Washout Filter-Based Power Sharing

Microgrid control practice has been dominated by droop control for over a decade. The main reason is that droop control can ensure voltage and frequency stability, and proper sharing of the load among distributed generation units without communication links. However, droop control causes undesirable voltage and frequency deviations. Using a dynamic feedback incorporating washout filters, this letter proposes a novel approach to perform power sharing without any communication links, and without compromising voltage and frequency regulation. Simulation results in PSCAD/EMTDC environment validate the performance of the proposed approach.