Low noise stator winding having a phase angle shift
US7365467B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 6, 2005 |
| Grant date | Apr 29, 2008 |
| Priority date | — |
| Expiry date | Apr 21, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K3/28
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A stator for an electric machine includes a generally cylindrically-shaped stator core having a plurality of core teeth that define a plurality of core slots, the core slots extend between first and second ends of the stator core. A stator winding has a plurality of phases, N, each phase including at least one conductor having a plurality of slot segments housed in the core slots, the slot segments are alternately connected at the first and second ends by a plurality of end loop segments. At least one conductor has a slot segment that is switched with an adjacent conductor such that the conductor has an end loop segment having a pitch equal to N+1 and the end loop segment of the adjacent conductor has a pitch equal to N−1, wherein the end loop segments of the conductor and the adjacent conductor do not cross one another. The stator also reduces overall noise of an electric machine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.