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 | |
| Publication status | Published - 2017 Jul 6 |
| Externally published | Yes |
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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
Cite this
Experimental and theoretical study of AC losses in variable asymmetrical magnetic environments. / Ranecky, S. T.; Watanabe, H.; Ogawa, J.; Oka, Tetsuo; Gölden, D.; Alff, L.; Genenko, Y. A.
In: Superconductor Science and Technology, Vol. 30, No. 8, 085005, 06.07.2017.Research output: Contribution to journal › Article
}
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, Tetsuo
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
VL - 30
JO - Superconductor Science and Technology
JF - Superconductor Science and Technology
SN - 0953-2048
IS - 8
M1 - 085005
ER -