Title :
A self sustained oscillation controlled three level AC-DC single stage converter
Author :
Pahlevaninezhad, Majid ; Das, Pritam ; Jain, Praveen ; Bakhshai, Alireza ; Moschopoulos, Gerry
Author_Institution :
Electr. & Comput. Eng. Dept., Queen´´s Univ., Kingston, ON, Canada
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 :
AC-DC power convertors; oscillations; resonant power convertors; voltage control; IEC-6100-3-2 Class-A limits; ZVS; computer server; current harmonic contents; power 1.5 kW to 150 kW; self-sustained oscillation control technique; switch voltage stress; telecom applications; three-level resonant AC-DC single-stage converter; voltage 12 V; voltage 85 V to 265 V; voltage control; Inductors; Resonant frequency; Switches; Switching frequency; Voltage control; Zero voltage switching;
Conference_Titel :
Applied Power Electronics Conference and Exposition (APEC), 2012 Twenty-Seventh Annual IEEE
Conference_Location :
Orlando, FL
Print_ISBN :
978-1-4577-1215-9
Electronic_ISBN :
978-1-4577-1214-2
DOI :
10.1109/APEC.2012.6165967
