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In this paper, a double-quadrant state-of-charge (SoC)-based droop control method for distributed energy storage system is proposed to reach the proper power distribution in autonomous dc microgrids. In order to prolong the lifetime of the energy storage units (ESUs) and avoid the overuse of a certain unit, the SoC of each unit should be balanced and the injected/output power should be gradually equalized...
In this paper, a droop control based state-of-charge (SoC) balancing method in autonomous DC microgrids is proposed. Both charging and discharging process have been considered. In particular, in the charging process, the droop coefficient is set to be proportional to SoCn, and in the discharging process, the droop coefficient is set to be inversely proportional to SoCn. Since the injected/output power...
DC microgrid is an effective solution to integrate renewable energy sources with conventional utility grid, especially for photovoltaic generation. A DC microgrid configuration based on modular photovoltaic generation system and energy storage devices, which features good redundancy and high efficiency, is investigated in this paper. In order to optimize energy utilization, a power management scheme...
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