Consensus-Based Current Sharing and Voltage Balancing in DC Microgrids With Exponential Loads

In this work, we present a novel consensus-based secondary control scheme for current sharing and voltage balancing in dc microgrids (DCmGs), composed of distributed generation units (DGUs), dynamic RLC lines, nonlinear ZIE (constant impedance, constant current, exponential) loads. Situated atop primary layer, our controllers have structure utilize information exchanged over communication network to compute necessary actions. Besides showing that the desired objectives are always attained steady state, deduce sufficient conditions existence uniqueness an equilibrium point power loads--E loads with zero exponent. Our design hinges only on local parameters units, facilitating plug-and-play operations. We provide stability analysis illustrate performance robustness designs via simulations. All results hold arbitrary, albeit connected, mG topologies.