Publication record · 18.cifr/2020.ghanbari.adaptive-droop-dc-microgrid

Adaptive Droop Control Method for Suppressing Circulating Currents in DC Microgrids

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Niloofar Ghanbari (North Carolina State University), Subhashish Bhattacharya (North Carolina State University)

RAI18.cifr/2020.ghanbari.adaptive-droop-dc-microgrid

IEEE Open Access Journal of Power and Energy· 2020· doi:10.1109/OAJPE.2020.2974940

Proposes an adaptive droop control method to suppress circulating currents among parallel DC-DC converters in DC microgrids. The method dynamically adjusts droop resistance based on measured circulating currents to achieve proportional load sharing and reduce bus voltage deviation.

DC microgridadaptive droop controlcirculating currentsparallel converterscurrent sharing

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Problem solved

Circulating currents among parallel DC-DC converters cause unequal loading and converter stress.
Static droop control forces a tradeoff between current sharing accuracy and bus voltage regulation.
Microgrid operators and converter designers need decentralized methods to balance load without central coordination.

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Droop resistance is dynamically adjusted in real-time using measured circulating current feedback.

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