Synchronous rotary electric machine having a double excitation rotor
US9006950B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 11, 2011 |
| Grant date | Apr 14, 2015 |
| Priority date | — |
| Expiry date | May 5, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K2213/03
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A machine (1) having a rotor (11) including permanent magnets (PM) and field coils (EC). The magnets are housed in first axial recesses (E1) distributed in a circumferential portion of the magnetic body, thus defining circumferential polar sections. The coils are housed in second axial recesses (E2) distributed in an intermediate portion of the magnetic body and defining polar teeth (RT). The circumferential polar section includes a third recess (E3) having a maximum width at the top thereof, and the ratio of the maximum width of the third recess to a pole width of the circumferential polar section has a value of around 0.13 mm to around 0.44 mm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.