Fault-tolerant axial-gap permanent-magnet electric machine
US12316179B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 11, 2023 |
| Grant date | May 27, 2025 |
| Priority date | — |
| Expiry date | Nov 30, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K3/47
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An axial flux electrical machine has a permanent magnet rotor fixedly mounted on a rotating shaft and at least one stator having a plurality of polyphase windings disposed along a common axis with the shaft. An insulation layer is fixed between the polyphase windings. In a first example, the mechanical angle and electrical angle of each of the two polyphase windings is aligned. In a second example, the mechanical and electrical angle of each of the two polyphase windings is offset. A controller and at least one sensor are incorporated with the axial flux electrical machine for fault detection in each of the polyphase windings. Upon detection of a fault in one of the polyphase windings, the controller is configured to disable that polyphase winding allowing the electrical machine to operate with the remaining polyphase winding.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.