Toward adaptive control power sharing and bus voltage regulation for DC microgrids

Decentralized control for the DC microgrid has made extensive use of droop-based control. But correct power sharing and necessary voltage management are both impossible with traditional droop control, which results in circulating current. A novel adaptive control method that achieves precise power sharing and suitable voltage regulation based on the loading condition is presented in this paper for multiple converter DC microgrid applications. Since the output currents of the distributed power sharing units are far lower than the top limits, the accuracy of the power sharing procedure is not a problem under light load conditions. Because the output currents of the scattered producing units increase in proportion to the load, precise current sharing is required during high load situations. As the load level rises, the recommended control strategy improves the equivalent droop gains and offers precise current sharing. The innovative and novel adaptive droop controller has reduced the variance in load current sharing by utilizing the principal current sharing loops to update the droop settings and verifying them exist. To eliminate the bus voltage fluctuation in the DC microgrids, the second loop also shifted the droop lines. A variety of input voltages and load resistances are used to test the proposed method. The performance and stability of the suggested approach are assessed in this work using a linearized model, and the findings are confirmed using a suitable model created in MATLAB/SIMULINK and with the principles of real-time simulation.