Method of making a powder metal rotor for a synchronous reluctance machine
US6675460B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 3, 2001 |
| Grant date | Jan 13, 2004 |
| Priority date | — |
| Expiry date | Dec 16, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49076
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method of making a composite powder metal disk for a rotor assembly in a synchronous reluctance machine. The method includes filling discrete regions of a disk-shaped die with ferromagnetic and non-ferromagnetic powder metals, compacting to powders, and sintering the compacted powders. By this method, a disk is formed that includes alternating regions of magnetically conducting powder metal and magnetically non-conducting powder metal compacted and sintered to a high density. The method may also include forming a rotor assembly by stacking a plurality of the composite powder metal disks axially along a shaft with their magnetic configurations aligned.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.