A Power Rerouting Strategy in Electrical Microgrids Under Power Electronics Faults

Abstract

This paper presents a system-level fault tolerant method for microgrid inverters. It is applied by adding a controlled bidirectional switch between parallel inverters to allow for rerouting power during faults. The method is simulated and verified on PV inverters as well as grid-interfaced batteries. Results show that it is possible to recover significant amounts of curtailed power lost from distributed energy resources when their power electronics interfaces suffer from faults.