Off-line flyback converter with input harmonic current correction

Author

Tsai, Fu-Sheng ; Markowski, Peter ; Whitcomb, Eugene

Author_Institution

Power Conversion North America Computer Products Inc., South Boston, MA, USA

fYear

1996

fDate

6-10 Oct 1996

Firstpage

120

Lastpage

124

Abstract

An offline flyback power converter employing coupled primary transformer windings to achieve input harmonic current correction is introduced. By controlling the turn-ratio of the windings, the input current harmonic contents can be reduced to comply with EN611000-3-2 limits while boosting only slightly the bulk capacitor voltage. Such a topology allows the use of commercially available electrolytic capacitors for energy storage and introduces minimum cost penalty. The basic operation of the power converter is discussed and hardware results from a prototype circuit presented

Keywords

AC-DC power convertors; capacitor storage; harmonic distortion; power capacitors; power system harmonics; power transformers; rectifying circuits; transformer windings; 85 to 264 V; AC/DC conversion; EN611000-3-2 limits; bulk capacitor voltage; coupled primary transformer windings; electrolytic capacitors; energy storage; input harmonic current correction; offline flyback power converter; windings turn-ratio; Boosting; Capacitors; Circuit topology; Costs; Energy storage; Hardware; Power system harmonics; Prototypes; Voltage control; Windings;

fLanguage

English

Publisher

ieee

Conference_Titel

Telecommunications Energy Conference, 1996. INTELEC '96., 18th International

Conference_Location

Boston, MA

Print_ISBN

0-7803-3507-4

Type

conf

DOI

10.1109/INTLEC.1996.572389

Filename

572389