The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 16, 2004
Filed:
Jul. 15, 2003
Makan Chen, Rupperswil, CH;
Willi Paul, Zürich, CH;
Michel Decroux, Chambésy, CH;
Louis Antognazza, Onex, CH;
Oystein Fischer, Coppet, CH;
ABB Research Ltd., Zurich, CH;
Abstract
The invention is concerned with a resistive fault current limiter (FCL) based on thin superconducting films. The FCL comprises constrictions ( ) with a reduced critical current, separated by connecting paths ( ). Upon occurrence of a fault current, the former turn resistive simultaneously and build up a resistance which allows the applied voltage to drop entirely only over the constrictions. Only at a later stage, the connecting paths become resistive and dissipate energy. The thickness and width of an electrical bypass determine said normal resistivities of the constrictions and the connecting paths.