Stator coil arrangement for an axial airgap electric device including low-loss materials
US7468569B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 12, 2007 |
| Grant date | Dec 23, 2008 |
| Priority date | — |
| Expiry date | Mar 12, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K1/02
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A dynamoelectric, rotating electric machine includes a stator assembly that includes stacked stator coil windings. The machine is preferably a polyphase, axial airgap device. Improved slot filling results from the stacked stator coil configuration. Device performance capability is thereby increased. The stator assembly of the electric device has a magnetic core made from low loss, high frequency material. A high pole count permits the electrical device to operate at high commutating frequencies, with high efficiency, high power density and improved performance characteristics. Low-loss materials incorporated by the device include amorphous metals, nanocrystalline metals, optimized Si—Fe alloys, grain-oriented Fe-based materials or non-grain-oriented Fe-based materials.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.