Three-phase induction motors are used in a wide variety of industrial applications. One of the most important areas of its use is the automotive industry. The objective of this diploma thesis was numerical modelling of three phase induction motors for electric drive system of a L7e-C category vehicle. Within the first part of the diploma thesis, the comparison of induction motors with three different configurations of rotor packages with the same stator geometry and winding configuration has been performed. The rotor packages differed from each other in shape of the squirrel cage rotor bars. The analysed rotor bars were drip shape, double rectangular and double round shape. The comparison and analysis have been performed using 2D numerical modelling based on finite element method. Numerical simulations and comparison of the motors have been done based on the calculated efficiency, shaft power, torque characteristics, stator currents and 2D distribution of magnetic flux density. The numerical results showed that the motor with the drip shape rotor bars results in the highest efficiency, torque and output shaft power. Based on numerical simulations, the battery supply voltage of 96 V has been determined to be the most adequate. Finally, the motor model with the drip shape rotor bars was modified to comply with the requirements of the L7e-C category vehicles.
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