I. Introduction
The ever increasing energy demand, fast depletion of fossil fuels, along with environmental concerns and the emergence of electricity market have attracted interest in large deployment of Renewable Energy Sources (RES). The concept of “Microgrid” is one of the solutions to integrate a mix of RES, which offers advantages of higher flexibility, controllability, efficiency of operation, and bidirectional power flow between utility grid and the microgrid under the grid connected mode of operation [1].