Multiphase motor having winding connections specific to respective operating speed ranges
US6812661B2 · kind B2 · utility
10Cited by
12References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 8, 2002 |
| Grant date | Nov 2, 2004 |
| Priority date | — |
| Expiry date | Jan 31, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P1/48
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A permanent magnet motor includes salient pole stator cores. The poles and/or linking portions therebetween are wound with a plurality of winding coil sets. Mutually exclusive speed ranges are established between startup and a maximum speed at which the motor can be expected to operate. A different number of the motor stator winding coils are designated to be energized for each speed range for maximum operating efficiency. The number of energized coils are changed dynamically as the speed crosses a threshold between adjacent speed ranges.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.