Influence of AC external magnetic field perturbation on trapped magnetic field in HTS bulk

J. Ogawa, M. Iwamoto, K. Yamagishi, O. Tsukamoto, Masato Murakami, M. Tomita

Research output: Contribution to journalArticle

48 Citations (Scopus)

Abstract

Electric motors and actuators are most promising future applications of HTS bulks. The HTS bulks in these electric machines are exposed to AC magnetic field perturbations. The perturbations cause AC losses in the bulks and also affect the magnetic field trapped in the bulks. In a previous work we measured AC losses in a YBCO bulk subject to the AC magnetic field and found the loss characteristics well followed the Bean model. In this work we experimentally studied the influence of the AC perturbations of the external magnetic field on the trapped field in a YBCO bulk. The experimental results showed that the application of the AC magnetic field decreased the trapped magnetic field even to zero. In this paper, the experimental results are presented and a reason for the decay of the trapped magnetic field is discussed based on the Bean model.

Original languageEnglish
Pages (from-to)26-30
Number of pages5
JournalPhysica C: Superconductivity and its Applications
Volume386
DOIs
Publication statusPublished - 2003 Apr 15
Externally publishedYes

Fingerprint

trapped magnetic fields
alternating current
Magnetic fields
perturbation
magnetic fields
electric motors
Electric actuators
Electric machinery
Electric motors
actuators
causes
decay

Keywords

  • AC loss
  • HTS bulk
  • Motor
  • Trapped magnetic field

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Influence of AC external magnetic field perturbation on trapped magnetic field in HTS bulk. / Ogawa, J.; Iwamoto, M.; Yamagishi, K.; Tsukamoto, O.; Murakami, Masato; Tomita, M.

In: Physica C: Superconductivity and its Applications, Vol. 386, 15.04.2003, p. 26-30.

Research output: Contribution to journalArticle

Ogawa, J. ; Iwamoto, M. ; Yamagishi, K. ; Tsukamoto, O. ; Murakami, Masato ; Tomita, M. / Influence of AC external magnetic field perturbation on trapped magnetic field in HTS bulk. In: Physica C: Superconductivity and its Applications. 2003 ; Vol. 386. pp. 26-30.
@article{92d9173eed504a8f9392763e96a132ae,
title = "Influence of AC external magnetic field perturbation on trapped magnetic field in HTS bulk",
abstract = "Electric motors and actuators are most promising future applications of HTS bulks. The HTS bulks in these electric machines are exposed to AC magnetic field perturbations. The perturbations cause AC losses in the bulks and also affect the magnetic field trapped in the bulks. In a previous work we measured AC losses in a YBCO bulk subject to the AC magnetic field and found the loss characteristics well followed the Bean model. In this work we experimentally studied the influence of the AC perturbations of the external magnetic field on the trapped field in a YBCO bulk. The experimental results showed that the application of the AC magnetic field decreased the trapped magnetic field even to zero. In this paper, the experimental results are presented and a reason for the decay of the trapped magnetic field is discussed based on the Bean model.",
keywords = "AC loss, HTS bulk, Motor, Trapped magnetic field",
author = "J. Ogawa and M. Iwamoto and K. Yamagishi and O. Tsukamoto and Masato Murakami and M. Tomita",
year = "2003",
month = "4",
day = "15",
doi = "10.1016/S0921-4534(02)02114-7",
language = "English",
volume = "386",
pages = "26--30",
journal = "Physica C: Superconductivity and its Applications",
issn = "0921-4534",
publisher = "Elsevier",

}

TY - JOUR

T1 - Influence of AC external magnetic field perturbation on trapped magnetic field in HTS bulk

AU - Ogawa, J.

AU - Iwamoto, M.

AU - Yamagishi, K.

AU - Tsukamoto, O.

AU - Murakami, Masato

AU - Tomita, M.

PY - 2003/4/15

Y1 - 2003/4/15

N2 - Electric motors and actuators are most promising future applications of HTS bulks. The HTS bulks in these electric machines are exposed to AC magnetic field perturbations. The perturbations cause AC losses in the bulks and also affect the magnetic field trapped in the bulks. In a previous work we measured AC losses in a YBCO bulk subject to the AC magnetic field and found the loss characteristics well followed the Bean model. In this work we experimentally studied the influence of the AC perturbations of the external magnetic field on the trapped field in a YBCO bulk. The experimental results showed that the application of the AC magnetic field decreased the trapped magnetic field even to zero. In this paper, the experimental results are presented and a reason for the decay of the trapped magnetic field is discussed based on the Bean model.

AB - Electric motors and actuators are most promising future applications of HTS bulks. The HTS bulks in these electric machines are exposed to AC magnetic field perturbations. The perturbations cause AC losses in the bulks and also affect the magnetic field trapped in the bulks. In a previous work we measured AC losses in a YBCO bulk subject to the AC magnetic field and found the loss characteristics well followed the Bean model. In this work we experimentally studied the influence of the AC perturbations of the external magnetic field on the trapped field in a YBCO bulk. The experimental results showed that the application of the AC magnetic field decreased the trapped magnetic field even to zero. In this paper, the experimental results are presented and a reason for the decay of the trapped magnetic field is discussed based on the Bean model.

KW - AC loss

KW - HTS bulk

KW - Motor

KW - Trapped magnetic field

UR - http://www.scopus.com/inward/record.url?scp=0037445745&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0037445745&partnerID=8YFLogxK

U2 - 10.1016/S0921-4534(02)02114-7

DO - 10.1016/S0921-4534(02)02114-7

M3 - Article

AN - SCOPUS:0037445745

VL - 386

SP - 26

EP - 30

JO - Physica C: Superconductivity and its Applications

JF - Physica C: Superconductivity and its Applications

SN - 0921-4534

ER -