Permanent magnet synchronous motor
US7019427B2 · kind B2 · utility
13Cited by
12References
8Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Jan 14, 2005 |
| Grant date | Mar 28, 2006 |
| Priority date | — |
| Expiry date | Jan 14, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K21/46
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A synchronous motor includes a stator, a rotor and permanent magnets. The rotor includes a rotor iron core rotatable relative to the stator, and a plurality of conductor bars accommodated within corresponding slots in the rotor iron core. The conductor bars have their opposite ends shortcircuited by respective shortcircuit rings to form a starter cage conductor. The rotor also has a plurality of magnet retaining slots defined therein at a location on an inner side of the conductor bars, in which hole permanent magnets are embedded.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.