Analytical design and modelling of power converters equipped with synthetic inertia control.

This paper deals with a design strategy for the provision of fast-response synthetic inertia services from a grid-connected converter interfaced to the low-voltage grid by means of a constant power control structure, like the one traditionally implemented for renewables generators. The novelty introduced lies in the inclusion of the external grid characteristics in the definition of the current-controlled inertia loop; this analytical approach allows to predict the stability of the dynamics associated to the grid itself and to the converter during inertia provision.