An alternative approach to model mechanical stress effects on magnetic hysteresis in electrical steels using complex permeability

Baghel, A. P. S.; Ram, B. Sai; Daniel, Laurent; Kulkarni, S.V.; Krebs, Guillaume; Blumenfeld, Jean-Baptiste; Santandréa, Laurent

doi:10.1016/j.commatsci.2019.03.048

Cited by 14 publications

(11 citation statements)

References 36 publications

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“…Indeed, when considering the magnetic field in the same direction as the applied stress, a tensile stress can lead to slight magnetic improvements for low stress levels before deteriorating the magnetic behavior above a threshold. Regarding the compressive stress, this one leads to a continuous degradation effect that is, at the same stress level, more pronounced than the effect of the tensile stress [12][13][14]. In the present study, the compressive stress levels, as suggested by the thermo-mechanical FE simulations, are indeed a source of degradation for the magnetic properties, as also observed in the literature for compressive stresses applied in the lamination plane [15].…”

Section: Discussionsupporting

confidence: 83%

“…Thus, considering the three directions, the magnetic core is exclusively subjected to compressive stress. It is well established in the literature [12][13][14][15] that mechanical stress influences the magnetic behavior. Indeed, when considering the magnetic field in the same direction as the applied stress, a tensile stress can lead to slight magnetic improvements for low stress levels before deteriorating the magnetic behavior above a threshold.…”

Section: Discussionmentioning

confidence: 99%

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Effect of industrial impregnation process on the magnetic properties of electrical steels

Helbling

Bénabou

Gorp

et al. 2021

Journal of Magnetism and Magnetic Materials

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This paper deals with the experimental investigation of the effect of impregnation process on the normal magnetization curve and iron losses of electrical steels. To address this issue, several laminated toroidal magnetic circuits have been designed to characterize the magnetic properties with the flux metric method. The first configuration considers magnetic circuits wrapped with adhesive tape so that the dielectric resin will be deposited only on the outer surface of the magnetic circuit. In the second configuration, the magnetic circuits are unwrapped, which will allow the resin to diffuse within the inter-laminar spaces of the magnetic circuit. The obtained experimental results show significant effects on the magnetic properties in both cases. However, depending on the considered configuration, the resin diffusion also has an influence on the changes in magnetic properties.

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Section: Discussionsupporting

confidence: 83%

Section: Discussionmentioning

confidence: 99%

Effect of industrial impregnation process on the magnetic properties of electrical steels

Helbling

Bénabou

Gorp

et al. 2021

Journal of Magnetism and Magnetic Materials

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“…In contrast to existing works, finite element analysis (FEA) was employed to analyze the machine as whole and that resulted in a detailed electromagnetic study with accurate results. The complex function of permeability was used for the first time to model the impact of stress in [32]. The developed scheme in [32] is consistent with numerical analysis and significantly decreases the computational time.…”

Section: Introductionmentioning

confidence: 92%

Analysis of Electric Motor Magnetic Core Loss under Axial Mechanical Stress

Kumar

Raj²,

Vijayakumar

et al. 2020

Sensors

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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 50Hz 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.

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“…Noninvasive techniques based on impedance changes have been developed for a long time using electromagnetic fields [1][2][3][4] to monitor the electromagnetic properties of samples. The impedance of an antenna or coil system depends on the frequency of the electromagnetic field, its electrical resistance, capacitance, and inductance.…”

Section: Introductionmentioning

confidence: 99%

Detecting Magnetic Permeability and Electrical Conductivity Fluctuations in Metallic Ferromagnetic Sheets through the Shielding Effect

Hernandoa

Giacomone

Viñolasb

et al. 2022

Physica Status Solidi (b)

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In this report, a method is proposed for determining the fluctuations of physical and structural properties in metallic ferromagnetic samples by magnetic scanning. The method is based on the shielding of a circular loop electromagnetic field source using a ferromagnetic and metallic sheet. The shielding of the electromagnetic field depends on the field frequency and amplitude as well as the electrical conductivity and magnetic permeability of the sheet. The proposed method does not require winding around the sheet. The experimental AC shielding results are reported.

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An alternative approach to model mechanical stress effects on magnetic hysteresis in electrical steels using complex permeability

Cited by 14 publications

References 36 publications

Effect of industrial impregnation process on the magnetic properties of electrical steels

Effect of industrial impregnation process on the magnetic properties of electrical steels

Analysis of Electric Motor Magnetic Core Loss under Axial Mechanical Stress

Detecting Magnetic Permeability and Electrical Conductivity Fluctuations in Metallic Ferromagnetic Sheets through the Shielding Effect

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