Firefly algorithm-based voltage and frequency control of a hybrid AC-DC microgrid

In this paper, an islanded microgrid with the hybrid AC and DC buses is studied. The voltage and frequency control of the AC or/and DC bus are one of the most important issues in all microgrids. Therefore, control schemes, used in this study, are developed in order to improve the voltage and frequncy stability of the proposed microgrid. Furthermore, a firefly optimization algorithm (FOA) solution is proposed to optimize the various controller parameters. The achieved results verify the controllers´ robustness and optimization algorithm efficiency under the uncertainties existed in microgrid.