DIAGNOSTIC DES DEFAUTS ET ANALYSE ELECTROMAGNETIQUE EN 2D DES MACHINES ASYNCHRONES
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Date
2024
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Publisher
université de msila
Abstract
In this study, the broken bar current is given a non-zero value, and the broken bar is
modelled by a large resistance. The FEM machine fault model is used to study the
behaviour of the machine under various fault conditions, such as fault (broken bar). We
have shown the evolution of the local quantities (the lines of the magnetic field, the
magnetic induction), as well as the global quantities (the currents, the electromagnetic
torque, and the speed).
The analysis provided by the finite element approach then demonstrates that it is a useful
and affordable way to analyze the impact of rotor defects on the behavior of asynchronous
machines, and has enabled us to comprehend and quantify the local effects of rotor faults.
These outcomes provided compelling evidence for the efficiency of the approach
employed in our investigation in identifying flaws (broken bars) in the squirrel cage rotor
and anticipating future issues with the device.
A validation of the accuracy of our work from the third chapter, where we utilized the
MATLAB software, is also expressed in this chapter utilizing the Flux2D® SOLVER tool
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Keywords
Squirrel cage induction motors, rotor broken bar BRB, WT, FFT, continuous wavelet transform, discrete wavelet transform, FEM.