Waveform of loss voltage in Ag-sheathed Bi2223 superconducting tape carrying AC transport current

Doan N. Nguyen, Pamidi V.P.S.S. Sastry, Justin Schwartz

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In AC loss measurements of superconductors using the four-terminal method, the voltage measured consists of two components. The loss voltage component is in phase with transport current while the inductive voltage is out of phase with transport current. Here we report on the use of a compensation coil to nearly cancel the inductive voltage. The loss voltage was amplified by a transformer amplifier and observed on a digital oscilloscope. The waveform of the measured voltage was compared with that of a calculated signal. The loss voltage was analytically calculated for a round wire using the critical state model. The effects of frequency on the waveform of the loss voltage are also studied. Finally, a comparison between waveforms of loss voltages obtained with sine-wave and triangle-wave transport currents are presented.

Original languageEnglish (US)
Title of host publicationADVANCES IN CRYOGENIC ENGINEERING
Subtitle of host publicationTransactions of the International Cryogenic Materials Conference, ICMC, Volume 52B
Pages869-876
Number of pages8
DOIs
Publication statusPublished - Mar 31 2006
EventADVANCES IN CRYOGENIC ENGINEERING: Transactions of the International Cryogenic Materials Conference, ICMC - Keystone, CO, United States
Duration: Aug 29 2005Sep 2 2005

Publication series

NameAIP Conference Proceedings
Volume824 II
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

OtherADVANCES IN CRYOGENIC ENGINEERING: Transactions of the International Cryogenic Materials Conference, ICMC
CountryUnited States
CityKeystone, CO
Period8/29/059/2/05

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All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Nguyen, D. N., Sastry, P. V. P. S. S., & Schwartz, J. (2006). Waveform of loss voltage in Ag-sheathed Bi2223 superconducting tape carrying AC transport current. In ADVANCES IN CRYOGENIC ENGINEERING: Transactions of the International Cryogenic Materials Conference, ICMC, Volume 52B (pp. 869-876). (AIP Conference Proceedings; Vol. 824 II). https://doi.org/10.1063/1.2192435