Bidirectional Power Sharing for DC Microgrid Enabled by Dual Active Bridge DC-DC Converter

Currently, high-performance power conversion requirements are of increasing interest in microgrid applications. In fact, isolated bidirectional dc-dc converters widely used modern dc distribution systems. The dual active bridge (DAB) converter is identified as one the most promising topology for mentioned applications, due to its benefits high density, electrical isolation, flow, zero-voltage switching, and symmetrical structure. This study presents a management control scheme order ensure balance stand-alone operation, where renewable energy source (RES) battery storage (BES) unit interfaced by DAB converters. algorithm, introduced this work, selects proper operation RES system BES system, based on load/generation state-of-charge conditions. Moreover, nonlinear robust strategy proposed when voltage-mode-control enhance dynamic performance robustness common dc-bus voltage, addition overcoming instability problems that caused constant loads interactions electronic simulation platform developed MATLAB/Simulink, photovoltaic selected typical BES, respectively. Assessments conducted. Comparisons with other method also provided.