VSCF system with reduced DC link ripple
US5218520A · kind A · utility
24Cited by
16References
36Claims
0Family size
Inventors
Key dates
| Filing date | Nov 27, 1991 |
| Grant date | Jun 8, 1993 |
| Priority date | — |
| Expiry date | Nov 27, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M5/458
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A circuit in a power system for suppressing an AC ripple superimposed on a bus signal on a bus includes a first circuit for producing first and second signals having a frequency substantially equal to the AC ripple frequency wherein the second signal is a phase quadrature of the first signal, a second circuit for combining these signals with a signal representing the bus signal having the AC ripple superimposed thereon so as to derive a control signal having substantially the same frequency and phase as the AC ripple, and a third circuit responsive to this control signal so as to substantially suppress the AC ripple on the bus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.