Finite-time frequency synchronization in microgrids

This paper proposes a finite time frequency controller that synchronizes the microgrid frequency to the nominal frequency and shares the active power among distributed generators (DG) based on their active power ratings. The finite-time control accelerates the synchronization speed and provides the synchronization for microgrid frequency and DG active powers in a finite period of time. In addition, the proposed control is distributed; i.e., each DG only requires its own information and the information of its neighbors on the communication network graph. The efficacy of the proposed finite-time frequency control subsequent to islanding process and load changes is verified for an islanded microgrid test system.