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:
Jan. 22, 2019
Filed:
Aug. 15, 2014
Rolls-royce Plc, London, GB;
David William Klaus, Leeds, GB;
Adrian Wilson, Newcastle Upon Tyne, GB;
ROLLS-ROYCE PLC, London, GB;
Abstract
A device () for a current limiter is described, the device () comprising: at least one coil assembly () adapted to carry a current, the coil assembly () comprising: a first coil (), comprising a first superconducting element, adapted to carry a first portion of said current, and a second coil (), comprising a second superconducting element, adapted to carry a second portion of said current, wherein said first and second coils () are arranged such that, when said first and second superconducting elements are each in a superconducting state and said coil assembly () carries said current, a magnetic field generated by said first portion of said current in said first coil () is substantially cancelled by a magnetic field generated by said second portion of said current in said second coil (); and wherein said device is adapted such that, in use, the first superconducting element carries a higher proportion of said current than the second superconducting element. The device may be used in a superconducting fault current limiter to provide a low inductance during normal operation and a rapid and even quench under fault current conditions.