Wound field synchronous machine
US11303194B1 · kind B1 · utility
2Cited by
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19Claims
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Assignee
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Key dates
| Filing date | Jul 2, 2019 |
| Grant date | Apr 12, 2022 |
| Priority date | — |
| Expiry date | Dec 6, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E40/60
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A cryogen-free partially-superconducting electric machine of the wound field synchronous type includes a room temperature semi-slotless stator, a superconducting motor rotor, a gap between the rotor and stator, a torque tube which isolates the cryogenic superconducting motor rotor from a central shaft, bearings, an acoustic cryocooler integrated within the motor rotor and torque tube, a heat exchange, a rotary transformer, a vacuum pump, a vacuum enclosure integrated with the stator, and an eddy current/thermal shield. The electric machine can act as a motor or a generator and produces a high specific power and efficiency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.