Rotating electrical machine and method for manufacturing same
US10784737B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 19, 2016 |
| Grant date | Sep 22, 2020 |
| Priority date | — |
| Expiry date | Sep 26, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K3/12
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A rotating electrical machine with a fractional slot structure includes concentrically wound stator coils, and a method of manufacturing the same. In a rotating electrical machine, a plurality of unit coils included in the stator coil are allocated into a first pole coil and a second pole coil in units of slots that oppose a pair of movable element magnetic poles. Further, each pole pair coil forming a plurality of phase coils is provided with two types of the unit coils, namely a full-coil and a half-coil. In addition, in each pole pair coil, the coil pitches between pairs of coil sides of the plurality of unit coils forming said pole pair coil are different from one another, and each pole pair coil is provided with one half-coil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.