building block of power transmission and conversion at economical cost and also in reducing the design and installation of bulky electrical devices in remote zones, rural, congested place and consumers with few kilo watts of power. Designing a Nano Grid (NG) with less than 50kW of capacity will be benefit for the electrical distribution board. The proposed design discuss the design of Photo Voltaic (PV) with MPPT, DC/DC converter, single phase bidirectional Voltage Source Converter(VSC), Battery Energy Storage System (BESS) and three phase converter. The control technique for autonomous bidirectional power transfer to hybrid AC/DC NG with a simple PI controller. NG structure is simulated in Matlab/Simulink. This NG is equally adoptable for Pico Grids (PG), domestic and commercial consumers. It also features a load management strategy. The proposed work is reliable in upgrading to Micro Grid (MG) or integrating with MG with decentralized control scheme. This NG is plug and play type also suitable for Internet of Things (IoT) for various electrical farms and other applications.