Electric machine comprising a rotor with angled interior permanent magnets
US10530206B2 · kind B2 · utility
0Cited by
2References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 27, 2017 |
| Grant date | Jan 7, 2020 |
| Priority date | — |
| Expiry date | Nov 27, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F7/0205
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention concerns a brushless electric machine with a rotor having interior permanent magnets, characterised in that the rotor consists of a tubular core (1), said core (1) having N pairs of longitudinal slots (2, 3) having trapezoidal cross-section, a width La and a length L, where La/L is between 0.25 and 0.35, the two slots (2, 3) of a pair extending on either side of the median radial plane, at an angle of 7.5°±1.5°, the core having, in the region of convergence of each pair of slots, a longitudinal channel (10) opening on either side of the front ends of the core (1).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.