Diseño y construcción de un banco de pruebas para la detección de fallas en motores de inducción trifásicos

Abstract

This work presents the design, construction and validation of a test bench system for electrical and mechanical fault detection in 3-phase induction motors by using Motor Current Signal Analysis technique (MCSA). Signals are treated by Fourier Transform. Harmonic’s failure in the stator current are measured by hall effect sensors and digital-analogic converters in each of phases. Equipment is designed to work with 1 HP induction motors in different working setup regimens, where the speed and load applied to the motor can be changed. For equipment validation, electric motors were analyzed with one, two and three broken bars in their structure, the results obtained are then compared with a mathematical model for broken bars failures based on the resistance and inductance matrix of the motors. Data arrays of up to 600000 samples with different performance parameters, allow the implementation of a detection and signal classification algorithm.