The increasing need to introduce more and more energy from renewable energy sources into the energy mix has brought with it numerous challenges to be solved within today’s electricity grid. A prominent challenge is that these new technologies, such as wind and solar photovoltaic power generation, connect to the grid mainly through power electronic converters. This has led to a growing concern about grid stability, particularly regarding the decrease in system iner- tia and the increase in the rate of change of frequency (RoCoF) following contingencies. As a result, there is an urgent need to find ways to maintain stability in compliance with the regula- tions in force in various countries.