Title :
Three-phase AC/DC converter with high power factor
Author :
Marino, P. ; Vasca, F.
Author_Institution :
Dipartimento di Inf. e Sistemistica, Univ. degli Studi di Napoli, Italy
Abstract :
A novel three-phase step-up AC/DC power converter with high power factor is proposed. The AC line currents are independently controlled by means of a transformer secondary with neutral wire and an output capacitor with mid-point connection. The transformer whose purpose is separation between the line and the power converter, makes it possible to eliminate in a simple way the high-frequency harmonics. An analysis of the rectifier operations, a mathematical model, the closed-loop control of the output voltage, and numerical simulations are presented
Keywords :
AC-DC power convertors; AC line currents; HF harmonics; closed-loop control; independent current control; mathematical model; mid-point connection; neutral wire; numerical simulations; output capacitor; output voltage; power factor; rectifier; separation; three-phase step-up AC/DC power converter; transformer secondary; Analog-digital conversion; Capacitors; DC-DC power converters; Mathematical model; Numerical simulation; Power system harmonics; Reactive power; Rectifiers; Voltage control; Wire;
Conference_Titel :
AFRICON '92 Proceedings., 3rd AFRICON Conference
Conference_Location :
Ezulwini Valley
Print_ISBN :
0-7803-0835-2
DOI :
10.1109/AFRCON.1992.624428
