Superconducting fault current-limiter with variable shunt impedance
Abstract
A superconducting fault current-limiter is provided, including a superconducting element configured to resistively or inductively limit a fault current, and one or more variable-impedance shunts electrically coupled in parallel with the superconducting element. The variable-impedance shunt(s) is configured to present a first impedance during a superconducting state of the superconducting element and a second impedance during a normal resistive state of the superconducting element. The superconducting element transitions from the superconducting state to the normal resistive state responsive to the fault current, and responsive thereto, the variable-impedance shunt(s) transitions from the first to the second impedance. The second impedance of the variable-impedance shunt(s) is a lower impedance than the first impedance, which facilitates current flow through the variable-impedance shunt(s) during a recovery transition of the superconducting element from the normal resistive state to the superconducting state, and thus, facilitates recovery of the superconducting element under load.
- Inventors:
- Issue Date:
- Research Org.:
- Superpower, Inc, Schenectady, NY, USA
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1108610
- Patent Number(s):
- 8588875
- Application Number:
- 12/691,325
- Assignee:
- Superpower, Inc. (Schenectady, NY)
- Patent Classifications (CPCs):
-
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01F - MAGNETS
H - ELECTRICITY H02 - GENERATION H02H - EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- DOE Contract Number:
- F36-03G013033
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
Citation Formats
Llambes, Juan Carlos H, and Xiong, Xuming. Superconducting fault current-limiter with variable shunt impedance. United States: N. p., 2013.
Web.
Llambes, Juan Carlos H, & Xiong, Xuming. Superconducting fault current-limiter with variable shunt impedance. United States.
Llambes, Juan Carlos H, and Xiong, Xuming. Tue .
"Superconducting fault current-limiter with variable shunt impedance". United States. https://www.osti.gov/servlets/purl/1108610.
@article{osti_1108610,
title = {Superconducting fault current-limiter with variable shunt impedance},
author = {Llambes, Juan Carlos H and Xiong, Xuming},
abstractNote = {A superconducting fault current-limiter is provided, including a superconducting element configured to resistively or inductively limit a fault current, and one or more variable-impedance shunts electrically coupled in parallel with the superconducting element. The variable-impedance shunt(s) is configured to present a first impedance during a superconducting state of the superconducting element and a second impedance during a normal resistive state of the superconducting element. The superconducting element transitions from the superconducting state to the normal resistive state responsive to the fault current, and responsive thereto, the variable-impedance shunt(s) transitions from the first to the second impedance. The second impedance of the variable-impedance shunt(s) is a lower impedance than the first impedance, which facilitates current flow through the variable-impedance shunt(s) during a recovery transition of the superconducting element from the normal resistive state to the superconducting state, and thus, facilitates recovery of the superconducting element under load.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2013},
month = {11}
}
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