In this paper, we report on the quantitative characteristics of the DC current transport property of a superconducting bismuth strontium calcium copper oxide (BSCCO) stator winding that is used in a superconducting motor. The winding is in a slot of silicon steel core, and the DC voltage of such a winding is measured as a function of the transport current in atmospheric liquid nitrogen. Precise distribution of the magnetic field vector on the winding is also obtained using a three-dimensional finite element method, and thereafter used for the quantitative calculation of the local electric field with the aid of nonlinear and distributed circuits. The total (end-to-end) voltage of the winding is obtained by summing up the local value. It is demonstrated that the developed analysis procedure reproduces the measured results of the DC voltage vs. current characteristics even though the tape experiences a complicated magnetic field vector. Our method is effective for the precise design of a high-temperature superconducting stator.

在本文中，我们报告了用于超导电机的超导铋锶钙铜氧化物 (BSCCO) 定子绕组的直流电流传输特性的定量特性。绕组位于硅钢芯的槽中，测量这种绕组的直流电压作为大气液氮中传输电流的函数。磁场矢量在绕组上的精确分布也是利用三维有限元方法得到的，然后借助非线性和分布式电路用于局部电场的定量计算。绕组的总（端到端）电压是通过将局部值相加而获得的。结果表明，开发的分析程序再现了直流电压与直流电压的测量结果。即使磁带经历了复杂的磁场矢量。我们的方法对于高温超导定子的精确设计是有效的。