Starting performance of Doubly Fed Induction Machine drive serving to pumped storage plants subjected to faults in power and control circuits

Doubly Fed Induction Machine (DFIM) is preferred in pumping applications since it offers high efficiency and energy conservation at part load operation with a partial rating of power converters. In this machine; smooth starting is ensured by back-back voltage source power converter connected in rotor circuit. This paper summarizes the procedure for the smooth starting of DFIM with a selection of both converter rating and DC link voltage. In addition; this paper primarily presents the dynamic behavior during smooth starting of machine under converter and sensor faults where converter/sensors are considered as significance component in DFIM; also the survival of machine drive during starting period is evaluated under different fault conditions with the performance consideration of DC link voltage; grid current; controller settling time and speed fluctuations.