Cooled magnet motor
US9735654B2 · kind B2 · utility
4Cited by
1References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 9, 2012 |
| Grant date | Aug 15, 2017 |
| Priority date | — |
| Expiry date | May 16, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K5/207
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electric motor/generator includes a rotor with magnets mounted on the surface of the rotor, the magnets facing the stator over a gap. The magnets have a very high flux density but a limited ability to withstand high stator currents at high temperatures, preferably magnets made of the N48H material. By providing rotor magnet cooling means that reduces the temperature of the magnets by a cooling fluid, use of magnets with lower maximum working temperature and higher flux density is permitted and thereby higher flux can be obtained from the magnets.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.