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Title: Superconducting shielded core reactor with reduced AC losses

Abstract

A superconducting shielded core reactor (SSCR) operates as a passive device for limiting excessive AC current in a circuit operating at a high power level under a fault condition such as shorting. The SSCR includes a ferromagnetic core which may be either closed or open (with an air gap) and extends into and through a superconducting tube or superconducting rings arranged in a stacked array. First and second series connected copper coils each disposed about a portion of the iron core are connected to the circuit to be protected and are respectively wound inside and outside of the superconducting tube or rings. A large impedance is inserted into the circuit by the core when the shielding capability of the superconducting arrangement is exceeded by the applied magnetic field generated by the two coils under a fault condition to limit the AC current in the circuit. The proposed SSCR also affords reduced AC loss compared to conventional SSCRs under continuous normal operation.

Inventors:
;
Publication Date:
Research Org.:
The University Of Chicago, Chicago, IL (United States); Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1175693
Patent Number(s):
7,023,673
Application Number:
10/328,324
Assignee:
The University of Chicago (Chicago, IL)
DOE Contract Number:  
W-31-109-ENG-38
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
30 DIRECT ENERGY CONVERSION

Citation Formats

Cha, Yung S., and Hull, John R. Superconducting shielded core reactor with reduced AC losses. United States: N. p., 2006. Web.
Cha, Yung S., & Hull, John R. Superconducting shielded core reactor with reduced AC losses. United States.
Cha, Yung S., and Hull, John R. 2006. "Superconducting shielded core reactor with reduced AC losses". United States. https://www.osti.gov/servlets/purl/1175693.
@article{osti_1175693,
title = {Superconducting shielded core reactor with reduced AC losses},
author = {Cha, Yung S. and Hull, John R.},
abstractNote = {A superconducting shielded core reactor (SSCR) operates as a passive device for limiting excessive AC current in a circuit operating at a high power level under a fault condition such as shorting. The SSCR includes a ferromagnetic core which may be either closed or open (with an air gap) and extends into and through a superconducting tube or superconducting rings arranged in a stacked array. First and second series connected copper coils each disposed about a portion of the iron core are connected to the circuit to be protected and are respectively wound inside and outside of the superconducting tube or rings. A large impedance is inserted into the circuit by the core when the shielding capability of the superconducting arrangement is exceeded by the applied magnetic field generated by the two coils under a fault condition to limit the AC current in the circuit. The proposed SSCR also affords reduced AC loss compared to conventional SSCRs under continuous normal operation.},
doi = {},
url = {https://www.osti.gov/biblio/1175693}, journal = {},
number = ,
volume = ,
place = {United States},
year = {2006},
month = {4}
}