Performance and control of converter interfaced distribution resources

Distributed resources are finding increased penetration in developing countries like India. The increased acceptance of such resources is mainly due to their modularity, increased reliability, good power quality and environment friendly operation. These are currently being interfaced to the existing systems using voltage source inverters (VSC's). The control of such distributed resources is significantly different than the conventional power systems mainly because the VSC's have no inertia unlike the synchronous generators. This paper deals with the modeling and control aspects of several distributed sources connected in parallel and feeding a common load. The analysis is carried out for active and reactive power sharing of the load. The developed control scheme is tested for linear (R-L) load.