Method and device for operating an asynchronous machine
US5942875A · kind A · utility
2Cited by
7References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 11, 1998 |
| Grant date | Aug 24, 1999 |
| Priority date | — |
| Expiry date | Feb 11, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P27/05
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method and a device for operating an asynchronous machine include controlling the rotor and the stator of the machine during start-up with respective first and second direct converter units. After the start-up the second direct converter unit is isolated from the stator and is connected to the rotor in parallel with the first direct converter unit. Therefore, direct converter units which are already available for performing a mains operation are used during start-up.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.