Procedure and apparatus for the measurement of the currents in a frequency converter
US5163172A · kind A · utility
8Cited by
9References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 6, 1989 |
| Grant date | Nov 10, 1992 |
| Priority date | — |
| Expiry date | Nov 6, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/0009
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A procedure and apparatus for the measurement of the currents in a frequency converter, provides that the phase currents of the frequency converter are measured by storing, in memory, signals corresponding to the current of the d.c. circuit of the converter and by producing a current value corresponding to the phase current from the previous and the momentary signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.