Switched reluctance motor
US5747912A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 29, 1995 |
| Grant date | May 5, 1998 |
| Priority date | — |
| Expiry date | Nov 29, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K29/03
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A switched reluctance motor has a rotor disposed in an annular stator and formed mainly of a stack of iron plates. The rotor has pole protrusions that face the stator. The pole protrusions have weak magnetic portions provided therein. Each weak magnetic portion has a shape elongated from a leading outer point to a tailing inner point, or a shape that has a base side extending a leading outer point to a tailing inner point and that extends from the base side in the rotational direction and in the inward radial direction. The weak magnetic portions are formed of a material that has a weaker magnetism than the materials forming the other portions of the rotor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.