Multiphase motor winding topology and control
US6791226B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 10, 2003 |
| Grant date | Sep 14, 2004 |
| Priority date | — |
| Expiry date | Sep 10, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K3/28
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A multiphase brushless permanent magnet motor has a stator provided with at least one winding for each phase, the windings permanently connected to each other at a plurality of junctions. A power source is coupled, via controlled motor energization circuitry, to a plurality of terminals connected to respective junctions, the number of which terminals is fewer than the number of motor phases. The motor energization circuitry is appropriately controlled by a central processor. A reduced number of controllable states is achieved while retaining a high degree of precision controllability. Thus, duplication of identical energization circuitry for each phase is avoided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.