Chinese Journal of Electrical Engineering ›› 2023, Vol. 9 ›› Issue (1): 142-157.doi: 10.23919/CJEE.2023.000003

• Regular Papers • Previous Articles     Next Articles

扫码分享

Stator Fault Diagnosis of Induction Motor Based on Discrete Wavelet Analysis and Neural Network Technique

Abdelelah Almounajjed1,*, Ashwin Kumar Sahoo1, Mani Kant Kumar2, Sanjeet Kumar Subudhi1   

  1. 1. Electrical Engineering Department, C.V Raman Global University, Bhubaneswar 752054, India;
    2. Electronics and Communication Engineering Department, C.V Raman Global University, Bhubaneswar 752054, India
  • Received:2021-10-19 Revised:2021-12-27 Accepted:2022-01-19 Online:2023-03-25 Published:2023-04-06
  • Contact: *E-mail: abdelelah_almounajjed@hotmail.com
  • About author:Abdelelah Almounajjed received the M.E. degree from Al-Baath University, Homs, Syria, in 2017. He is currently a Ph.D. student in C. V. Raman Global University, Odisha. India. He worked as a lecturer for five years at Al-Baath university. His current research interests are in machine fault diagnosis, signal processing and artificial intelligence applications.
    Ashwin Kumar Sahoo , Professor & HOD in the Department of Electrical Engineering, C. V. Raman Global University, Bhubaneswar, Odisha. He has 25 years of teaching & research experience and 2 years of industrial experience. His research interest includes FACTS, microgrid and fault analysis.
    Mani Kant Kumar received the M.E. degree from Thapar University, Patiala, India, in 2010 and the Ph.D. degree from Motilal Nehru National Institute of Technology Allahabad (MNNIT Allahabad), Pragayraj, India, in 2019. He is currently working as an assistant professor in the Department of Electronics and Communication Engineering, C. V. Raman Global University, Bhubaneswar 752054, India. His current research interests are in signal processing and nonlinear dynamical systems.
    Sanjeet Kumar Subudhi received his B. Tech degree from Silicon Institute of Technology, Biju Pattanaik University of Technology, Odisha, India, in 2008, and M. Tech. degree in Electrical Engineering from Indian Institute of Technology Kharagpur, West Bengal, India, in 2014. Since 2014, he has been working toward the Ph.D. degree in Electrical Engineering Department, National Institute of Technology Rourkela, Odisha, India. Presently, he is working as an assistant professor in Electrical Engineering Department, C. V. Raman Global University, Odisha, India. His research interests include nonlinear dynamics, microgrids, control of switched mode power converters, and power systems.

Abstract: A novel approach by introducing a statistical parameter to estimate the severity of incipient stator inter-turn short circuit (ITSC) faults in induction motors (IMs) is proposed. Determining the incipient ITSC fault and its severity is challenging for several reasons. The stator currents in the healthy and faulty cases are highly similar during the primary stage of the fault. Moreover, the conventional statistical parameters resulting from the analysis of fault signals do not consistently show a systematic variation with respect to the increase in fault intensity. The objective of this study is the early detection of incipient ITSC faults. Furthermore, it aims to determine the percentage of shorted turns in the faulty phase, which acts as an indicator for severe damage to the stator winding. Modeling of the motor in healthy and defective cases is performed using the Clarke Concordia transform. A discrete wavelet transform is applied to the motor currents using a Daubechies-8 wavelet. The statistical parameters L1 and L2 norms are computed for the detailed coefficients. These parameters are obtained under a variety of loads and defects to acquire the most accurate and generalized features related to the fault. Combining L1 and L2 norms creates a novel statistical parameter with notable characteristics to achieve the research aim. An artificial neural network-based back propagation algorithm is employed as a classifier to implement the classification process. The classifier output defines the percentage of defective turns with a high level of accuracy. The competency of the adopted methodology is validated via simulations and experiments. The results confirm the merits of the proposed method, with a classification test correctness of 95.29%.

Key words: Discrete wavelet transform, induction motor, inter-turn short circuit fault, neural networks, statistical parameters