ENERGY MANAGEMENT OF A HYBRID MICRO-GRID WITH POWER ELECTRONIC CONVERTERS

The widespread interconnection of distributed generators (DGs) has created possibility of microgrid, both in AC and DC forms. Combining both AC and DC systems, hybrid microgrid has been proposed by many researchers. While a B2B connection between two AC systems could bestow are liable, isolated and efficient coupling, an extra DC bus connection can facilitate use of the DC micro sources. In this paper, a hybrid microgrid structure with DC bus connection at B2B converter is proposed. The main contribution of this paper lies in enabling this new hybrid structure for grid connected microgrid through B2B converters. Control voltage between the microgrid and utility provides a new model system for hybrid microgrid. Different control modes are developed to demonstrate the efficacy of the proposed microgrid structure and associated controls.