A synergetic control architecture for the integration of photovoltaic generation and battery energy storage in DC microgrids

A control strategy for the integration of photovoltaics (PV) and battery energy storage (BES) in a DC microgrid (mu G) is proposed. The method provides a unique control architecture for both islanding and grid-connected modes. Moreover, the method does not require the operating mode signal to detect the islanding or grid-connected operation of the mu G. Consequently, it alleviates switching between different sets of controllers, thus providing a smooth transfer between operation modes. A nonlinear control architecture based on a synergetic approach is used for the local control of the power converters. Simulation results are presented to show the system performance and to test the proposed control architecture for different operation scenarios. (C) 2019 Elsevier Ltd. All rights reserved.