Fuzzy logic controller for parallel inverters in microgrids using virtual synchronous generator control

This paper presents an enhanced virtual synchronous generator (VSG) control with fuzzy logic controller (FLC) as a promising communication-less control method in a microgrid for its inertia support feature. The control strategies of microgrids are preferred to be in a communication-less manner because of its decentralized feature. Droop control is a widely-adopted communication-less control method in a microgrid. However, droop control provides barely any inertia support for the microgrid, thus a droop control based microgrid is usually inertia-less and sensitive to fault. To provide inertia support for the system, virtual synchronous generator (VSG) control schemes are proposed. This project presents an enhanced virtual synchronous generator (VSG) control method with fuzzy logic controller (FLC) with which oscillation damping is done based on increasing the virtual stator reactance and a communication-less approach is proposed based on inversed voltage droop control and common AC bus voltage estimation for accurate reactive power sharing.