Técnicas de controle aplicadas na unidade de interface de uma microgrid com o sistema elétrico de distribuição em um cenário de carga desbalanceada

Abstract

One contribution of this work is in organizing of information about structure, operation mode, possible control methods, and the protection levels required to connect the microgrid to the utility network. The step to push forward the frontiers of knowledge is the particular analysis of the power ows, in results for one unit constituted for distinct capacity inverters, that work with or without the utility network and provides energy for an unbalanced load. The main focus of this work was develop a interface unit for getting the distributed microgeneration resource to supply the local load and to connect the utility grid. For this, di erent converter topologies and control methods were analyzed. The droop control methods are investigated considering a complex line impedance and overcurrent protection control loop is proposed. Simulation and experimental results are shown in di erent operating conditions for demonstrating the ecacy of the solution.