Device for a current limiter and a current limiter comprising said device
US10186858B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 15, 2014 |
| Grant date | Jan 22, 2019 |
| Priority date | — |
| Expiry date | Aug 26, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F2006/001
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A device (10) for a current limiter is described, the device (10) comprising: at least one coil assembly (12) adapted to carry a current, the coil assembly (12) comprising: a first coil (14), comprising a first superconducting element, adapted to carry a first portion of said current, and a second coil (16), comprising a second superconducting element, adapted to carry a second portion of said current, wherein said first and second coils (14, 16) are arranged such that, when said first and second superconducting elements are each in a superconducting state and said coil assembly (12) carries said current, a magnetic field generated by said first portion of said current in said first coil (14) is substantially cancelled by a magnetic field generated by said second portion of said current in said second coil (16); 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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.