Brushless permanent magnet machine with reduced cogging and torque ripple and method of producing the same
US7098567B2 · kind B2 · utility
11Cited by
38References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 27, 2005 |
| Grant date | Aug 29, 2006 |
| Priority date | — |
| Expiry date | Jun 27, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K2201/06
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electrical machine comprises a stator and a rotor. The stator includes a plurality of stator teeth and a winding with compact coils disposed on the teeth. The winding has (m) phases and (p) poles; where (m) is an integer and is greater than or equal to two; where (p) is an integer, is greater than or equal to two, and is an even number. The rotor has a magnetization pattern can include a magnetization skew. In some constructions, each stator includes one or more channels along a surface adjacent to the rotor. The channels can be of various shapes including a trapezoidal shape or a curvilinear shape.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.