Abstract
This article presents a novel approach based on the electromechanical torque signal for the inter-turn short-circuit fault (ISCF) detection and the ISCF severity estimation in permanent magnet synchronous motors (PMSMs). The electromechanical torque data have been obtained experimentally in the healthy condition and in three various states of the ISCF at various load rates and at various operating speeds. To extract the features to be used in the ISCF diagnosis, the fast Fourier transform (FFT) implemented to the torque signal. The torque’s second and fourth harmonics were found to be new turn fault features that could be used for ISCF diagnosis. These features were used to train and test the classification algorithms. Four classification algorithms were used to detect ISCF and determine the severity of ISCF: decision trees (DT), artificial neural networks (ANN), K-nearest neighbor (KNN) and support vector machines (SVM). Classification accuracies of 100%, 99.30%, 97.91% and 95.48% were achieved by the ANN, SVM, KNN and DT classifiers, respectively. High accuracy ISCF detection and high accuracy ISCF severity estimation were performed using the developed diagnostic method based on the torque signal.
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Abbreviations
- C:
-
The cost parameter
- K:
-
The number of nearest neighbors
- TP:
-
Correct classification
- FN:
-
Incorrect classification
- PMSM:
-
Permanent magnet synchronous motors
- ML:
-
Machine learning
- WT:
-
Wavelet transform
- ISCF:
-
Inter-turn short-circuit fault
- ANN:
-
Artificial neural networks
- FFT:
-
Fast Fourier transform
- SVM:
-
Support vector machines
- MCSA:
-
Machine current signature analysis
- DT:
-
Decision trees
- KNN:
-
K-nearest neighbor
- STFT:
-
Short-time Fourier transform
- FEA:
-
Finite element analysis
- 1D-LBP:
-
One-dimensional local binary patterns
- RF:
-
Random forests
- VSI:
-
Voltage source inverter
- DAQ:
-
Data acquisition systems
- QDA:
-
Quadrature discriminant analysis
- MFNN:
-
Multilayer feedforward neural network
- MSE:
-
The mean square error
- LDA:
-
Linear discriminant analysis
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Lale, T., Gümüş, B. An effective torque-based method for automatic turn fault detection and turn fault severity classification in permanent magnet synchronous motor. Electr Eng 106, 2865–2876 (2024). https://doi.org/10.1007/s00202-023-02113-w
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DOI: https://doi.org/10.1007/s00202-023-02113-w