Permanent-magnet synchronous motor
US7466055B2 · kind B2 · utility
8Cited by
2References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 26, 2004 |
| Grant date | Dec 16, 2008 |
| Priority date | — |
| Expiry date | Nov 7, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49012
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In a combination of, for example, a rotor having eight magnetic poles and a stator having twelve slots and pulsating components of permeance, which generate a sinusoidal cogging torque having maxima of the same number as the number of poles of the rotor, pressurizing parts arranged in predetermined positions applying a force at an outer periphery of the stator directed inwardly to cancel the pulsating components of the cogging torque.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.