Quasi square-wave back-EMF permanent magnet AC machines with five or more phases
US5642009A · kind A · utility
78Cited by
29References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 27, 1994 |
| Grant date | Jun 24, 1997 |
| Priority date | — |
| Expiry date | Jul 27, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P2209/07
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A new class of higher phase-order (five or more) quasi square-wave back emf permanent magnet machines including radial, axial and linear embodiments which employ a greater number of active phase windings during continuous operation, thereby utilizing more of the machine copper and magnet material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.