Desenvolvimento de um conversor de interlink para microrredes híbridas c.a./c.c. utilizando uma abordagem multiobjetivo

Abstract

Hybrid microgrids are an excellent solution for implementing smart grids in conventional distribution networks. Making use of one or more interlink converters, responsible for managing the power flow between the a.c. and d.c. subnetworks, hybrid microgrids combine the advantages of both types of microgrids, allowing direct integration of ac-based networks. with d.c. resources; distributed generation, energy storage systems and loads, no need for synchronization, simple transformation and economic viability (Azeem et al. 2021). The present work aims to develop an optimized interlink converter. To this end, we sought to apply a multi-objective optimization method, adopting a project approach that allowed us to evaluate different performance criteria of the developed converter. The results showed that the method was able to provide support for decision-making during project development, taking into account the trade- off between cost, efficiency and life time of the converter. The control system applied was capable of managing the power flow between the d.c. buses. and a.c., in on grid operating mode, maintaining the d.c. bus voltage. stable and unity power factor on the ac side.