Title :
Origins of errors in AC transport current loss measurements of HTS tapes and methods to suppress errors
Author :
Tsukamoto, O. ; Ogawa, J. ; Ciszek, M. ; Miyagi, D. ; Okazaki, I. ; Niidome, Y. ; Fukui, S.
Author_Institution :
Fac. of Eng., Yokohama Nat. Univ., Japan
fDate :
3/1/2001 12:00:00 AM
Abstract :
This paper addresses an electrical measurement method of AC transport current losses in HTS tapes. In the method, there are various origins of errors e.g. improper arrangement of leads from the voltage taps on an HTS tape, phase errors of a current measuring device and inductive voltage cancellation device, external magnetic field, magnetization of neighboring tapes and common mode noise in the voltage signal from the sample. Influence of those errors are studied, and methods to suppress the errors are discussed. In the paper, some techniques which can minimize the errors are recommended
Keywords :
high-temperature superconductors; loss measurement; magnetic fields; measurement errors; superconducting tapes; AC transport current loss measurements; HTS tapes; common mode noise; current measuring device; electrical measurement method; errors suppression; external magnetic field; inductive voltage cancellation device; neighboring tapes magnetisation; voltage signal; Current measurement; Electric variables measurement; High temperature superconductors; Loss measurement; Magnetic field measurement; Magnetic noise; Magnetization; Noise measurement; Phase measurement; Voltage;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
