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Energy eigenvalues and neural network analysis for broken bars fault diagnosis in induction machine under variable load: experimental study

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Abstract

In this paper, a technique primarily based on the discrete wavelet transform (DWT) and the slip associated with a neural network (NN) for classification and fault detection of broken rotor bars in an induction machine has been proposed. The calculated energy in each decomposition level obtained by the DWT analysis and the slip of the motor are used as input to the classifier in order to diagnose the healthy and faulty classes. The advantage of this method lays in the use of one single current sensor with the slip factor in order to detect the presence of the fault and identify the number of broken bars under different load conditions. The DWT analysis is proposed to overcome the limitation of the Fourier analysis and it is mainly adapted for the non-stationary signals. Moreover, the slip factor is applied as a second input on the classifier of NN to eliminate the problem of low-load. Feed-forward multi-layer Perceptron neural network is chosen as a technique to classify the fault in an induction machine. This technique is performed and validated by experimental data.

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Acknowledgements

The authors would like to thank Professor Menacer Arezki at the LGEB Laboratory, Biskra, Algeria, for his help.

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Correspondence to Hicham Talhaoui.

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Appendix

Appendix

1.1 Simulation parameter

PnM

rated power

1.1 kW

IM

rated current

2 0.5/4.3 A

VM

rated line voltage

230 V

fN

frequency

50 Hz

pM

number of pole pairs

1

RM

average diameter at the air gap

35.76 10–3 m

lM

length of the rotor

65 10–3 m

eM

air-gap diameter

0.2 10–3 m

NrM

number of bars

16

NsM

number of turns per phase

160

RsM

resistance of a stator phase

7.58 Ω

RbM

resistance of a rotor bar

150 10–6 Ω

ReM

resistance of a ring portion

150 10–6 Ω

LeM

short circuit ring leakage inductance

0.1 10–6 H

LbM

leakage inductance of a rotor bar

0.1 10–6 H

LsfM

stator leakage inductance

26.5 10–3 H

JM

inertia moment

5.4 10–3 kg.m2

1.2 Experimental parameter

PnM

rated power

1.1 kW

IM

nominal current

2 0.5/4.3 A

VM

nominal line voltage

400/230 V

pM

number of pole pairs

2

Υ

connection

 

JM

inertia moment

0.0124 kg.m2

FM

damping coefficient

0.0029 N.m/rad/s

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Talhaoui, H., Ameid, T. & Kessal, A. Energy eigenvalues and neural network analysis for broken bars fault diagnosis in induction machine under variable load: experimental study. J Ambient Intell Human Comput 13, 2651–2665 (2022). https://doi.org/10.1007/s12652-021-03172-2

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  • DOI: https://doi.org/10.1007/s12652-021-03172-2

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