Document Type : Reseach Article
Authors
National Institute of Technology Raipur
Abstract
Electric machines, particularly induction motors, are widely used in industry as they are robust in construction and require less maintenance. These machines are continuously operated under high loading conditions, which may result in machine vibrations. The Experimental-Modal-Analysis (EMA) technique is employed in this research to determine electrical machine vibrations. The hammer test is a popular EMA approach for locating the exact location of winding looseness. EMA test is executed on the stator winding to extract the modal parameters to find exact deformation in machine windings. Mathematical calculations and a numerical model are developed to validate the experimental data. The EMA’s Operational Deformation Structure (ODS) validates the winding’s looseness precisely. Two test machines’ MA and MB windings are tested with EMA to evaluate the stator slot structure’s looseness. Finally, the proposed technique is compared with the finite element technique along with mathematical calculations for verification.
Keywords
- [1] Fang H, Li D, Qu R, Yan P, “Modulation effect of slotted structure on vibration response in electrical machines,” IEEE Trans. on Ind. Electronic, 21;66(4), pp. 2998-3007, Jun 2018.
- [2] Hong J, Wang S, Sun Y, Cao H, “A Method of Modal Parameter Estimation of the Motor Based on Electromagnetic Vibration Exciter,” IEEE Trans. on Ind. Appl, 19;56(3), pp. 2636-43, Mar 2020.
- [3] Chai F, Li Y, Pei Y, Yu Y, “Analysis of radial vibration caused by magnetic force and torque pulsation in interior permanent magnet synchronous motors considering air-gap deformations,” IEEE Trans. on Ind. Electronic, 15;66(9), pp. 6703-14, Nov 2018.
- [4] Kapu V. Prasad, and Varsha Singh, “Numerical Investigation and Experimental Modal Analysis Validation to Mitigate Vibration of Induction Machine Caused due to Electrical and Mechanical Faults,”Journal of Electrical Engineering & Technology: 1-15, Mar 2022.
- [5] Bessous, Noureddine, Salim Sbaa, Radouane Bousseksou, and Abdelkrim Allag, “Detailed study of rolling bearing element faults in rotating electrical Machines using MVSA technique,”Majlesi Journal of Electrical Engineering 13, No. 3, pp. 75-82, Apr 2019.
- [6] Yang H, Chen Y, “Influence of radial force harmonics with low mode number on electromagnetic vibration of PMSM,” IEEE Trans. on Energy Convers, 11;29(1), pp. 38-45, Dec 2013.
- [7] Hong J, Wang S, Sun Y, Cao H, “A PM pole with axial varied width for vibration mitigation in PM brush DC motors,” IEEE Trans. on Ind. Electronic, 9;66(5), pp. 3595-604, Jul 2018.
- [8] Zhao, Yang, Bo Yan, Chong Zeng, Song Huang, Changlin Chen, and Jianan Deng, “Optimal scheme for structural design of large turbogenerator stator end winding,”IEEE Transactions on Energy Conversion 31, No. 4, pp. 1423-1432, Aug 2016.
- [9] Iga Y, Takahashi K, Yamamoto Y, “Finite element modelling of turbine generator stator end windings for vibration analysis,” IET Electric Power Applications, 29;10(2), pp. 75-81, Feb 2016.
- Wang S, Hong J, Sun Y, Shen J, Cao H, Yang Z, “Analysis and experimental verification of electromagnetic vibration mode of PM brush DC motors,” IEEE Trans. on Energy Convers, 27;33(3), pp. 1411-21, Mar 2018.
- Pindoriya, Rajesh M., Rishi Kant Thakur, Bharat Singh Rajpurohit, and Rajeev Kumar, “Numerical and Experimental Analysis of Torsional Vibration and Acoustic Noise of PMSM Coupled With DC Generator.”IEEE Trans. on Ind. Electronic, 69, No. 4, pp. 3345-3356, Apr 2022.
- Zhao J, Wang Z, Liu H, Ning F, Hong X, Du J, Yu M, “Modal analysis and structure optimization of permanent magnet synchronous motor,” IEEE Access, 18;8, pp. 151856-65, Aug 2020.
- Prasad K.V, Singh V, “Looseness Identification of Stator End Windings of Induction Motor by Modal Test,” IEEE International Conference on Power Electronics, Drives and Energy Systems (PEDES), 16, pp. 1-5, Dec 2020.
- Spyropoulos DV, Mitronikas ED, “A Review on the Faults of Electric Machines Used in Electric Ships,” Advances in Power Electronics, Jan 1 2013.
- Zhang P, Du Y, Habetler TG, Lu B, “A survey of condition monitoring and protection methods for medium-voltage induction motors,” IEEE Trans. on Ind. Appl, 9;47(1), pp. 34-46 Nov 2010.
- Nekoubin, Amir, Jafar Soltani, and Milad Dowlatshahi, “Design, Optimization and Prototype of a Multi-Phase Fractional Slot Concentrated Windings Surface Mounted on Permanent Magnet Machine,”Majlesi Journal of Electrical Engineering 14, No. 4, pp. 75-84, Dec2020.
- Kumar, Padmanabhan Sampath, Lihua Xie, Mohamed Sathik Mohamed Halick, and Viswanathan Vaiyapuri, “Stator end-winding thermal and magnetic sensor arrays for online stator inter-turn fault detection,”IEEE Sensors Journal 21, No. 4, pp. 5312-5321, Oct 2020.
- Demir, Yucel, Ayman M. El-Refaie, and Metin Aydin, “Investigation of asymmetric and unbalanced winding structures for 3-phase permanent magnet synchronous machines,”IEEE Transactions on Energy Conversion 36, No. 3, pp. 1722-1732, Dec 2020.
- Gaied, Khalaf Salloum, “Wavelet-based prognosis for fault-tolerant control of induction motor with stator and speed sensor faults”Transactions of the Institute of Measurement and Control 37, No. 1, pp. 100-113, Jan 2015.
- Kawady, T. A., A. A. Afify, A. M. Osheiba, and A. I. Taalab, “Modeling and experimental investigation of stator winding faults in induction motors”Electric Power Components and Systems 37, No. 6, pp. 599-611, May 2009.
- Rodríguez, Pedro Vicente Jover, and Antero Arkkio, “Detection of stator winding fault in induction motor using fuzzy logic,”Applied Soft Computing 8, No. 2, pp. 1112-1120, Mar 2008.
- Saghafinia, Ali, and S. Kaboli, “Online adaptive continuous wavelet transform and fuzzy logic based high precision fault detection of broken rotor bars for IM,”Sci Res 4(6), pp. 157-168, Jan 2017.
- Prasad, Kapu V. Sri Ram, and Varsha Singh, “Finite Element Analysis for Fault Diagnosis in Broken Rotor Bar of a Polyphase Induction Motor,” In 2022 Second International Conference on Power, Control and Computing Technologies (ICPC2T), pp. 1-6. IEEE, Mar 2022.
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