Towards Plug-and-Play Converter-Interfaced DC Microgrids

This paper focuses on the development of plug-and-play voltage control mechanisms for DC microgrids with flexible structures. To this end, we present a voltage control approach that guarantees stable operation and satisfactory performance of DC microgrids under arbitrary interconnection of distributed generation (DG) units. The local voltage controllers are solutions of loop-shaping convex optimization problems. The proposed voltage control framework is applied to a case study of a multiple-DG DC microgrid in MATLAB/Simscape Electrical environment. The simulation results demonstrate the feasibility of the proposed voltage control approach and its viability for DC microgrids.