Quasi square-wave back-EMF permanent magnet AC machines with five or more phases
US5394321A · kind A · utility
61Cited by
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27Claims
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Assignee
Inventors
Key dates
| Filing date | Sep 2, 1992 |
| Grant date | Feb 28, 1995 |
| Priority date | — |
| Expiry date | Sep 2, 2012 |
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.