Fuzzy control based virtual synchronous generator for self-adaptative control in hybrid microgrid

Maintaining the stability of low-inertia microgrid becomes a key challenge in presence high penetration renewable energy sources. However, such systems, virtual inertia values are often fixed constants, and choice their will significantly affect frequency voltage microgrid. Higher oscillations may occur due to improper selection values. Therefore, inertia-based control has attracted lot attention. In this paper, an adaptive system using fuzzy is proposed by setting logic rules affiliation functions provide for ensure stability. strategy, automatically adjusted according signal deviation rate change actual system, avoiding inappropriate providing fast inertial response. Simulation experimental results show that algorithm, combining advantages large small inertia, enables effective improvement dynamic response both rectifier inverter modes. The effectiveness strategy verified.