Starting Analysis of Induction Motor: A Computer Simulation by Etap Power Station

The basic requirement for studying starting analysis of Induction motor are the starting current of Induction motor and the voltage flicker during start up. This paper will summarize several common methods and provide application guidelines for proper selection of starting devices. Starting method reviewed will include different types of starters, comparative study of results obtained in laboratory & results obtained by simulation in ETAP (Electrical Transient Analyzer Program) for DOL starter & autotransformer starter, simulation results are also obtained for different cable length, with & without capacitor connected across motor itself. Finally it is concluded that starting current is less in case of autotransformer starter. Starting current & starting time can be further reduced and voltage profile can be improved with the use of capacitor at the motor terminal as a compensating device.