Performance analysis of three phase induction generators during fault

Three phase induction generators can be utilized to generate electrical power in nonconventional energy conversion systems. With low penetration of induction generators the practice has been to disconnect induction generators from the grid during a network fault. However with an increase in the use of induction generators the induction generators are required to operate during faults and to assist in stabilizing the grid voltage and frequency. During a network fault an induction generator will experience decreased stator voltage and flux with a severity depending on the location of the fault. This paper deals with the performance analysis of different induction generator schemes for grid-connected as well as isolated system applications during electrical faults and after clearance of the fault.