Experimental Evaluation of AC Losses of a DC Restive SFCL Prototype

Author

Imparato, S. ; Morandi, A. ; Martini, L. ; Bocchi, M. ; Grasso, G. ; Fabbri, M. ; Negrini, F. ; Ribani, P.L.

Author_Institution

Dept. of Electr. Eng., Univ. of Bologna, Bologna, Italy

Volume

20

Issue

3

fYear

2010

fDate

6/1/2010 12:00:00 AM

Firstpage

1199

Lastpage

1202

Abstract

A DC resistive SFCL consists of an inductance and a quenching superconducting resistance embedded in diode bridge. The superconductor operates in nearly DC current conditions. This regime of operation drastically reduces the AC losses and makes it possible to implement the device by means of present state of the art superconductors. In this paper the AC losses of a laboratory scale prototype of DC resistive SFCL (a 200 V/60 A) are experimentally investigated. The prototype consists of a non inductive Bi2223 winding series connected with a conventional iron core inductor and embedded in a diode rectifier which is connected to the protected circuit. The AC losses are measured and compared with those occurring in pure AC operation at the same current.

Keywords

fault current limiters; inductance; loss measurement; power inductors; superconducting devices; AC losses; AC operation; DC current conditions; DC restive SFCL prototype; conventional iron core inductor; diode bridge; diode rectifier; inductance; inductive Bi2223 winding series; quenching superconducting resistance; AC losses measurement; DC SFCL; fault current limiter; resistive SFCL;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2010.2043726

Filename

5433314