Experimental Test and Analysis of AC Losses in Multifilamentary MgB 2 Wire

Jiawen Xi, Xiaoze Pei, Jie Sheng, Hideki Tanaka, Yota Ichiki, Min Zhang, Weijia Yuan

Research output: Contribution to journalArticle

23 Downloads (Pure)

Abstract

AC losses in superconductors are essential for the design of cooling system for large scale power applications. Magnesium diboride (MgB 2 ) superconducting wires have been investigated and manufactured over the last decade due to cheap raw materials and flexibility for coil design. In addition, multifilamentary MgB 2 wires have been manufactured to reduce ac losses. In this paper, self-field ac losses of multifilamentary MgB 2 wires with magnetic barrier are investigated using both experimental and numerical methods. A short straight wire sample and a coil sample are tested under various temperatures and frequencies between 16-and 128-Hz. The test results show that the transportation loss is independent of the operating temperature. On basis of both theoretical and numerical study, it is found that hysteresis loss in superconductor accounts only for a small fraction of the transportation losses, ferromagnetic hysteresis loss in the magnetic barrier dominates when the transport current is low, whereas eddy current loss dominates when the transport current is close to the critical current.

Original languageEnglish
Article number8201205
JournalIEEE Transactions on Applied Superconductivity
Volume29
Issue number5
Early online date8 Mar 2019
DOIs
Publication statusPublished - 1 Aug 2019

ASJC Scopus subject areas

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

Cite this

Experimental Test and Analysis of AC Losses in Multifilamentary MgB 2 Wire. / Xi, Jiawen; Pei, Xiaoze; Sheng, Jie; Tanaka, Hideki; Ichiki, Yota; Zhang, Min; Yuan, Weijia.

In: IEEE Transactions on Applied Superconductivity, Vol. 29, No. 5, 8201205, 01.08.2019.

Research output: Contribution to journalArticle

Xi, Jiawen ; Pei, Xiaoze ; Sheng, Jie ; Tanaka, Hideki ; Ichiki, Yota ; Zhang, Min ; Yuan, Weijia. / Experimental Test and Analysis of AC Losses in Multifilamentary MgB 2 Wire. In: IEEE Transactions on Applied Superconductivity. 2019 ; Vol. 29, No. 5.
@article{d5b5e0f238b94954b571c6b51f19fabc,
title = "Experimental Test and Analysis of AC Losses in Multifilamentary MgB 2 Wire",
abstract = "AC losses in superconductors are essential for the design of cooling system for large scale power applications. Magnesium diboride (MgB 2 ) superconducting wires have been investigated and manufactured over the last decade due to cheap raw materials and flexibility for coil design. In addition, multifilamentary MgB 2 wires have been manufactured to reduce ac losses. In this paper, self-field ac losses of multifilamentary MgB 2 wires with magnetic barrier are investigated using both experimental and numerical methods. A short straight wire sample and a coil sample are tested under various temperatures and frequencies between 16-and 128-Hz. The test results show that the transportation loss is independent of the operating temperature. On basis of both theoretical and numerical study, it is found that hysteresis loss in superconductor accounts only for a small fraction of the transportation losses, ferromagnetic hysteresis loss in the magnetic barrier dominates when the transport current is low, whereas eddy current loss dominates when the transport current is close to the critical current.",
author = "Jiawen Xi and Xiaoze Pei and Jie Sheng and Hideki Tanaka and Yota Ichiki and Min Zhang and Weijia Yuan",
year = "2019",
month = "8",
day = "1",
doi = "10.1109/TASC.2019.2903924",
language = "English",
volume = "29",
journal = "IEEE Transactions on Applied Superconductivity",
issn = "1051-8223",
publisher = "IEEE",
number = "5",

}

TY - JOUR

T1 - Experimental Test and Analysis of AC Losses in Multifilamentary MgB 2 Wire

AU - Xi, Jiawen

AU - Pei, Xiaoze

AU - Sheng, Jie

AU - Tanaka, Hideki

AU - Ichiki, Yota

AU - Zhang, Min

AU - Yuan, Weijia

PY - 2019/8/1

Y1 - 2019/8/1

N2 - AC losses in superconductors are essential for the design of cooling system for large scale power applications. Magnesium diboride (MgB 2 ) superconducting wires have been investigated and manufactured over the last decade due to cheap raw materials and flexibility for coil design. In addition, multifilamentary MgB 2 wires have been manufactured to reduce ac losses. In this paper, self-field ac losses of multifilamentary MgB 2 wires with magnetic barrier are investigated using both experimental and numerical methods. A short straight wire sample and a coil sample are tested under various temperatures and frequencies between 16-and 128-Hz. The test results show that the transportation loss is independent of the operating temperature. On basis of both theoretical and numerical study, it is found that hysteresis loss in superconductor accounts only for a small fraction of the transportation losses, ferromagnetic hysteresis loss in the magnetic barrier dominates when the transport current is low, whereas eddy current loss dominates when the transport current is close to the critical current.

AB - AC losses in superconductors are essential for the design of cooling system for large scale power applications. Magnesium diboride (MgB 2 ) superconducting wires have been investigated and manufactured over the last decade due to cheap raw materials and flexibility for coil design. In addition, multifilamentary MgB 2 wires have been manufactured to reduce ac losses. In this paper, self-field ac losses of multifilamentary MgB 2 wires with magnetic barrier are investigated using both experimental and numerical methods. A short straight wire sample and a coil sample are tested under various temperatures and frequencies between 16-and 128-Hz. The test results show that the transportation loss is independent of the operating temperature. On basis of both theoretical and numerical study, it is found that hysteresis loss in superconductor accounts only for a small fraction of the transportation losses, ferromagnetic hysteresis loss in the magnetic barrier dominates when the transport current is low, whereas eddy current loss dominates when the transport current is close to the critical current.

UR - http://www.scopus.com/inward/record.url?scp=85064073469&partnerID=8YFLogxK

U2 - 10.1109/TASC.2019.2903924

DO - 10.1109/TASC.2019.2903924

M3 - Article

VL - 29

JO - IEEE Transactions on Applied Superconductivity

JF - IEEE Transactions on Applied Superconductivity

SN - 1051-8223

IS - 5

M1 - 8201205

ER -