Title :
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
fDate :
6/1/2010 12:00:00 AM
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;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2010.2043726
