Coil structure for rotary electric machine
US9899888B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 5, 2014 |
| Grant date | Feb 20, 2018 |
| Priority date | — |
| Expiry date | Jun 15, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K3/12
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A coil structure for a rotary electric machine includes phase coils for magnetic flux generation. Each of the phase coils includes a plurality of first element conductors, a plurality of second element conductors, a plurality of first crossover portions, and a plurality of second crossover portions. The plurality of second element conductors are provided in a plurality of second slots among slots. The second slots are provided in a circumferential direction of a stator at a pitch of a first predetermined interval. The second slots are shifted in phase by a second predetermined interval with respect to first slots in the circumferential direction of the stator. The first predetermined interval is set to be an interval equivalent to N times a unit pitch. The second predetermined interval is set to be an interval smaller than the first predetermined interval.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.