Optimization and control of coordinated power flow in ac and dc hybrid micro grids

Abstract

newline Micro Grids have been in focus of recent scientific research as a potential replacement for current energy system outlooks. Micro Grids are being considered as a potential solution for integrating various RES into the standard grid. AC-DC hybrid MG includes DC and AC buses connected with Distributed generators, energy storage systems and load. The presence of several interleaved converters in the microgrid complicates the control operation and generates circulating currents which lowers the available current capacity of the Inter Linking Converters (ILCs). Hence a single ILC topology has been employed as an interface between DC and AC subgrids, which is the most attractive solution for a paradigm of future smart grids. It is also essential to optimize the control parameters of the controller in order to improve the reliability of the system. An effort has been made in the present research work to optimize AC-DC hybrid MG using two methods and compared with various algorithms.