Why connect generators in parallel?1)Continuity of service
Sample DiagramTwo (2) shunt generatorsconnected in parallel.Method of Solution1)Graphical method–iftheexternalcharacteristicsaregiven(kW-rating,voltagerating,regulation,etc.)2)Circuit analysis–if theinternalcharacteristicsaregiven(Eg,resistances,etc.)
Sample Problem1)Two shunt generators A & Boperate in parallel and their load characteristic may be taken as straight line. The voltage of generator Afalls from 240V at no load to 220V at 200A, while that of Bfalls from 245V at no-load to 220V at 150A. Determine the current supplied by each machine to a common load of 300 A and the common bus bar voltageAns.