Commutation controller
US6008615A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 11, 1998 |
| Grant date | Dec 28, 1999 |
| Priority date | — |
| Expiry date | Dec 11, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P25/0925
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A commutation controller for a switched reluctance machine has separate timer circuits for determining the firing signals for motoring and generating modes. Each timer circuit comprises a ramp generator and a pair of comparators which denote the ON- and OFF-angle as the ramp output passes preset thresholds applied to the comparators. A multiplexer selects the output from one of the motoring and generating timers according to the mode of machine operation. By producing timing signals for the motoring and generating modes separately and continuously, a transition between motoring and generating modes can be carried out smoothly without timing error.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.