A ZVT PWM boost converter using an auxiliary resonant source

Author

Martins, M.L. ; Gründling, H.A. ; Pinheiro, H. ; Pinheiro, J.R. ; Hey, H.L.

Author_Institution

Power Electron. & Control Res. Group-GEPOC, Univ. Fed. de Santa Maria, Brazil

Volume

2

fYear

2002

fDate

2002

Firstpage

1101

Abstract

This paper proposes a zero-voltage transition (ZVT) PWM boost converter with a resonant auxiliary circuit. It enables the main switch to be turned on and off with zero voltage and the auxiliary switch to be turned on and off with zero current. Additionally, all diodes commutate under soft conditions. The soft-switching conditions are achieved without penalizing the converter conduction losses and they can be maintained for a wide line and load ranges. The converter operation is explained and analyzed, and its feasibility is confirmed by experimental results obtained from a 1 kW, 100 kHz laboratory prototype. It is demonstrate a gain in efficiency about 1.4% higher than the conventional ZVT PWM boost converter

Keywords

DC-DC power convertors; PWM power convertors; commutation; resonant power convertors; switching circuits; 1 kW; 100 kHz; ZVS; ZVT PWM boost power converter; auxiliary resonant source; conduction losses; line ranges; load ranges; main switch; soft-switching conditions; zero current switching; zero-voltage transition; Electromagnetic interference; Pulse width modulation; Pulse width modulation converters; RLC circuits; Resonance; Stress; Switches; Switching converters; Switching frequency; Zero voltage switching;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Power Electronics Conference and Exposition, 2002. APEC 2002. Seventeenth Annual IEEE

Conference_Location

Dallas, TX

Print_ISBN

0-7803-7404-5

Type

conf

DOI

10.1109/APEC.2002.989381

Filename

989381