Axial flux machine shoe optimisation
US12062957B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 21, 2022 |
| Grant date | Aug 13, 2024 |
| Priority date | — |
| Expiry date | Mar 16, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K1/2798
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Various implementations include an axial flux machine including a rotor bearing a set of permanent magnets and a stator containing electro-magnetic coil assemblies disposed circumferentially at intervals about an axis. Each coil assembly has an axially extending stator tooth, one or more coils wound around the tooth, and one or more end shoes at an end of the stator tooth. The end shoes each have at least one circumferential edge adjacent a neighbouring coil assembly. In some implementations, radially innermost and outermost portions of the at least one circumferential edge are separated by a step projecting from the at least one circumferential edge. In some implementations, at least part of the at least one circumferential edge has a thickness less than a thickness of the inner radial edge thereby reducing a leakage flux between neighbouring electro-magnetic coil assemblies.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.