Slotted rotor-bridge for electrical machines
US10432043B2 · kind B2 · utility
0Cited by
3References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 16, 2016 |
| Grant date | Oct 1, 2019 |
| Priority date | — |
| Expiry date | Nov 10, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K2213/03
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electric machine having a rotor is disclosed. The rotor defines a cavity containing a magnet, an outer periphery, and a top bridge therebetween that includes at least two slots each having a length in a radial direction. A maximum of the lengths is closest to a Q-axis and a minimum of the lengths is closest to a D-axis. As the electric machine is operating, a rate of change in airgap flux density through the top bridge differs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.