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Open AccessLetter

Analysis of Electric Motor Magnetic Core Loss under Axial Mechanical Stress

1
PSG College of Technology, Coimbatore 641004, India
2
Specialist Motors, ELGI Equipment Ltd., Coimbatore 641005, India
3
Department School of Computer Science and Engineering, The University of New South Wales, Sydney, NSW 2052, Australia
4
Vellore Institute of Technology, Vellore 632014, India
5
School of Computing, SASTRA Deemed University, Thanjavur 613401, India
6
Department of Mechanical Engineering, Politecnico di Milano, 20156 Milan, Italy
7
School of Electronics Engineering, Kyungpook National University, Daegu 41566, Korea
*
Author to whom correspondence should be addressed.
Sensors 2020, 20(23), 6818; https://doi.org/10.3390/s20236818
Received: 20 October 2020 / Revised: 15 November 2020 / Accepted: 20 November 2020 / Published: 29 November 2020
(This article belongs to the Section Physical Sensors)
The electrical machine core is subjected to mechanical stresses during manufacturing processes. These stresses include radial, circumferential and axial components that may have significant influence on the magnetic properties and it further leads to increase in iron loss and permeability in the stator core. In this research work, analysis of magnetic core iron loss under axial mechanical stress is investigated. The magnetic core is designed with Magnetic Flux Density (MF) ranging from 1.0 T to 1.5 T with estimated dimensions under various input voltages from 5 V to 85 V. Iron losses are predicted by the axial pressure created manually wherever required and is further applied to the designed magnetic core in the range of 5 MPa to 50 MPa. Finite element analysis is employed to estimate the magnetic core parameters and the magnetic core dimensions. A ring core is designed with the selected dimensions for the experimental evaluation. The analysis of iron loss at 50 Hz frequency for non-oriented electrical steel of M400-50A is tested experimentally using the Epstein frame test and force-fit setup test. Experimental evaluation concludes that the magnetic core saturates when it reaches its knee point of the B-H curve of the chosen material and also reveals that the axial pressure has a high impact on the magnetic properties of the material. View Full-Text
Keywords: ansys maxwell software; axial pressure; iron loss; magnetic core; mechanical stress ansys maxwell software; axial pressure; iron loss; magnetic core; mechanical stress
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MDPI and ACS Style

Kumar, L.A.; Raj, B.M.; Vijayakumar, V.; Indragandhi, V.; Subramaniyaswamy, V.; Karimi, H..R.; Veluvolu, K.C. Analysis of Electric Motor Magnetic Core Loss under Axial Mechanical Stress. Sensors 2020, 20, 6818. https://doi.org/10.3390/s20236818

AMA Style

Kumar LA, Raj BM, Vijayakumar V, Indragandhi V, Subramaniyaswamy V, Karimi HR, Veluvolu KC. Analysis of Electric Motor Magnetic Core Loss under Axial Mechanical Stress. Sensors. 2020; 20(23):6818. https://doi.org/10.3390/s20236818

Chicago/Turabian Style

Kumar, L. A.; Raj, Bagianathan M.; Vijayakumar, Varadarajan; Indragandhi, Vairavasundaram; Subramaniyaswamy, Vairavasundaram; Karimi, Hamid. R.; Veluvolu, Kalyana C. 2020. "Analysis of Electric Motor Magnetic Core Loss under Axial Mechanical Stress" Sensors 20, no. 23: 6818. https://doi.org/10.3390/s20236818

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