Experimental and theoretical study of AC losses in variable asymmetrical magnetic environments

S. T. Ranecky; H. Watanabe; J. Ogawa; T. Oka; D. Gölden; L. Alff; Y. A. Genenko

doi:10.1088/1361-6668/aa73bc

Experimental and theoretical study of AC losses in variable asymmetrical magnetic environments

S. T. Ranecky, H. Watanabe, J. Ogawa, T. Oka, D. Gölden, L. Alff, Y. A. Genenko

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

5 Citations (Scopus)

Abstract

Measurements of AC losses in a HTS-tape placed in between two bulk magnetic shields of high permeability were performed by applying calorimetric techniques for various asymmetrical shielding arrangements. The experiment was supported by analytical calculations and finite-element simulations of the field and current distributions, based on the Bean model of the critical state. The simulated current and field profiles perfectly reproduce the analytic solutions known for certain shielding geometries. The evaluation of the consequent AC losses exhibits good agreement with measurements for the central position of the tape between the magnets but have increasing discrepancy when the tape is approaching the shields. This can be explained by the increasing contribution of the eddy currents and magnetic hysteresis losses in the conducting shields.

Original language	English
Article number	085005
Journal	Superconductor Science and Technology
Volume	30
Issue number	8
DOIs	https://doi.org/10.1088/1361-6668/aa73bc
Publication status	Published - 2017 Jul 6
Externally published	Yes

Keywords

AC losses
magnetic environments
superconductor strip

ASJC Scopus subject areas

Ceramics and Composites
Condensed Matter Physics
Metals and Alloys
Electrical and Electronic Engineering
Materials Chemistry

Access to Document

10.1088/1361-6668/aa73bc

Cite this

@article{56ddabb300f04afa8c7160f561445e41,

title = "Experimental and theoretical study of AC losses in variable asymmetrical magnetic environments",

abstract = "Measurements of AC losses in a HTS-tape placed in between two bulk magnetic shields of high permeability were performed by applying calorimetric techniques for various asymmetrical shielding arrangements. The experiment was supported by analytical calculations and finite-element simulations of the field and current distributions, based on the Bean model of the critical state. The simulated current and field profiles perfectly reproduce the analytic solutions known for certain shielding geometries. The evaluation of the consequent AC losses exhibits good agreement with measurements for the central position of the tape between the magnets but have increasing discrepancy when the tape is approaching the shields. This can be explained by the increasing contribution of the eddy currents and magnetic hysteresis losses in the conducting shields.",

keywords = "AC losses, magnetic environments, superconductor strip",

author = "Ranecky, {S. T.} and H. Watanabe and J. Ogawa and T. Oka and D. G{\"o}lden and L. Alff and Genenko, {Y. A.}",

note = "Funding Information: Support from the Scholarship Program of Japanese Student Services Organization is gratefully acknowledged. Publisher Copyright: {\textcopyright} 2017 IOP Publishing Ltd.",

year = "2017",

month = jul,

day = "6",

doi = "10.1088/1361-6668/aa73bc",

language = "English",

volume = "30",

journal = "Superconductor Science and Technology",

issn = "0953-2048",

publisher = "IOP Publishing Ltd.",

number = "8",

}

TY - JOUR

T1 - Experimental and theoretical study of AC losses in variable asymmetrical magnetic environments

AU - Ranecky, S. T.

AU - Watanabe, H.

AU - Ogawa, J.

AU - Oka, T.

AU - Gölden, D.

AU - Alff, L.

AU - Genenko, Y. A.

PY - 2017/7/6

Y1 - 2017/7/6

N2 - Measurements of AC losses in a HTS-tape placed in between two bulk magnetic shields of high permeability were performed by applying calorimetric techniques for various asymmetrical shielding arrangements. The experiment was supported by analytical calculations and finite-element simulations of the field and current distributions, based on the Bean model of the critical state. The simulated current and field profiles perfectly reproduce the analytic solutions known for certain shielding geometries. The evaluation of the consequent AC losses exhibits good agreement with measurements for the central position of the tape between the magnets but have increasing discrepancy when the tape is approaching the shields. This can be explained by the increasing contribution of the eddy currents and magnetic hysteresis losses in the conducting shields.

AB - Measurements of AC losses in a HTS-tape placed in between two bulk magnetic shields of high permeability were performed by applying calorimetric techniques for various asymmetrical shielding arrangements. The experiment was supported by analytical calculations and finite-element simulations of the field and current distributions, based on the Bean model of the critical state. The simulated current and field profiles perfectly reproduce the analytic solutions known for certain shielding geometries. The evaluation of the consequent AC losses exhibits good agreement with measurements for the central position of the tape between the magnets but have increasing discrepancy when the tape is approaching the shields. This can be explained by the increasing contribution of the eddy currents and magnetic hysteresis losses in the conducting shields.

KW - AC losses

KW - magnetic environments

KW - superconductor strip

UR - http://www.scopus.com/inward/record.url?scp=85029511551&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85029511551&partnerID=8YFLogxK

U2 - 10.1088/1361-6668/aa73bc

DO - 10.1088/1361-6668/aa73bc

M3 - Article

AN - SCOPUS:85029511551

VL - 30

JO - Superconductor Science and Technology

JF - Superconductor Science and Technology

SN - 0953-2048

IS - 8

M1 - 085005

ER -

Experimental and theoretical study of AC losses in variable asymmetrical magnetic environments

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this