Permanent magnet arrangement for generator rotor
US8339006B2 · kind B2 · utility
1Cited by
13References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 2, 2010 |
| Grant date | Dec 25, 2012 |
| Priority date | — |
| Expiry date | Feb 18, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49012
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electric generator rotor having one or more permanent magnets coupled thereon. The permanent magnets provide a constant magnetic field in the rotor at all times, therein minimizing the effect of rotor residual magnetism on the start-up characteristics of the electric generator. The type and placement of the one or more permanent magnets on the rotor and/or magnetic field confinement techniques may be utilized to control spatial distribution of magnetic field within the rotor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.