Synchronous electric machine
US7109624B2 · kind B2 · utility
5Cited by
4References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 11, 2005 |
| Grant date | Sep 19, 2006 |
| Priority date | — |
| Expiry date | Mar 11, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K2213/03
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A synchronous electric machine includes a stator and a rotor. The stator is provided with teeth, which are wound around to establish electromagnetic fields. The rotor is provided with permanent magnets to generate magnetic fields, so that the rotor can rotate by interaction of the magnetic fields of the windings and the permanent magnets of the magnets. At least one pair of the permanent magnets is dislocated by a predetermined angle from positions where the permanent magnets is arranged at even pitch, and the predetermined angle being set to reduce electromagnetic excitation force acting on said teeth.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.