Method of torque notch minimization for quasi square wave back EMF permanent magnet synchronous machines with voltage source drive
US5387854A · kind A · utility
45Cited by
7References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 28, 1993 |
| Grant date | Feb 7, 1995 |
| Priority date | — |
| Expiry date | May 28, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P2209/07
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method for smoothing the torque characteristics of a multi-phase PM synchronous machine by controlled driving with a conventional voltage source inverter operated in accordance with a predetermined switching sequence wherein the sum of the excitation voltages applied to the incoming phase winding and outgoing phase winding are maintained constant at a predetermined value for the duration of each commutation period. In addition, the individual excitation voltages applied to the remaining phase active windings are also held constant during the commutation period.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.