Analysis of Cylindrically and Spherically Embossed Flux Barriers in Non-oriented Electrical Steel

Ines Gilch; Simon Vogt; Tobias Neuwirth; Benedikt Schauerte; Kay Hameyer; Michael Schulz; Alex Gustschin; Wolfram Volk; Hannes Alois Weiss

doi:10.1007/978-3-030-75381-8_193

Analysis of Cylindrically and Spherically Embossed Flux Barriers in Non-oriented Electrical Steel

Ines Gilch, Simon Vogt, Tobias Neuwirth, Benedikt Schauerte, Kay Hameyer, Michael Schulz, Alex Gustschin, Wolfram Volk, Hannes Alois Weiss

Chair of Metal Forming and Casting

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

1 Scopus citations

Abstract

In reluctance and permanent magnet synchronous machines, flux barriers are crucial for magnetic flux guidance. Designed as cutouts, flux barriers reduce the mechanical strength of the rotor construction. To operate these electric drives at higher rotational speed, an alternative flux barrier design is required. Since residual stress influences the magnetic properties of soft magnetic materials, this paper deals with embossing induced residual stress as flux barriers in non-oriented electrical steel with 2.4 wt% silicon and a sheet thickness of 0.35 mm. The investigated flux barriers were fabricated with a cylindrical or spherical punch at two different penetration depths and were compared to a flux barrier fabricated as cutout. A residual stress analysis using finite element analysis helps understanding the mechanism of embossed flux barriers. Additionally, the influence of induced residual stress on the magnetic material behavior is measured using standardized single sheet tests and neutron grating interferometry measurements. This investigation aimed at a better understanding of the flux barrier design by local induction of residual stress.

Original language	English
Title of host publication	Forming the Future - Proceedings of the 13th International Conference on the Technology of Plasticity
Editors	Glenn Daehn, Jian Cao, Brad Kinsey, Erman Tekkaya, Anupam Vivek, Yoshinori Yoshida
Publisher	Springer Science and Business Media Deutschland GmbH
Pages	2303-2318
Number of pages	16
ISBN (Print)	9783030753801
DOIs	https://doi.org/10.1007/978-3-030-75381-8_193
State	Published - 2021
Event	13th International Conference on the Technology of Plasticity, ICTP 2021 - Virtual, Online Duration: 25 Jul 2021 → 30 Jul 2021

Publication series

Name	Minerals, Metals and Materials Series
ISSN (Print)	2367-1181
ISSN (Electronic)	2367-1696

Conference

Conference	13th International Conference on the Technology of Plasticity, ICTP 2021
City	Virtual, Online
Period	25/07/21 → 30/07/21

Keywords

Electric drive
Electrical steel
Embossing
Imprint
Magnetic flux barrier
Residual stress

Access to Document

10.1007/978-3-030-75381-8_193

Cite this

Gilch, I., Vogt, S., Neuwirth, T., Schauerte, B., Hameyer, K., Schulz, M., Gustschin, A., Volk, W., & Weiss, H. A. (2021). Analysis of Cylindrically and Spherically Embossed Flux Barriers in Non-oriented Electrical Steel. In G. Daehn, J. Cao, B. Kinsey, E. Tekkaya, A. Vivek, & Y. Yoshida (Eds.), Forming the Future - Proceedings of the 13th International Conference on the Technology of Plasticity (pp. 2303-2318). (Minerals, Metals and Materials Series). Springer Science and Business Media Deutschland GmbH. https://doi.org/10.1007/978-3-030-75381-8_193

Gilch, Ines ; Vogt, Simon ; Neuwirth, Tobias et al. / Analysis of Cylindrically and Spherically Embossed Flux Barriers in Non-oriented Electrical Steel. Forming the Future - Proceedings of the 13th International Conference on the Technology of Plasticity. editor / Glenn Daehn ; Jian Cao ; Brad Kinsey ; Erman Tekkaya ; Anupam Vivek ; Yoshinori Yoshida. Springer Science and Business Media Deutschland GmbH, 2021. pp. 2303-2318 (Minerals, Metals and Materials Series).

@inproceedings{93f6f46e1f414a80a04b7071f13d1fcf,

title = "Analysis of Cylindrically and Spherically Embossed Flux Barriers in Non-oriented Electrical Steel",

abstract = "In reluctance and permanent magnet synchronous machines, flux barriers are crucial for magnetic flux guidance. Designed as cutouts, flux barriers reduce the mechanical strength of the rotor construction. To operate these electric drives at higher rotational speed, an alternative flux barrier design is required. Since residual stress influences the magnetic properties of soft magnetic materials, this paper deals with embossing induced residual stress as flux barriers in non-oriented electrical steel with 2.4 wt% silicon and a sheet thickness of 0.35 mm. The investigated flux barriers were fabricated with a cylindrical or spherical punch at two different penetration depths and were compared to a flux barrier fabricated as cutout. A residual stress analysis using finite element analysis helps understanding the mechanism of embossed flux barriers. Additionally, the influence of induced residual stress on the magnetic material behavior is measured using standardized single sheet tests and neutron grating interferometry measurements. This investigation aimed at a better understanding of the flux barrier design by local induction of residual stress.",

keywords = "Electric drive, Electrical steel, Embossing, Imprint, Magnetic flux barrier, Residual stress",

author = "Ines Gilch and Simon Vogt and Tobias Neuwirth and Benedikt Schauerte and Kay Hameyer and Michael Schulz and Alex Gustschin and Wolfram Volk and Weiss, {Hannes Alois}",

note = "Publisher Copyright: {\textcopyright} 2021, The Minerals, Metals & Materials Society.; 13th International Conference on the Technology of Plasticity, ICTP 2021 ; Conference date: 25-07-2021 Through 30-07-2021",

year = "2021",

doi = "10.1007/978-3-030-75381-8_193",

language = "English",

isbn = "9783030753801",

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publisher = "Springer Science and Business Media Deutschland GmbH",

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editor = "Glenn Daehn and Jian Cao and Brad Kinsey and Erman Tekkaya and Anupam Vivek and Yoshinori Yoshida",

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Gilch, I, Vogt, S, Neuwirth, T, Schauerte, B, Hameyer, K, Schulz, M, Gustschin, A, Volk, W & Weiss, HA 2021, Analysis of Cylindrically and Spherically Embossed Flux Barriers in Non-oriented Electrical Steel. in G Daehn, J Cao, B Kinsey, E Tekkaya, A Vivek & Y Yoshida (eds), Forming the Future - Proceedings of the 13th International Conference on the Technology of Plasticity. Minerals, Metals and Materials Series, Springer Science and Business Media Deutschland GmbH, pp. 2303-2318, 13th International Conference on the Technology of Plasticity, ICTP 2021, Virtual, Online, 25/07/21. https://doi.org/10.1007/978-3-030-75381-8_193

Analysis of Cylindrically and Spherically Embossed Flux Barriers in Non-oriented Electrical Steel. / Gilch, Ines; Vogt, Simon; Neuwirth, Tobias et al.
Forming the Future - Proceedings of the 13th International Conference on the Technology of Plasticity. ed. / Glenn Daehn; Jian Cao; Brad Kinsey; Erman Tekkaya; Anupam Vivek; Yoshinori Yoshida. Springer Science and Business Media Deutschland GmbH, 2021. p. 2303-2318 (Minerals, Metals and Materials Series).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - Analysis of Cylindrically and Spherically Embossed Flux Barriers in Non-oriented Electrical Steel

AU - Gilch, Ines

AU - Vogt, Simon

AU - Neuwirth, Tobias

AU - Schauerte, Benedikt

AU - Hameyer, Kay

AU - Schulz, Michael

AU - Gustschin, Alex

AU - Volk, Wolfram

AU - Weiss, Hannes Alois

PY - 2021

Y1 - 2021

N2 - In reluctance and permanent magnet synchronous machines, flux barriers are crucial for magnetic flux guidance. Designed as cutouts, flux barriers reduce the mechanical strength of the rotor construction. To operate these electric drives at higher rotational speed, an alternative flux barrier design is required. Since residual stress influences the magnetic properties of soft magnetic materials, this paper deals with embossing induced residual stress as flux barriers in non-oriented electrical steel with 2.4 wt% silicon and a sheet thickness of 0.35 mm. The investigated flux barriers were fabricated with a cylindrical or spherical punch at two different penetration depths and were compared to a flux barrier fabricated as cutout. A residual stress analysis using finite element analysis helps understanding the mechanism of embossed flux barriers. Additionally, the influence of induced residual stress on the magnetic material behavior is measured using standardized single sheet tests and neutron grating interferometry measurements. This investigation aimed at a better understanding of the flux barrier design by local induction of residual stress.

AB - In reluctance and permanent magnet synchronous machines, flux barriers are crucial for magnetic flux guidance. Designed as cutouts, flux barriers reduce the mechanical strength of the rotor construction. To operate these electric drives at higher rotational speed, an alternative flux barrier design is required. Since residual stress influences the magnetic properties of soft magnetic materials, this paper deals with embossing induced residual stress as flux barriers in non-oriented electrical steel with 2.4 wt% silicon and a sheet thickness of 0.35 mm. The investigated flux barriers were fabricated with a cylindrical or spherical punch at two different penetration depths and were compared to a flux barrier fabricated as cutout. A residual stress analysis using finite element analysis helps understanding the mechanism of embossed flux barriers. Additionally, the influence of induced residual stress on the magnetic material behavior is measured using standardized single sheet tests and neutron grating interferometry measurements. This investigation aimed at a better understanding of the flux barrier design by local induction of residual stress.

KW - Electric drive

KW - Electrical steel

KW - Embossing

KW - Imprint

KW - Magnetic flux barrier

KW - Residual stress

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DO - 10.1007/978-3-030-75381-8_193

M3 - Conference contribution

AN - SCOPUS:85112542635

SN - 9783030753801

T3 - Minerals, Metals and Materials Series

SP - 2303

EP - 2318

BT - Forming the Future - Proceedings of the 13th International Conference on the Technology of Plasticity

A2 - Daehn, Glenn

A2 - Cao, Jian

A2 - Kinsey, Brad

A2 - Tekkaya, Erman

A2 - Vivek, Anupam

A2 - Yoshida, Yoshinori

PB - Springer Science and Business Media Deutschland GmbH

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Gilch I, Vogt S, Neuwirth T, Schauerte B, Hameyer K, Schulz M et al. Analysis of Cylindrically and Spherically Embossed Flux Barriers in Non-oriented Electrical Steel. In Daehn G, Cao J, Kinsey B, Tekkaya E, Vivek A, Yoshida Y, editors, Forming the Future - Proceedings of the 13th International Conference on the Technology of Plasticity. Springer Science and Business Media Deutschland GmbH. 2021. p. 2303-2318. (Minerals, Metals and Materials Series). doi: 10.1007/978-3-030-75381-8_193

Analysis of Cylindrically and Spherically Embossed Flux Barriers in Non-oriented Electrical Steel

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