A passive clamp circuit for BIFRED converter

Author

Tuomainen, Vesa

Author_Institution

Inst. of Intelligent Power Electron., Helsinki Univ. of Technol., Finland

Volume

2

fYear

2003

fDate

9-13 Feb. 2003

Firstpage

658

Abstract

BIFRED is a well-known single-stage AC/DC converter. The converter integrates a power factor corrector stage and a DC-DC stage to a single switch converter. Due to this integration the leakage inductance of the transformer has a pronounced effect on the voltage stress of the switch. In this paper we propose a passive clamp circuit that clamps the voltage over the switch to a relatively low and predictable value. This allows for the use of a switching device of a lower voltage rating and, therefore, a device with a lower on-resistance and conduction losses.

Keywords

AC-DC power convertors; inductance; leakage currents; passive networks; power factor correction; switching convertors; transformers; BIFRED converter; DC-DC stage; conduction losses; lower voltage rating; on-resistance losses; passive clamp circuit; power factor corrector stage; single switch converter; single-stage AC-DC converter; switching device; transformer leakage inductance; voltage stress effect; Clamps; DC-DC power converters; Inductance; Resonance; Snubbers; Stress; Switches; Switching circuits; Switching converters; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Power Electronics Conference and Exposition, 2003. APEC '03. Eighteenth Annual IEEE

Conference_Location

Miami Beach, FL, USA

Print_ISBN

0-7803-7768-0

Type

conf

DOI

10.1109/APEC.2003.1179284

Filename

1179284