Virtual Synchronous Generators for microgrid stabilization : Modeling, implementation and experimental validation on a microgrid laboratory

Microgrids with a high share of renewables may become the keystone of the new energy transition. With the present inverters interfacing the various DERs (Distributed Energy Resources) to microgrids, the stability of such power systems is threatened if the share of renewables increases. In this paper a robust solution to solve this problem is presented. The proposed solution is based on the concept of Virtual Synchronous Generator (VSG) for inverter control that was enhanced to consider various practical aspects leading to a robust inverter brick facing all the critical microgrid situations. Experimental results conducted on a microgrid laboratory are also presented to let the reader assess the performances of the proposed solution.