Rotor and design method thereof
US12266975B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 26, 2022 |
| Grant date | Apr 1, 2025 |
| Priority date | — |
| Expiry date | Jul 8, 2043 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/64
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A motor rotor includes a rotor core and a plurality of reluctance parts. The rotor core includes a plurality of metal parts and an inner hole for the motor rotor, the inner hole of the motor rotor passes through the rotor core, and the areas of the metal parts form a rotor metal total area ΣAmetal. The plurality of reluctance parts are disposed surrounding the inner hole of the motor rotor, each of the reluctance parts comprising a plurality of flux barriers penetrating through the rotor core. The areas of the flux barriers in all the reluctance parts form a flux barrier total area ΣAair. The sum of ΣAair and ΣAmetal is a rotor effective total area, and the ratio of ΣAair to the rotor effective total area is a flux barrier ratio KA, which is expressed as and satisfies 0.25≤KA≤0.5.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.