Virtual Inertia

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Virtual Inertia

Compared to the conventional power systems with synchronous machines, the microgrids with distributed generators (DGs) have either very small or no inertia which is the main source of stability. A solution towards the microgrid stability enhancement is to provide virtual inertia, by using the concept of virtual synchronous generator (VSG). The VSG simulates the dynamic behavior of a SG represented by its fundamental swing equation to create virtual inertia. Unlike a real synchronous machine, the parameters of VSG can be controlled to enhance the dynamic response of the system.