A novel tri?capacity battery charger topology for low?voltage DC residential nanogrid

This study communicates a single-stage, 3-?, rooftop solar photo voltaic (PV) and grid compatible tri-capacity battery charger (TBC) topology for home-based low voltage direct current nanogrid (LVDC NG). The proposed architecture performs power factor correction drawing sinusoidal currents at unity factor, single-stage rectification of 3-? voltages constant mode charging simultaneously. employed control scheme is experimentally validated on 120 W scaled-down hardware prototype energising three lead-acid-based energy storage system (BESS) nominal 48/36/24 V capacities 28/21/14 Ah, respectively. obtained results affirm the effective operation LVDC NG under islanded/grid-to-battery battery-to-grid modes. Further, an extension to work where TBC functions single BESS put forward adding merit work.