* Corresponding author: Jalila Kaouthar Kammoun email kaoutharkammoun@yahoo.fr, 1 Electrical Engineering Department, Sfax Engineering National School 3038 Sfax, Tunisia Copyright © JES 2015 on-line : journal/esrgroups.org/jes Jalila Kaouthar Kammoun 1 , Naourez Ben Hadj 1 , Moez Ghariani 1 J. Electrical Systems 11-4 (2015): 447-462 Regular paper                                                                                                                                                 !   "          "                      #  #!  !                     Keywords: Torque ripple, Induction Motor, FEM, Electric Vehicle, Harmonic, Current density, inter- turn, short-circuit between phases Article history: Received 16 November 2014, Received in revised form 6 November 2015, Accepted 18 November 2015 1. Introduction Induction motors are used worldwide as the workhorse in industrial applications. Such motors are robust machines used not only for general purposes, but also in hazardous locations and severe environments essentially in Electric Vehicles (EVs) application. High Performance Electric Vehicle Systems (HPEVS) based-on 3-phase AC Induction Motor. These systems have been included into full-size vehicles, neighborhood EVs, golf carts, motorcycles, industrial/utility vehicles, high area gardening as well as in such recreational facilities as golf courses and even amusement park attractions [1]. The main reasons for adopting the IM are its ruggedness, reliability, and cost-effectiveness, which are all desired qualities for EVs and HEVs [2]. However, it is recognized that a variety of faults can occur in these motors during normal operation such as rotor fault (broken bars or end ring), stator inter-turn fault, eccentricity fault and bearing fault. A motor failure that is not identified in an initial stage may become catastrophic and the induction motor may suffer severe damage. Thus, undetected motor faults may cascade into motor failure, which in turn may cause shutdowns of VE . Such shutdowns are costly in terms of lost time, maintenance costs, and wasted raw materials.[3] One of the most common faults in the electrical motors is the inter-turn short circuit in the one of the stator coils. The increased heat due to this short circuit may also lead to turn- turn and turn to ground faults. The inter-turn fault is mostly caused by mechanical stress, moisture and partial discharge, which is accelerated for electrical machines supplied by inverters [4].In the case of inter-turn stator winding fault, the distribution of magnetic field parameters was distorted, and the stored energy is reduced when the severity of winding