Rotary electric machine comprising a stator and two rotors
US7250702B2 · kind B2 · utility
30Cited by
9References
31Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 5, 2004 |
| Grant date | Jul 31, 2007 |
| Priority date | — |
| Expiry date | Mar 5, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/64
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention relates to an electric machine comprising a stator (10, 40) provided with a plurality of teeth (11, 41), each tooth supporting at lest one individual coil (13, 46, 47), an external rotor (30) which is radially arranged outside the stator and provided with constant magnets, an internal rotor (20) radially arranged inside the stator, provided with constant magnets and connected to the external rotor (30). At least one of the external (30) and internal (20) rotors is disposed in a flux concentration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.