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Coil Winding Losses: Decomposition Strategy

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Coil Winding Losses: Decomposition Strategy. / Lehti, Leena; Keränen, Janne; Suuriniemi, Saku; Kettunen, Lauri.

In: IEEE Transactions on Magnetics, Vol. 52, No. 1, 7000106, 01.2016.

Research output: Contribution to journalArticleScientificpeer-review

Harvard

Lehti, L, Keränen, J, Suuriniemi, S & Kettunen, L 2016, 'Coil Winding Losses: Decomposition Strategy', IEEE Transactions on Magnetics, vol. 52, no. 1, 7000106. https://doi.org/10.1109/TMAG.2015.2474304

APA

Lehti, L., Keränen, J., Suuriniemi, S., & Kettunen, L. (2016). Coil Winding Losses: Decomposition Strategy. IEEE Transactions on Magnetics, 52(1), [ 7000106]. https://doi.org/10.1109/TMAG.2015.2474304

Vancouver

Lehti L, Keränen J, Suuriniemi S, Kettunen L. Coil Winding Losses: Decomposition Strategy. IEEE Transactions on Magnetics. 2016 Jan;52(1). 7000106. https://doi.org/10.1109/TMAG.2015.2474304

Author

Lehti, Leena ; Keränen, Janne ; Suuriniemi, Saku ; Kettunen, Lauri. / Coil Winding Losses: Decomposition Strategy. In: IEEE Transactions on Magnetics. 2016 ; Vol. 52, No. 1.

Bibtex - Download

@article{ce5fc0c6a23942e2bf0e4985016e38da,
title = "Coil Winding Losses: Decomposition Strategy",
abstract = "Precise modeling of the magnetic field in the coil wire of an electric machine often becomes a major challenge: with the high number of turns and small penetration depth, the number of degrees of freedom exceeds reasonable limits in any standard approximation method. Precise approximation, however, is critical, e. g., to reliable coil loss estimation. Hence, there is a call for specialized approximative methods. This paper presents a method for time-harmonic coil wire field computations in 2-D problems. We replace the coil by a lattice of polygonal plane fillers and span a low-dimensional function space on the polygon boundaries. The reliability of loss estimates requires accurate computations of the responses to the interface excitations of this space. The responses constitute a Dirichlet-to-Neumann map to efficiently couple plane fillers together and to a standard finite-element method (FEM) outside the coil regions. The outcome is significantly faster than the standard FEM alone. The results are still in good agreement.",
author = "Leena Lehti and Janne Ker{\"a}nen and Saku Suuriniemi and Lauri Kettunen",
year = "2016",
month = "1",
doi = "10.1109/TMAG.2015.2474304",
language = "English",
volume = "52",
journal = "IEEE Transactions on Magnetics",
issn = "0018-9464",
publisher = "Institute of Electrical and Electronics Engineers",
number = "1",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - Coil Winding Losses: Decomposition Strategy

AU - Lehti, Leena

AU - Keränen, Janne

AU - Suuriniemi, Saku

AU - Kettunen, Lauri

PY - 2016/1

Y1 - 2016/1

N2 - Precise modeling of the magnetic field in the coil wire of an electric machine often becomes a major challenge: with the high number of turns and small penetration depth, the number of degrees of freedom exceeds reasonable limits in any standard approximation method. Precise approximation, however, is critical, e. g., to reliable coil loss estimation. Hence, there is a call for specialized approximative methods. This paper presents a method for time-harmonic coil wire field computations in 2-D problems. We replace the coil by a lattice of polygonal plane fillers and span a low-dimensional function space on the polygon boundaries. The reliability of loss estimates requires accurate computations of the responses to the interface excitations of this space. The responses constitute a Dirichlet-to-Neumann map to efficiently couple plane fillers together and to a standard finite-element method (FEM) outside the coil regions. The outcome is significantly faster than the standard FEM alone. The results are still in good agreement.

AB - Precise modeling of the magnetic field in the coil wire of an electric machine often becomes a major challenge: with the high number of turns and small penetration depth, the number of degrees of freedom exceeds reasonable limits in any standard approximation method. Precise approximation, however, is critical, e. g., to reliable coil loss estimation. Hence, there is a call for specialized approximative methods. This paper presents a method for time-harmonic coil wire field computations in 2-D problems. We replace the coil by a lattice of polygonal plane fillers and span a low-dimensional function space on the polygon boundaries. The reliability of loss estimates requires accurate computations of the responses to the interface excitations of this space. The responses constitute a Dirichlet-to-Neumann map to efficiently couple plane fillers together and to a standard finite-element method (FEM) outside the coil regions. The outcome is significantly faster than the standard FEM alone. The results are still in good agreement.

U2 - 10.1109/TMAG.2015.2474304

DO - 10.1109/TMAG.2015.2474304

M3 - Article

VL - 52

JO - IEEE Transactions on Magnetics

JF - IEEE Transactions on Magnetics

SN - 0018-9464

IS - 1

M1 - 7000106

ER -