Electric-machine-rotor having field coil and auxiliary permanent magnets amd method of manufacturing the same
US6853111B2 · kind B2 · utility
11Cited by
21References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 7, 2001 |
| Grant date | Feb 8, 2005 |
| Priority date | — |
| Expiry date | Apr 18, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49012
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electric-machine rotor is composed of a field coil, a pair of pole cores having a plurality of claw poles to enclose the field coil, a plurality of auxiliary permanent magnets disposed between the claw poles, a shaft fixed to the pair of pole cores, and a pair of slip rings connected to the field coil. The rotor is provided with a pattern on a surface of the pole cores for indicating the polarity of the claw poles when the field coil is energized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.