Counter-rotatable generator
US8063528B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 18, 2009 |
| Grant date | Nov 22, 2011 |
| Priority date | — |
| Expiry date | Aug 13, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K16/02
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A counter-rotatable generator includes a generator stator concentric with concentric counter-rotatable radially inner pole and outer magnet rotors. The magnet rotor encircles the pole rotor and the pole rotor encircles the generator stator. A rotor air gap is disposed between the magnet and pole rotors, and a transformer air gap is disposed between the pole rotor and the stator. The magnet rotor includes a circular array of magnets having circumferentially alternating north/south and south/north orientations, retained within a magnet retention ring, and the magnets are circumferentially separated from each other by non-magnetic material spacers. One stator includes an annular hub, axial windings around equi-distantly spaced axial poles on the annular hub, radial cores extending radially outwardly from and equi-angularly spaced about a pole hub on the annular hub between the first and second axial windings, and radial windings around the radial cores.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.