Abhishek Garg and Arun Tomar
This paper presents the starting time calculation for a squirrel cage induction motor. The importance of starting time lies in determining the duration of large current, which flows during the starting of an induction motor. Normally, the starting current of an induction motor is six to eight time of full load current. Plenty of methods have been discovered to start motor in a quick time, but due to un-economic nature, use are limited. Hence, for large motors direct online starting is most popular amongst all due to its economic and feasible nature. But large current with DOL starting results in a heavy potential drop in the power system. Thus, Special care and attention is required in order to design the healthy system. A very simple method to calculate the starting time of motor is proposed in this paper. Respective simulation study has been carried out using MATLAB 7.8.0 environment, which demonstrates the effectiveness of the starting time calculation.
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