Fault current source to ensure the fault level in inverter-dominated networks

This paper addresses the issue of ensuring the fault level in inverter-dominated islanded networks. This issue is particularly gaining significance with the advent of microgrids. It is proposed to add one component to the network which supplies the fault current when required and which keeps the network alive long enough for all inverters to resume operation, if they have switched off during the transient. This component is named a Fault Current Source (FCS).