Analysis of Electromagnetic Parameters in a Three-Phase Induction Motor via Numerical Method

Resumo

Electric motors play a central role in the automation and operation of modern industrial systems and are widely used in production processes around the world. These devices have the primary function of converting electrical energy into mechanical energy through the interaction between magnetic fields and conductors carrying electric current. Among the various available topologies, the three-phase induction motor with squirrel-cage rotor stands out for its robustness, low maintenance cost, and wide applicability. It is the most widely used in industry due to its ability to efficiently meet the operational demands of various sectors. This work aims to study relevant electromagnetic quantities, such as the electromagnetic torque in the squirrel-cage rotor motor. For this study, the Finite Element Method implemented in MATLAB will be used to simulate and evaluate relevant electromagnetic quantities, based on the geometric and electrical parameters of the Tesla Model S electric motor, available in the literature. The electromagnetic behavior of the induction motor with squirrel-cage rotor—whose characteristic structure includes short-circuited bars—was simulated. The motor parameters were incorporated into the developed algorithm, allowing for the analysis of the distribution of the magnetic vector potential and the flux in the air gap. Time harmonization was taken into account, ensuring greater ease in modeling and contributing to the achievement of results that proved to be consistent with data from the literature. The extended paper will present the details of the computational modeling, the FEM formulation applied to the electromagnetic problem, as well as graphs, field distributions, and quantitative comparisons between the simulated results and reference values.