Application of the nondissipative snubber in the AC/DC full-bridge converter and high power factor operation

Author

Fontoura, K.L. ; Pinto, J. A Corrêa ; Farias, V.J. ; de Freitas, L.C. ; Vieira, João B., Jr.

Author_Institution

Centro de Ciencias Exatas e Technol., Univ. Federal de Uberlandia, Brazil

fYear

2000

fDate

2000

Firstpage

665

Lastpage

670

Abstract

This work presents an AC/DC full-bridge converter using a nondissipative snubber working in order to achieve an improved input power factor. The main switches operate in a ZVS mode, and the auxiliary switches in a ZCS mode. A nondissipative snubber associated with the full-bridge converter providing the soft commutation is used as the DC/DC converter. A complete analysis, relevant equations and experimental results are presented

Keywords

AC-DC power convertors; DC-DC power convertors; bridge circuits; commutation; power factor correction; snubbers; switching circuits; AC/DC full-bridge converter; DC/DC converter; ZCS mode; ZVS mode; auxiliary switches; high power factor operation; input power factor; nondissipative snubber; soft commutation; Analog-digital conversion; Power supplies; Power system harmonics; Reactive power; Resonance; Snubbers; Switches; Switching converters; Zero current switching; Zero voltage switching;

fLanguage

English

Publisher

ieee

Conference_Titel

Telecommunications Energy Conference, 2000. INTELEC. Twenty-second International

Conference_Location

Phoenix, AZ

Print_ISBN

0-7803-6407-4

Type

conf

DOI

10.1109/INTLEC.2000.884320

Filename

884320