Domain decomposition with subdomain pre-processing for finite element modelling of transformers with stranded conductors

Ismet Tuna Gürbüz; Antti Lehikoinen; Ugur Aydin; Paavo Rasilo; Eelis Takala; Anouar Belahcen

doi:10.1063/1.5130076

Domain decomposition with subdomain pre-processing for finite element modelling of transformers with stranded conductors

Ismet Tuna Gürbüz, Antti Lehikoinen, Ugur Aydin, Paavo Rasilo, Eelis Takala, Anouar Belahcen

Tutkimustuotos: Lehtiartikkeli › Article › Scientific › vertaisarvioitu

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68 Lataukset (Pure)

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Finite element analysis of transformers with stranded conductors can be computationally heavy due to the fine mesh required for winding domains. In this paper, a domain decomposition method with subdomain pre-processing is proposed to overcome with this problem. In order to solve the field-circuit problem with finite element analysis, the winding domain is modelled initially. Next, the reduced matrix system is obtained from the winding domain formulation. The solution of the entire problem is obtained by solving the winding domain formulation and the reduced matrix system separately. The method is tested on a transformer model in no load operation. Accurate solutions are obtained in both frequency and time domains 7-9 times faster than when using brute-force method.

Alkuperäiskieli	Englanti
Artikkeli	015133
Sivumäärä	7
Julkaisu	AIP Advances
Vuosikerta	10
Numero	1
DOI - pysyväislinkit	https://doi.org/10.1063/1.5130076
Tila	Julkaistu - 16 tammik. 2020
OKM-julkaisutyyppi	A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Tapahtuma	Annual Conference on Magnetism and Magnetic Materials - Las Vegas, Yhdysvallat Kesto: 4 marrask. 2019 → 8 marrask. 2019 Konferenssinumero: 64

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10.1063/1.5130076Lisenssi: CC BY

ELEC_Gurbuz_etal_Domain-Decomposition_AIPAdv_10_015133_finalpublishedversionFinal published version, 1,92 MBLisenssi: CC BY

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abstract = "Finite element analysis of transformers with stranded conductors can be computationally heavy due to the fine mesh required for winding domains. In this paper, a domain decomposition method with subdomain pre-processing is proposed to overcome with this problem. In order to solve the field-circuit problem with finite element analysis, the winding domain is modelled initially. Next, the reduced matrix system is obtained from the winding domain formulation. The solution of the entire problem is obtained by solving the winding domain formulation and the reduced matrix system separately. The method is tested on a transformer model in no load operation. Accurate solutions are obtained in both frequency and time domains 7-9 times faster than when using brute-force method.",

author = "G{\"u}rb{\"u}z, {Ismet Tuna} and Antti Lehikoinen and Ugur Aydin and Paavo Rasilo and Eelis Takala and Anouar Belahcen",

year = "2020",

month = jan,

day = "16",

doi = "10.1063/1.5130076",

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journal = "AIP Advances",

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note = "Annual Conference on Magnetism and Magnetic Materials, MMM ; Conference date: 04-11-2019 Through 08-11-2019",

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T1 - Domain decomposition with subdomain pre-processing for finite element modelling of transformers with stranded conductors

AU - Gürbüz, Ismet Tuna

AU - Lehikoinen, Antti

AU - Aydin, Ugur

AU - Rasilo, Paavo

AU - Takala, Eelis

AU - Belahcen, Anouar

N1 - Conference code: 64

PY - 2020/1/16

Y1 - 2020/1/16

N2 - Finite element analysis of transformers with stranded conductors can be computationally heavy due to the fine mesh required for winding domains. In this paper, a domain decomposition method with subdomain pre-processing is proposed to overcome with this problem. In order to solve the field-circuit problem with finite element analysis, the winding domain is modelled initially. Next, the reduced matrix system is obtained from the winding domain formulation. The solution of the entire problem is obtained by solving the winding domain formulation and the reduced matrix system separately. The method is tested on a transformer model in no load operation. Accurate solutions are obtained in both frequency and time domains 7-9 times faster than when using brute-force method.

AB - Finite element analysis of transformers with stranded conductors can be computationally heavy due to the fine mesh required for winding domains. In this paper, a domain decomposition method with subdomain pre-processing is proposed to overcome with this problem. In order to solve the field-circuit problem with finite element analysis, the winding domain is modelled initially. Next, the reduced matrix system is obtained from the winding domain formulation. The solution of the entire problem is obtained by solving the winding domain formulation and the reduced matrix system separately. The method is tested on a transformer model in no load operation. Accurate solutions are obtained in both frequency and time domains 7-9 times faster than when using brute-force method.

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U2 - 10.1063/1.5130076

DO - 10.1063/1.5130076

M3 - Article

SN - 2158-3226

VL - 10

JO - AIP Advances

JF - AIP Advances

IS - 1

M1 - 015133

T2 - Annual Conference on Magnetism and Magnetic Materials

Y2 - 4 November 2019 through 8 November 2019

ER -

Domain decomposition with subdomain pre-processing for finite element modelling of transformers with stranded conductors

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