Numerical and Experimental Analysis of and AC Loss for Bent 2G HTS Wires Used in an Electric Machine

Application of the second generation High Temperature Superconducting (HTS) YBCO tapes has been increasingly popular since the low-cost superconducting materials were discovered. This paper mainly presents the properties of two types of 2G YBCO tapes from American Superconductor Corporation (AMSC) a...

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Bibliographic Details
Published in:IEEE transactions on applied superconductivity 2009-06, Vol.19 (3), p.3356-3360
Main Authors: Ruilin Pei, Velichko, A., Zhiyong Hong, Yudong Jiang, Weijia Yuan, Campbell, A.M., Coombs, T.A.
Format: Article
Language:English
Subjects:
2G YBCO tape
AC transport loss
Amplifiers
bending
critical current
High temperature superconductors
Image analysis
lock-in
Loss measurement
Nitrogen
Superconducting films
Superconducting integrated circuits
Superconducting materials
synchronous motor
Synchronous motors
Yttrium barium copper oxide
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Summary:Application of the second generation High Temperature Superconducting (HTS) YBCO tapes has been increasingly popular since the low-cost superconducting materials were discovered. This paper mainly presents the properties of two types of 2G YBCO tapes from American Superconductor Corporation (AMSC) and SuperPower, Inc, respectively. All superconducting materials are cooled by liquid nitrogen (77 K). At first, we will introduce the basic design strategy for synchronous motor and characteristics of superconducting materials. Then, the basic principle and algorithm for calculation and measurement of Ic and AC transport loss will be explained. Secondly, the novel measurement system using a high-precision digital lock-in amplifier is presented. Finally, we present and analyze simulation and experimental results for two types of YBCO tapes in bending condition.
ISSN:1051-8223
1558-2515
DOI:10.1109/TASC.2009.2018247