A holistic model-less approach for the optimal real-time control of power electronics-dominated AC microgrids

This paper addresses the problem of optimally operating a set grid-forming devices in an AC microgrid when detailed network model is not available. The main aim approach to maximize power sharing controllable and maintain frequency nodal voltages as close possible their corresponding references. proposed control architecture conformed by local layer each device that intends emulate performance synchronous machine centralized secondary controller composed two complementary tools coordinates setpoints devices: online feedback optimization algorithm automatic generation control. method has been validated through simulations hardware-in-the-loop tests, evidencing its good robustness under different conditions.