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An Innovative Adaptive Droop Control Based on Available Energy for DC Micro Distribution Grids

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  • Duc Nguyen Huu

    (Department of Renewable Energy, Faculty of Energy Technology, Electric Power University, 235—Hoang Quoc Viet, Hanoi 11355, Vietnam)

Abstract

DC distribution grids are increasingly a promising solution for wind and solar integration due to good matching with DC output voltage such as photovoltaic (PV) array systems, distributed battery storage systems (BESS) and electric vehicles. To overcome the control problems involving coordination control schemes of multi-BESSs in real-time as well as operation strategies of DC grids in the long-term, this paper presents the effective adaptive coordinated droop control of multi-battery energy storage systems (MBESSs) in DC distribution grids. The adaptive coordinated droop is proposed according to the available energy levels in BESSs. With the proposed method, the dual-objectives, which are stabilization of DC voltages especially through disturbance for instance outage of BESS and enhancement of State of Charge (SOC)-balance speed among BESSs, can be achieved. Analytical derivations are established to investigate the impacts of the adaptive method. Meanwhile, the influence of the proposed method on the stability is presented.

Suggested Citation

  • Duc Nguyen Huu, 2020. "An Innovative Adaptive Droop Control Based on Available Energy for DC Micro Distribution Grids," Energies, MDPI, vol. 13(11), pages 1-24, June.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:11:p:2983-:d:369569
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    Cited by:

    1. José Luis Torres-Madroñero & Joham Alvarez-Montoya & Daniel Restrepo-Montoya & Jorge Mario Tamayo-Avendaño & César Nieto-Londoño & Julián Sierra-Pérez, 2020. "Technological and Operational Aspects That Limit Small Wind Turbines Performance," Energies, MDPI, vol. 13(22), pages 1-39, November.

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