Permanent magnet motor
US7808143B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 24, 2007 |
| Grant date | Oct 5, 2010 |
| Priority date | — |
| Expiry date | Oct 24, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K29/03
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A permanent magnet motor includes stator, rotor, and shaft; multiple rotor magnetic poles are disposed on the rotor; each rotor magnetic pole contains an arc surface and a first inclined section and a second inclined section extending respectively from both sides of the arc surface; a trap is formed between two second inclined section of two abutted rotor magnetic poles connected by a tangent section; multiple magnets are respectively disposed in each rotor magnetic pole; both ends of each magnet being disposed at where close to two second inclined sections; and a central portion of each magnet is indented inwardly towards a center of the rotor to effectively upgrade performance efficiency of the motor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.