DocumentCode :
2669675
Title :
A Novel ZVS PWM FB DC/DC Converter Using Auxiliary Resonant Net
Author :
Sun, Tiecheng ; Zhu, Xueqin ; Liu, Hongpeng ; Liang, Lian ; Gao, Peng
Author_Institution :
School of Electric Engineering & Automation, Harbin Institute of Technology, Harbin, Heilongjiang Province, China
fYear :
2006
fDate :
Aug. 30 2006-Sept. 1 2006
Firstpage :
728
Lastpage :
732
Abstract :
In conventional converter phase-shifted zero-voltage-switching DC/DC converter, lagging leg losses ZVS capability at light load conditions, and output rectifier diodes operate with hard switching. A novel soft-switching bi-directional converter employing auxiliary resonant net is proposed to solve these problems. The proposed converter can not only achieve soft switching but also eliminate the circulating current by adding an active clamp circuit in the secondary side and using saturable inductor in the primary side. In result, soft-switching operation range is extended. And all switches satisfy ZVS conditions. Synchronous rectifier technique is adopted in the converter, so the conduction loss is eliminated. In this paper TMS320F240 DSP is used as control chip, and the digital control system of the converter is designed. The experimental results show the feasibility of the proposed converter.
Keywords :
Bidirectional control; DC-DC power converters; Diodes; Leg; Pulse width modulation; Pulse width modulation converters; Rectifiers; Resonance; Switching converters; Zero voltage switching;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Power Electronics and Motion Control Conference, 2006. EPE-PEMC 2006. 12th International
Conference_Location :
Portoroz
Print_ISBN :
1-4244-0121-6
Type :
conf
DOI :
10.1109/EPEPEMC.2006.4778485
Filename :
4778485
Link To Document :
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