• Nirav M. Dudhat
• Dr. Akshay A. Pandya
• Urvi S. Marathe

In this paper the protection of three phase induction motor is simulated using fuzzy logic. Mainly in system there are two types of faults: Mechanical and Electrical. In mechanical faults broken rotor bar, mass unbalance, air gap eccentricity, bearing damage, rotor winding failure, and stator winding failure are there, where as in electrical faults unbalance of voltage or current, single phasing, under voltage, over-voltage, over-current, phase sequence reversal, earth fault, overload are there. Among from them only six faults are taken in this paper, those are over voltage, over current, voltage and current unbalance, low voltage and temperature rise. In the conventional protection system the time delay is predefined for various faults without consideration of fault level. If any temporary failure is detected in system, motor should not stop. Similarly if system waits too long to stop motor in critical faulty condition then it will lead to the serious defect. So it is necessary to set time delay optimally. By fuzzy logic the delay time is computed on the basis of fault level if fault persists even after the delay time then system will send trip signal to motor. In this paper different time delays are computed for various faulty parameters. The time delay is obtained according to rule base..

Fuzzy logic; induction motor; motor protection; Simulink model; artificial intelligence; rules; fuzzy rule base.

"Induction Motor Protection System Using Fuzzy Logic ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 11, page no.291-296, November-2018, Available :http://www.jetir.org/papers/JETIRK006042.pdf

"Induction Motor Protection System Using Fuzzy Logic ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 11, page no. pp291-296, November-2018, Available at : http://www.jetir.org/papers/JETIRK006042.pdf