The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. ex. Some numerals are expressed as "XNUMX".
Copyrights notice
The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
혼합 상태에서 고열전율 초전도체(HTS) 판의 자기 차폐 성능을 수치적으로 조사했습니다. HTS 판의 결정학적 이방성을 고려하여 축대칭 차폐판은 다중 박층 구조를 갖는 것으로 가정됩니다. 가정 하에서 차폐 전류 밀도의 지배 방정식은 스칼라 함수로 표현될 수 있습니다. 방정식을 통합하기 위한 수치 코드가 개발되었으며, 이 코드를 사용하여 혼합 상태의 축대칭 HTS 판에 대한 차폐 전류 밀도와 감쇠 계수를 계산합니다. 계산 결과는 차폐 전류 밀도가 고주파 자기장 아래 가장자리 주변에 국한됨을 보여줍니다. 인가된 자기장의 주파수가 증가함에 따라 국재화가 현저해지고 자속 흐름이 발생할 때까지 차폐 전류 밀도가 더 커집니다. 또한, HTS 판의 자기 차폐 성능은 100Hz 이하의 저주파 자기장에서는 시간에 따라 급격하게 변화하는 반면, 고주파 자기장에서는 거의 시간 독립적입니다. 더욱이, HTS 판은 혼합된 상태에서도 고주파수로 교류 자기장을 차폐할 수 있는 것으로 밝혀졌다.
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부
Atsushi KAMITANI, Shigetoshi OHSHIMA, "Magnetic Shielding Analysis of Axisymmetric HTS Plates in Mixed State" in IEICE TRANSACTIONS on Electronics,
vol. E82-C, no. 5, pp. 766-773, May 1999, doi: .
Abstract: The magnetic shielding performance of the high-Tc superconducting (HTS) plate in a mixed state has been investigated numerically. By taking account of the crystallographic anisotropy of the HTS plate, the axisymmetric shielding plate is assumed to have a multiple thin-layer structure. Under the assumptions, the governing equations of the shielding current density can be expressed in terms of a scalar function. The numerical code to integrate the equation has been developed and, by use of the code, the shielding current density and the damping coefficient are calculated for the axisymmetric HTS plate in a mixed state. The results of computations show that the shielding current density localizes around the edge under the high-frequency magnetic field. With an increasing frequency of the applied magnetic field, the localization becomes remarkable and the shielding current density becomes larger until the flux flow occurs. In addition, the magnetic shielding performance of the HTS plate drastically changes with time under the low-frequency magnetic field below 100 Hz, whereas it is almost time-independent under the high-frequency magnetic field. Moreover, it turns out that the HTS plate can shield ac magnetic fields with a high frequency even if it remains in a mixed state.
URL: https://global.ieice.org/en_transactions/electronics/10.1587/e82-c_5_766/_p
부
@ARTICLE{e82-c_5_766,
author={Atsushi KAMITANI, Shigetoshi OHSHIMA, },
journal={IEICE TRANSACTIONS on Electronics},
title={Magnetic Shielding Analysis of Axisymmetric HTS Plates in Mixed State},
year={1999},
volume={E82-C},
number={5},
pages={766-773},
abstract={The magnetic shielding performance of the high-Tc superconducting (HTS) plate in a mixed state has been investigated numerically. By taking account of the crystallographic anisotropy of the HTS plate, the axisymmetric shielding plate is assumed to have a multiple thin-layer structure. Under the assumptions, the governing equations of the shielding current density can be expressed in terms of a scalar function. The numerical code to integrate the equation has been developed and, by use of the code, the shielding current density and the damping coefficient are calculated for the axisymmetric HTS plate in a mixed state. The results of computations show that the shielding current density localizes around the edge under the high-frequency magnetic field. With an increasing frequency of the applied magnetic field, the localization becomes remarkable and the shielding current density becomes larger until the flux flow occurs. In addition, the magnetic shielding performance of the HTS plate drastically changes with time under the low-frequency magnetic field below 100 Hz, whereas it is almost time-independent under the high-frequency magnetic field. Moreover, it turns out that the HTS plate can shield ac magnetic fields with a high frequency even if it remains in a mixed state.},
keywords={},
doi={},
ISSN={},
month={May},}
부
TY - JOUR
TI - Magnetic Shielding Analysis of Axisymmetric HTS Plates in Mixed State
T2 - IEICE TRANSACTIONS on Electronics
SP - 766
EP - 773
AU - Atsushi KAMITANI
AU - Shigetoshi OHSHIMA
PY - 1999
DO -
JO - IEICE TRANSACTIONS on Electronics
SN -
VL - E82-C
IS - 5
JA - IEICE TRANSACTIONS on Electronics
Y1 - May 1999
AB - The magnetic shielding performance of the high-Tc superconducting (HTS) plate in a mixed state has been investigated numerically. By taking account of the crystallographic anisotropy of the HTS plate, the axisymmetric shielding plate is assumed to have a multiple thin-layer structure. Under the assumptions, the governing equations of the shielding current density can be expressed in terms of a scalar function. The numerical code to integrate the equation has been developed and, by use of the code, the shielding current density and the damping coefficient are calculated for the axisymmetric HTS plate in a mixed state. The results of computations show that the shielding current density localizes around the edge under the high-frequency magnetic field. With an increasing frequency of the applied magnetic field, the localization becomes remarkable and the shielding current density becomes larger until the flux flow occurs. In addition, the magnetic shielding performance of the HTS plate drastically changes with time under the low-frequency magnetic field below 100 Hz, whereas it is almost time-independent under the high-frequency magnetic field. Moreover, it turns out that the HTS plate can shield ac magnetic fields with a high frequency even if it remains in a mixed state.
ER -