- Tytuł:
- A hybrid parallel active filter / off-line UPS unit for computer loads
- Autorzy:
-
Ghennam, T.
Darwish, M. - Powiązania:
- https://bibliotekanauki.pl/articles/262760.pdf
- Data publikacji:
- 2008
- Wydawca:
- Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie
- Tematy:
-
active filters
UPS systems
computer power supplies
current harmonics - Opis:
- A hybrid parallel active filter / off-line uninterruptible power supply (UPS) system is proposed. The hybrid system contains a single inverter which acts as a parallel active filter during the normal mode of operation (when the AC supply is available); and also supplies the load with energy from the UPS back-up battery during the back-up mode of operation (when the AC supply is not available or is beyond the preset tolerance). In both modes of operations the inverter is controlled in such way so that the line current is a pure sinusoid. This is to improve the input power factor and to eliminate the current harmonics in the first mode and to remove any stress on the back-up battery caused by the discharging during the second mode of operation. A full simulation results and an experimental setup is presented together with a closed loop control algorithm.
- Źródło:
-
Electrical Power Quality and Utilisation. Journal; 2008, 14, 2; 41-48
1896-4672 - Pojawia się w:
- Electrical Power Quality and Utilisation. Journal
- Dostawca treści:
- Biblioteka Nauki
Artykuł