In this paper, a novel distributed control strategy achieving (feasible) current sharing and voltage regulation in Direct Current (DC) microgrids is proposed. Firstly, the (convex) optimization problem is formulated, with the microgrid's steady state equations and/or desired objectives as feasible set. Secondly, we design a controller, the (unforced) dynamics of which represent the continuous time primal-dual dynamics of the considered optimization problem. Then, a passive inter-connection between the physical plant and the controller is presented. Furthermore, global asymptotic convergence of the closed-loop system to the desired steady-state is proved and simulations successfully confirm the theoretical results.
Distributed control of DC microgrids using primal-dual dynamics
Cucuzzella, M;
2019-01-01
Abstract
In this paper, a novel distributed control strategy achieving (feasible) current sharing and voltage regulation in Direct Current (DC) microgrids is proposed. Firstly, the (convex) optimization problem is formulated, with the microgrid's steady state equations and/or desired objectives as feasible set. Secondly, we design a controller, the (unforced) dynamics of which represent the continuous time primal-dual dynamics of the considered optimization problem. Then, a passive inter-connection between the physical plant and the controller is presented. Furthermore, global asymptotic convergence of the closed-loop system to the desired steady-state is proved and simulations successfully confirm the theoretical results.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
