Finite-element analysis of short-circuit electromagnetic force in power transformer

Hyun Mo Ahn; Ji Yeon Lee; Joong Kyoung Kim; Yeon Ho Oh; Sang Yong Jung; Sung Chin Hahn

doi:10.1109/TIA.2011.2126031

Finite-element analysis of short-circuit electromagnetic force in power transformer

Hyun Mo Ahn, Ji Yeon Lee, Joong Kyoung Kim, Yeon Ho Oh, Sang Yong Jung, Sung Chin Hahn

Research output: Contribution to journal › Article › peer-review

142 Scopus citations

Abstract

Transient electromagnetic forces in radial and axial directions induce critical mechanical stress on windings and transformers. In this paper, short-circuit electromagnetic forces that are exerted on transformer windings are investigated. A 3-D transformer model is considered to calculate the transient electromagnetic forces. The magnetic vector potential, magnetic flux density, and electromagnetic forces due to the short-circuit transient currents applied to the power transformer are analyzed by a coupled electromechanical finite-element method. The results obtained are compared with the analytical results and show good agreement. The numerical modeling technique dealt with in this paper is expected to be useful in the design of power transformers.

Original language	English
Article number	5729325
Pages (from-to)	1267-1272
Number of pages	6
Journal	IEEE Transactions on Industry Applications
Volume	47
Issue number	3
DOIs	https://doi.org/10.1109/TIA.2011.2126031
State	Published - 1 Jun 2011
Externally published	Yes

Keywords

Electromagnetic force
finite-element method
power transformer
short-circuit current
short-circuit force

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10.1109/TIA.2011.2126031

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title = "Finite-element analysis of short-circuit electromagnetic force in power transformer",

abstract = "Transient electromagnetic forces in radial and axial directions induce critical mechanical stress on windings and transformers. In this paper, short-circuit electromagnetic forces that are exerted on transformer windings are investigated. A 3-D transformer model is considered to calculate the transient electromagnetic forces. The magnetic vector potential, magnetic flux density, and electromagnetic forces due to the short-circuit transient currents applied to the power transformer are analyzed by a coupled electromechanical finite-element method. The results obtained are compared with the analytical results and show good agreement. The numerical modeling technique dealt with in this paper is expected to be useful in the design of power transformers.",

keywords = "Electromagnetic force, finite-element method, power transformer, short-circuit current, short-circuit force",

author = "Ahn, \{Hyun Mo\} and Lee, \{Ji Yeon\} and Kim, \{Joong Kyoung\} and Oh, \{Yeon Ho\} and Jung, \{Sang Yong\} and Hahn, \{Sung Chin\}",

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AU - Ahn, Hyun Mo

AU - Lee, Ji Yeon

AU - Kim, Joong Kyoung

AU - Oh, Yeon Ho

AU - Jung, Sang Yong

AU - Hahn, Sung Chin

PY - 2011/6/1

Y1 - 2011/6/1

N2 - Transient electromagnetic forces in radial and axial directions induce critical mechanical stress on windings and transformers. In this paper, short-circuit electromagnetic forces that are exerted on transformer windings are investigated. A 3-D transformer model is considered to calculate the transient electromagnetic forces. The magnetic vector potential, magnetic flux density, and electromagnetic forces due to the short-circuit transient currents applied to the power transformer are analyzed by a coupled electromechanical finite-element method. The results obtained are compared with the analytical results and show good agreement. The numerical modeling technique dealt with in this paper is expected to be useful in the design of power transformers.

AB - Transient electromagnetic forces in radial and axial directions induce critical mechanical stress on windings and transformers. In this paper, short-circuit electromagnetic forces that are exerted on transformer windings are investigated. A 3-D transformer model is considered to calculate the transient electromagnetic forces. The magnetic vector potential, magnetic flux density, and electromagnetic forces due to the short-circuit transient currents applied to the power transformer are analyzed by a coupled electromechanical finite-element method. The results obtained are compared with the analytical results and show good agreement. The numerical modeling technique dealt with in this paper is expected to be useful in the design of power transformers.

KW - Electromagnetic force

KW - finite-element method

KW - power transformer

KW - short-circuit current

KW - short-circuit force

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M3 - Article

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Finite-element analysis of short-circuit electromagnetic force in power transformer

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Keywords

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