Method for controlling a voltage/frequency converter controlled single-phase or polyphase electric motor
US6208112A · kind A · utility
77Cited by
2References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 24, 1999 |
| Grant date | Mar 27, 2001 |
| Priority date | — |
| Expiry date | Dec 24, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P6/085
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The method for controlling a voltage/frequency converter controlled single-phase or polyphase electric motor evaluates the phase shifting between the EMF and BEMF by way of the deviation between the zero crossing of the phase current and the voltage produced by the intrinsic induction and readjusts the frequency of the converter accordingly. The measurement of the intrinsic induction is effected in the zero crossing of the current courses of the associated phase, wherein during the measurement the phase is separated from the supply network.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.