Proposal of magnetic circuit using magnetic shielding with bulk-type high-Tc superconductors - Evaluation of magnetic circuits using toroidal core

Katsuhiro Fukuoka, Mitsuo Hashimoto, Masaru Tomita, Masato Murakami

Research output: Contribution to journalArticle

Abstract

Recently, bulk-type high-Tc superconductors (HTSs) having a characteristic of critical current density over 104 A/cm2 in liquid nitrogen (77 K) and at 1 T have been produced. They are promising for many practical applications such as a magnetic bearing, a magnetic levitation, a flywheel, a magnetic shielding, and others. In this research, we propose a magnetic circuit that can be used as a magnetic shield for several superconductors as an application of the HTS. It is a closed magnetic circuit by means of a toroidal core. Characteristics of the magnetic circuit surrounded with HTSs are evaluated and the possibility is examined. Because the magnetic circuit of the ferrite core is surrounded with HTSs, the magnetic flux is shielded even if it leaks from the ferrite core.

Original languageEnglish
Pages (from-to)1-10
Number of pages10
JournalElectrical Engineering in Japan (English translation of Denki Gakkai Ronbunshi)
Volume147
Issue number4
DOIs
Publication statusPublished - 2004 Jun
Externally publishedYes

Fingerprint

Magnetic shielding
Magnetic circuits
Superconducting materials
Ferrite
Critical current density (superconductivity)
Magnetic levitation
Magnetic bearings
Flywheels
Liquid nitrogen
Magnetic flux

Keywords

  • Bulk-type high-T superconductor
  • Leakage flux
  • Magnetic circuit
  • Magnetic shielding

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

@article{842e95055bb547afb7fd06ed38822bce,
title = "Proposal of magnetic circuit using magnetic shielding with bulk-type high-Tc superconductors - Evaluation of magnetic circuits using toroidal core",
abstract = "Recently, bulk-type high-Tc superconductors (HTSs) having a characteristic of critical current density over 104 A/cm2 in liquid nitrogen (77 K) and at 1 T have been produced. They are promising for many practical applications such as a magnetic bearing, a magnetic levitation, a flywheel, a magnetic shielding, and others. In this research, we propose a magnetic circuit that can be used as a magnetic shield for several superconductors as an application of the HTS. It is a closed magnetic circuit by means of a toroidal core. Characteristics of the magnetic circuit surrounded with HTSs are evaluated and the possibility is examined. Because the magnetic circuit of the ferrite core is surrounded with HTSs, the magnetic flux is shielded even if it leaks from the ferrite core.",
keywords = "Bulk-type high-T superconductor, Leakage flux, Magnetic circuit, Magnetic shielding",
author = "Katsuhiro Fukuoka and Mitsuo Hashimoto and Masaru Tomita and Masato Murakami",
year = "2004",
month = "6",
doi = "10.1002/eej.10337",
language = "English",
volume = "147",
pages = "1--10",
journal = "Electrical Engineering in Japan (English translation of Denki Gakkai Ronbunshi)",
issn = "0424-7760",
publisher = "John Wiley and Sons Inc.",
number = "4",

}

TY - JOUR

T1 - Proposal of magnetic circuit using magnetic shielding with bulk-type high-Tc superconductors - Evaluation of magnetic circuits using toroidal core

AU - Fukuoka, Katsuhiro

AU - Hashimoto, Mitsuo

AU - Tomita, Masaru

AU - Murakami, Masato

PY - 2004/6

Y1 - 2004/6

N2 - Recently, bulk-type high-Tc superconductors (HTSs) having a characteristic of critical current density over 104 A/cm2 in liquid nitrogen (77 K) and at 1 T have been produced. They are promising for many practical applications such as a magnetic bearing, a magnetic levitation, a flywheel, a magnetic shielding, and others. In this research, we propose a magnetic circuit that can be used as a magnetic shield for several superconductors as an application of the HTS. It is a closed magnetic circuit by means of a toroidal core. Characteristics of the magnetic circuit surrounded with HTSs are evaluated and the possibility is examined. Because the magnetic circuit of the ferrite core is surrounded with HTSs, the magnetic flux is shielded even if it leaks from the ferrite core.

AB - Recently, bulk-type high-Tc superconductors (HTSs) having a characteristic of critical current density over 104 A/cm2 in liquid nitrogen (77 K) and at 1 T have been produced. They are promising for many practical applications such as a magnetic bearing, a magnetic levitation, a flywheel, a magnetic shielding, and others. In this research, we propose a magnetic circuit that can be used as a magnetic shield for several superconductors as an application of the HTS. It is a closed magnetic circuit by means of a toroidal core. Characteristics of the magnetic circuit surrounded with HTSs are evaluated and the possibility is examined. Because the magnetic circuit of the ferrite core is surrounded with HTSs, the magnetic flux is shielded even if it leaks from the ferrite core.

KW - Bulk-type high-T superconductor

KW - Leakage flux

KW - Magnetic circuit

KW - Magnetic shielding

UR - http://www.scopus.com/inward/record.url?scp=2442624869&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=2442624869&partnerID=8YFLogxK

U2 - 10.1002/eej.10337

DO - 10.1002/eej.10337

M3 - Article

AN - SCOPUS:2442624869

VL - 147

SP - 1

EP - 10

JO - Electrical Engineering in Japan (English translation of Denki Gakkai Ronbunshi)

JF - Electrical Engineering in Japan (English translation of Denki Gakkai Ronbunshi)

SN - 0424-7760

IS - 4

ER -