Method for magnetizing a superconductor bulk magnet, with generating an auxiliary magnetic field in the superconductor bore
US11551843B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 20, 2019 |
| Grant date | Jan 10, 2023 |
| Priority date | — |
| Expiry date | Apr 14, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/3815
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A superconductor bulk magnet magnetizing method providing a more homogenous trapped magnetic field includes: placing the bulk magnet inside a charger bore of an electrical charger magnet; placing a field correction unit inside a superconductor bore of the bulk magnet; applying an electrical current (I0) to the charger magnet, to generate an externally applied magnetic field, wherein a temperature Tbulk of the bulk magnet exceeds a bulk magnet critical temperature Tc; applying an auxiliary electrical current (I1, . . . ) to the field correction unit, thus generating an auxiliary magnetic field applied to the bulk magnet from within the superconductor bore, wherein Tbulk>Tc; lowering Tbulk below Tc; turning off the electrical current at the charger magnet, wherein Tbulk<Tc, and turning off the auxiliary electrical current at the field correction unit, wherein Tbulk<Tc; and removing the bulk magnet from the charger bore while Tbulk<Tc.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.