Voltage Scheduling Droop Control for State-of-Charge Balance of Distributed Energy Storage in DC Microgrids

Chendan Li, Tomislav Dragicevic, Nelson Leonardo Diaz Aldana, Juan Carlos Vasquez, Josep M. Guerrero

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Due to higher power quality, lower conversion loss, and more DC loads, there has been an increasing awareness on DC microgrid. Previous emphasis has been on equal power sharing among different units in the DC microgrid, while
overlooking the coordination of the energy storage units to maintain the State-of-Charge balance. In this paper, a new droop method based on voltage scheduling for State-of-Charge balance is proposed to keep the SoC balance for the energy storage units. The proposed method has the advantage of avoiding the stability problem existed in traditional methods based on droop gain
scheduling. Simulation experiment is taken in Matlab on a DC microgrid with two distributed energy storage units. The simulation results show that the proposed method has successfully achieved SoC balance during the load changes while
maintaining the DC bus voltage within the allowable range.
TitelProceedings of the 2014 IEEE International Energy Conference (ENERGYCON)
Antal sider5
ForlagIEEE Press
Publikationsdatomaj 2014
ISBN (Trykt)978-1-4799-2449-3
StatusUdgivet - maj 2014
Begivenhed2014 IEEE International Energy Conference (ENERGYCON) - Dubrovnik, Kroatien
Varighed: 13 maj 201416 maj 2014


Konference2014 IEEE International Energy Conference (ENERGYCON)
NavnI E E E International Energy Conference. ENERGYCON proceedings


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