TUTCRIS - Tampereen teknillinen yliopisto

TUTCRIS

Efficient Finite Element Method to Estimate Eddy Current Loss due to Random Interlaminar Contacts in Electrical Sheets

Tutkimustuotosvertaisarvioitu

Standard

Efficient Finite Element Method to Estimate Eddy Current Loss due to Random Interlaminar Contacts in Electrical Sheets. / Shah, Sahas Bikram; Rasilo, Paavo; Hakula, Harri; Arkkio, Antero.

julkaisussa: International Journal of Numerical Modelling: Electronic Networks, Devices and Fields, Vuosikerta 31, Nro 4, e2254, 2018.

Tutkimustuotosvertaisarvioitu

Harvard

Shah, SB, Rasilo, P, Hakula, H & Arkkio, A 2018, 'Efficient Finite Element Method to Estimate Eddy Current Loss due to Random Interlaminar Contacts in Electrical Sheets', International Journal of Numerical Modelling: Electronic Networks, Devices and Fields, Vuosikerta. 31, Nro 4, e2254. https://doi.org/10.1002/jnm.2254

APA

Shah, S. B., Rasilo, P., Hakula, H., & Arkkio, A. (2018). Efficient Finite Element Method to Estimate Eddy Current Loss due to Random Interlaminar Contacts in Electrical Sheets. International Journal of Numerical Modelling: Electronic Networks, Devices and Fields, 31(4), [e2254]. https://doi.org/10.1002/jnm.2254

Vancouver

Shah SB, Rasilo P, Hakula H, Arkkio A. Efficient Finite Element Method to Estimate Eddy Current Loss due to Random Interlaminar Contacts in Electrical Sheets. International Journal of Numerical Modelling: Electronic Networks, Devices and Fields. 2018;31(4). e2254. https://doi.org/10.1002/jnm.2254

Author

Shah, Sahas Bikram ; Rasilo, Paavo ; Hakula, Harri ; Arkkio, Antero. / Efficient Finite Element Method to Estimate Eddy Current Loss due to Random Interlaminar Contacts in Electrical Sheets. Julkaisussa: International Journal of Numerical Modelling: Electronic Networks, Devices and Fields. 2018 ; Vuosikerta 31, Nro 4.

Bibtex - Lataa

@article{e9b5a199073546d2a9f8f90ca60c5883,
title = "Efficient Finite Element Method to Estimate Eddy Current Loss due to Random Interlaminar Contacts in Electrical Sheets",
abstract = "Electrical sheets of electrical machines are laminated to reduce eddy current loss. However, a series of punching and pressing processes form random galvanic contacts at the edges of the sheets. These galvanic contacts are random in nature and cause an additional eddy current loss in the laminated cores. In this paper, a stochastic Galerkin finite element method is implemented to consider random interlaminar contacts in the magnetic vector potential formulation. The random interlaminar conductivities at the edges of the electrical sheets are approximated using a conductivity field and propagated through the finite element formulation. The spatial random variation of the conductivity causes the solution to be random, and hence, it is approximated by using a polynomial chaos expansion method. Finally, the additional eddy current losses due to the interlaminar contacts are estimated from a stochastic Galerkin method and compared with a Monte Carlo method. Accuracy and computation time of both models are discussed in the paper.",
author = "Shah, {Sahas Bikram} and Paavo Rasilo and Harri Hakula and Antero Arkkio",
year = "2018",
doi = "10.1002/jnm.2254",
language = "English",
volume = "31",
journal = "International Journal of Numerical Modelling: Electronic Networks, Devices and Fields",
issn = "0894-3370",
publisher = "Wiley",
number = "4",

}

RIS (suitable for import to EndNote) - Lataa

TY - JOUR

T1 - Efficient Finite Element Method to Estimate Eddy Current Loss due to Random Interlaminar Contacts in Electrical Sheets

AU - Shah, Sahas Bikram

AU - Rasilo, Paavo

AU - Hakula, Harri

AU - Arkkio, Antero

PY - 2018

Y1 - 2018

N2 - Electrical sheets of electrical machines are laminated to reduce eddy current loss. However, a series of punching and pressing processes form random galvanic contacts at the edges of the sheets. These galvanic contacts are random in nature and cause an additional eddy current loss in the laminated cores. In this paper, a stochastic Galerkin finite element method is implemented to consider random interlaminar contacts in the magnetic vector potential formulation. The random interlaminar conductivities at the edges of the electrical sheets are approximated using a conductivity field and propagated through the finite element formulation. The spatial random variation of the conductivity causes the solution to be random, and hence, it is approximated by using a polynomial chaos expansion method. Finally, the additional eddy current losses due to the interlaminar contacts are estimated from a stochastic Galerkin method and compared with a Monte Carlo method. Accuracy and computation time of both models are discussed in the paper.

AB - Electrical sheets of electrical machines are laminated to reduce eddy current loss. However, a series of punching and pressing processes form random galvanic contacts at the edges of the sheets. These galvanic contacts are random in nature and cause an additional eddy current loss in the laminated cores. In this paper, a stochastic Galerkin finite element method is implemented to consider random interlaminar contacts in the magnetic vector potential formulation. The random interlaminar conductivities at the edges of the electrical sheets are approximated using a conductivity field and propagated through the finite element formulation. The spatial random variation of the conductivity causes the solution to be random, and hence, it is approximated by using a polynomial chaos expansion method. Finally, the additional eddy current losses due to the interlaminar contacts are estimated from a stochastic Galerkin method and compared with a Monte Carlo method. Accuracy and computation time of both models are discussed in the paper.

U2 - 10.1002/jnm.2254

DO - 10.1002/jnm.2254

M3 - Article

VL - 31

JO - International Journal of Numerical Modelling: Electronic Networks, Devices and Fields

JF - International Journal of Numerical Modelling: Electronic Networks, Devices and Fields

SN - 0894-3370

IS - 4

M1 - e2254

ER -