Angular dependence of E–J characteristics and dissipative properties in Bi-2223/Ag tape
Angular dependence of E–J characteristics and dissipative properties in Bi-2223/Ag tape
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Bi-2223/Ag 胶带中 E-J 特性和耗散特性的角度依赖性
DOI：
10.1088/0953-2048/15/2/309
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发表时间：
2002
影响因子：
3.6
通讯作者：
M. Yamaguchi
中科院分区：
文献类型：
--
作者：
Taketsune Nakamura;S. Tsuchiya;A. Fujio;T. Hoshino;I. Muta;M. Yamaguchi
研究了低压区Bi2223/Ag多芯带材的E-J特性和热扰动引起的耗散特性与角度的关系。为了模拟耗散特性，我们考虑了E-J特性随温度、外加磁场和磁场方向的解析表达式，这与实验数据符合得很好。结果表明，耗散特性的模拟结果与实验数据半定量地吻合。在模拟的基础上，讨论了电流分担率与其对温升的贡献之间的关系。这些结果对于持续电流模式的高温超导功率应用系统是至关重要的，在这种模式下，即使是低功耗也会对性能造成不利影响。
We study the angular dependence of E–J characteristics and dissipative properties due to thermal disturbance in the Bi-2223/Ag multifilamentary tape in the low-voltage region. In order to simulate the dissipative properties, we take into account the analytical expressions of the E–J characteristics as a function of temperature, external magnetic field and field direction, which agree well with the experimental data. It is shown that the simulation results of the dissipative properties agree with the experimental data semi-quantitatively. The relationship between the current sharing rate and its contribution to the temperature increase is also discussed, based on the simulation. These results are crucial for high-Tc superconducting power application systems with a persistent current mode where even low-power dissipation is detrimental to the performance.