Method and apparatus for stabilized integral control of static power frequency changers
US4307444A · kind A · utility
5Cited by
2References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 19, 1979 |
| Grant date | Dec 22, 1981 |
| Priority date | — |
| Expiry date | Nov 19, 1999 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M5/271
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Firing signals for the power switches in static power frequency changers are generated by comparing the integral of the output waveform ripple voltage to a repetitively generated stabilizing signal phase locked to, but having a time dependent magnitude independent of, the component waveforms of the output voltage. The stabilizing signal which changes in magnitude in one direction with time is reset to an initial level each time a firing signal is generated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.