Estimação de parâmetros e deteção de faltas incipientes de máquinas assíncronas.

Abstract

The aim of this work to present contributions to the study of parameters estimation and incipient fault detection winding stator of the asynchronous machine. From the dynamic model of the machine, appropiate parameter estimation models based only in the measurements of currents and the stator voltages are developed. Initially, one technique for the estimation of the stator resistance of the machine based on the application homopolar of voltages signals it is proposed. The considered model is analyzed by simulation and experimentally. After that it is proposed one form of voltage wave that allows to estimate all the remaining parameters of the machine without aid of mechanical devices. The model is evaluated through experimental results.. Models for induction machine are developed operating with incipient faults. Finally, one technique incipient faut detection in real time for inter-turn stator winding faults in three-phase induction motor is considered.