Voltage Regulation and Current Sharing in DC Microgrids with different Information Scenarios

Alessio Iovine (1, 2) , Miguel Jiménez Carrizosa (3) , Elena de Santis (4) , Maria Domenica Di Benedetto (4) , Pierdomenico Pepe (4) , Alberto Sangiovanni-Vincentelli (2)

1 L2S - Laboratoire des signaux et systèmes
2 EECS - Department of Electrical Engineering and Computer Science [Berkeley]
3 UPM - Universidad Politécnica de Madrid
4 UNIVAQ - University of L'Aquila [Italy]

We present a general framework for the control of a Direct Current (DC) microgrid with star topology (a common DC bus) consisting of renewable sources of energy, loads and storage devices connected via step-up and step-down DC/DC converters. The control objective is guaranteeing voltage stability in the DC microgrid while delivering power to the loads and extracting energy efficiently from renewable sources. To verify grid voltage regulation among a number of devices via current sharing, we use a Lyapunov-based Input-to-State Stability (ISS) analysis. We consider three control scenarios: distributed, partially distributed and decentralized according to the amount of information available to the controllers.

Keywords: DC microgrid; Voltage regulation; Current sharing; Nonlinear Control; Lyapunov methods; Large-signal stability analysis; Input-to-State Stability; Backstepping; Renewables; Storage devices; DC/DC converter

Domains: Optimization and Control [math.OC]; Automatic; Electric power

Alessio Iovine, Miguel Jiménez Carrizosa, Elena de Santis, Maria Domenica Di Benedetto, Pierdomenico Pepe, et al.. Voltage Regulation and Current Sharing in DC Microgrids with different Information Scenarios. IEEE Transactions on Control Systems Technology, 2022, ⟨10.1109/TCST.2021.3126063⟩. ⟨hal-03452137⟩