Stator having three-phase superconducting windings
US4745313A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 7, 1987 |
| Grant date | May 17, 1988 |
| Priority date | — |
| Expiry date | Jan 7, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E40/60
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electric machine stator (6) having superconducting three-phase windings, the stator comprising tubular elements (7, 8) and end plates (9, 10) forming a cryogenic enclosure containing a bath of liquid helium at very low temperature, with the windings being disposed in said bath, an additional tubular element (11) supporting said enclosure at one of its ends and fixed at its other end in sealed manner to an additional end plate (3), annular screens (13, 14) for reflecting radial thermal radiation, and current leads to the windings, the stator including the improvements whereby the tubular elements and the end plates forming the enclosure, the tubular element supporting the enclosure, and the annular screens for reflecting radial thermal radiation are based on a material which does not conduct electricity, and whereby the annular screens for reflecting radial thermal radiation are covered with layers (41, 43) of metal wires of high thermal conductivity, each of which layers has at least one point thereof put into heat conducting connection with a heat exchanger having a chamber (16) through which flows gaseous helium evacuated from the enclosure passing therethrough.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.