Numerical and Experimental Analysis of ${\\rm I}_{\\rm c}$ and AC Loss for Bent 2G HTS Wires Used in an Electric Machine

Author

Pei, Ruilin ; Velichko, Anton ; Hong, Zhiyong ; Jiang, Yudong ; Yuan, Weijia ; Campbell, A.M. ; Coombs, Tim A.

Author_Institution

Eng. Dept., Univ. of Cambridge, Cambridge, UK

Volume

19

Issue

3

fYear

2009

fDate

6/1/2009 12:00:00 AM

Firstpage

3356

Lastpage

3360

Abstract

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.

Keywords

barium compounds; eddy current losses; high-temperature superconductors; machine theory; magnetic cooling; magnetic leakage; power amplifiers; superconducting tapes; synchronous motors; yttrium compounds; AC transport loss; American Superconductor Corporation; YBa₂Cu₃O_7-delta; bent 2G HTS wires; electric machine; high temperature superconducting tapes; high-precision digital lock-in amplifier; liquid nitrogen; measurement system; superconducting material cooling; synchronous motor design strategy; 2G YBCO tape; AC transport loss; bending; critical current; lock-in; synchronous motor;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2009.2018247

Filename

5153168

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

Pei, Ruilin ; Velichko, Anton ; Hong, Zhiyong ; Jiang, Yudong ; Yuan, Weijia ; Campbell, A.M. ; Coombs, Tim A.

jour

Numerical and Experimental Analysis of ${\\rm I}_{\\rm c}$ and AC Loss for Bent 2G HTS Wires Used in an Electric Machine