A self sustained oscillation controlled three level AC-DC single stage converter

Author

Das, Pritam ; Moschopoulos, Gerry ; Jain, Praveen K.

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of Western Ontario, London, ON, Canada

fYear

2010

fDate

6-10 June 2010

Firstpage

1

Lastpage

7

Abstract

An improved three level single-stage resonant ac-dc single stage converter suitable for computer server and telecom applications is proposed in this paper. The proposed converter can operate with universal input ac voltage (85Vrms∼265Vrms) and its output voltage is 12V. It can operate with natural ZVS for a load range as wide as 1.5kW down to 150W while maintaining a maximum switch voltage stress that is much less than 450V. The input current harmonic contents of the proposed converter are in compliance with IEC-6100-3-2 Class-A limits for all operating conditions. A novel self-sustained oscillation control technique is applied to control the output voltage of the proposed converter instead of conventional variable frequency control.

Keywords

Analog-digital conversion; Application software; Resonance; Stress; Switches; Telecommunication computing; Telecommunication control; Telecommunication switching; Voltage control; Zero voltage switching;

fLanguage

English

Publisher

ieee

Conference_Titel

Telecommunications Energy Conference (INTELEC), 32nd International

Conference_Location

Orlando, FL, USA

Print_ISBN

978-1-4244-3383-4

Electronic_ISBN

978-1-4244-3384-1

Type

conf

DOI

10.1109/INTLEC.2010.5525671

Filename

5525671