Numerical evaluation of AC losses in HTS wires with 2D FEM formulated by self magnetic field

Kazuhiro Kajikawa; Toshihiro Hayashi; Ryoji Yoshida; Masataka Iwakuma; Kazuo Funaki

doi:10.1109/TASC.2003.812415

Numerical evaluation of AC losses in HTS wires with 2D FEM formulated by self magnetic field

Kazuhiro Kajikawa, Toshihiro Hayashi, Ryoji Yoshida, Masataka Iwakuma, Kazuo Funaki

Research output: Contribution to journal › Conference article › peer-review

69 Citations (Scopus)

Abstract

The ac losses of high critical-temperature superconducting (HTS) wires are numerically calculated by means of a finite element method (FEM), which is formulated with a self magnetic field due to an induced current as unknown. The numerical model is straight HTS wires carrying an alternating transport current in an external ac magnetic field perpendicular to the wire axis. In this situation, the electromagnetic field around the wires is given by two-dimensional (2D) Maxwell's equations. It is also assumed that the transport property is represented by either the critical state model or the power-law model, in which the electric field is proportional to the power of the current density. The obtained losses are compared with conventional theoretical curves in several simple geometries.

Original language	English
Pages (from-to)	3630-3633
Number of pages	4
Journal	IEEE Transactions on Applied Superconductivity
Volume	13
Issue number	2 III
DOIs	https://doi.org/10.1109/TASC.2003.812415
Publication status	Published - Jun 2003
Event	2002 Applied Superconductivity Conference - Houston, TX, United States Duration: Aug 4 2002 → Aug 9 2002

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

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10.1109/TASC.2003.812415

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title = "Numerical evaluation of AC losses in HTS wires with 2D FEM formulated by self magnetic field",

abstract = "The ac losses of high critical-temperature superconducting (HTS) wires are numerically calculated by means of a finite element method (FEM), which is formulated with a self magnetic field due to an induced current as unknown. The numerical model is straight HTS wires carrying an alternating transport current in an external ac magnetic field perpendicular to the wire axis. In this situation, the electromagnetic field around the wires is given by two-dimensional (2D) Maxwell's equations. It is also assumed that the transport property is represented by either the critical state model or the power-law model, in which the electric field is proportional to the power of the current density. The obtained losses are compared with conventional theoretical curves in several simple geometries.",

author = "Kazuhiro Kajikawa and Toshihiro Hayashi and Ryoji Yoshida and Masataka Iwakuma and Kazuo Funaki",

year = "2003",

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doi = "10.1109/TASC.2003.812415",

language = "English",

volume = "13",

pages = "3630--3633",

journal = "IEEE Transactions on Applied Superconductivity",

issn = "1051-8223",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

number = "2 III",

note = "2002 Applied Superconductivity Conference ; Conference date: 04-08-2002 Through 09-08-2002",

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T1 - Numerical evaluation of AC losses in HTS wires with 2D FEM formulated by self magnetic field

AU - Kajikawa, Kazuhiro

AU - Hayashi, Toshihiro

AU - Yoshida, Ryoji

AU - Iwakuma, Masataka

AU - Funaki, Kazuo

PY - 2003/6

Y1 - 2003/6

N2 - The ac losses of high critical-temperature superconducting (HTS) wires are numerically calculated by means of a finite element method (FEM), which is formulated with a self magnetic field due to an induced current as unknown. The numerical model is straight HTS wires carrying an alternating transport current in an external ac magnetic field perpendicular to the wire axis. In this situation, the electromagnetic field around the wires is given by two-dimensional (2D) Maxwell's equations. It is also assumed that the transport property is represented by either the critical state model or the power-law model, in which the electric field is proportional to the power of the current density. The obtained losses are compared with conventional theoretical curves in several simple geometries.

AB - The ac losses of high critical-temperature superconducting (HTS) wires are numerically calculated by means of a finite element method (FEM), which is formulated with a self magnetic field due to an induced current as unknown. The numerical model is straight HTS wires carrying an alternating transport current in an external ac magnetic field perpendicular to the wire axis. In this situation, the electromagnetic field around the wires is given by two-dimensional (2D) Maxwell's equations. It is also assumed that the transport property is represented by either the critical state model or the power-law model, in which the electric field is proportional to the power of the current density. The obtained losses are compared with conventional theoretical curves in several simple geometries.

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DO - 10.1109/TASC.2003.812415

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SN - 1051-8223

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JO - IEEE Transactions on Applied Superconductivity

JF - IEEE Transactions on Applied Superconductivity

IS - 2 III

T2 - 2002 Applied Superconductivity Conference

Y2 - 4 August 2002 through 9 August 2002

ER -

Numerical evaluation of AC losses in HTS wires with 2D FEM formulated by self magnetic field

Abstract

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