Projeto ótimo de motores de indução trifásicos para aplicação industrial

Abstract

This work proposes the systematization of a design procedure for rotating machines in the sketch phase, in which a sizing method based on parameter optimization is developed, aimed at being applied to a family of three-phase induction motors used in industry. Initially, the three-phase induction motor model in steady-state operation is addressed, highlighting its main characteristics and the parameters that will serve as the basis for the entire sizing process. Next, an initial sizing model is presented, where the equations that describe most of the machine parameters are defined; the choices that define the topology are made, and the initial values of the parameters necessary to apply the optimization are calculated. Further on, the optimization system is discussed, which is responsible for adjusting the parameter values to the desired values, showing how it is developed, along with an optimization methodology and system tools. Following that, the results achieved are presented, where the initial values obtained in the initial sizing model stage and the final result after applying the optimization system are shown. Based on the final parameter values, the designed machine was simulated using the electromagnetic simulation software Ansys Maxwell, in order to validate the systematized procedure. Finally, a cost and performance analysis of the entire family of sized machines was carried out to understand their main differences. Upon completing the work, coherence in the systematized procedure was observed, although it was found that the procedure still requires improvements to achieve more satisfactory results.