Droop Control of Proportional Resonant controller Fed Hybrid Distrubuted Generator in Low voltage AC Microgrid

Power flow control is vital in microgrids whether it is AC or DC microgrid. Many Droop control techniques are used to efficiently control the power injected by DGs (distributed generators) in a decentralized manner. Residential low rating microgrids are eventually increasing which are hybrid in nature and need to control the power injected to a grid in grid-connected and to meet power balance in Islanded modes. A modified current based power point tracking is proposed in this paper to improve transient behavior of DC side parameters thus improves DC bus voltage regulation and Proportional resonant control is introduced which is responsible to control the active and reactive power flow simultaneously from inputs given by droop controller. The same reference is used to extend the droop control strategy in a grid-connected case also with necessary modifications.