A Full Bridge-Based Fault Current Controller for Distributed Generation Systems

Nowadays the demand of electricity is continuously increasing which necessitates adding more distributed generators, causing the level of fault current to highly increase. The level of Fault Current (FC) could even exceed the ratings of the existing power system infrastructure, causing damage to the system components. Thus, a need exists to limit the FC levels. This paper is surveying different types of fault current limiters (FCLs), especially the solid state-based types shedding light on the design of a controllable single phase full bridge inverter type for low voltage distribution systems. Impedance and voltage-based approaches are proposed for controlling the FC levels. Simulation and experimental results are presented to elucidate the claimed contribution.