DocumentCode :
3460184
Title :
A novel high efficiency soft-switched PWM boost rectifiers with low conduction losses
Author :
Lin, Weiming ; Huang, Junlai ; Wang, Jinhui ; Zou, Jianhua
Author_Institution :
Dept. of Electr. Eng., Fuzhou Univ., Fuzhou
fYear :
2008
fDate :
24-28 Feb. 2008
Firstpage :
1340
Lastpage :
1346
Abstract :
A high efficiency soft-switched Boost voltage-doubler Converter for Power Factor Pre-regulator is proposed in this paper. The topology can perform soft-switching in the two main switches and the passive switches, and zero-current switching in the auxiliary switch. Furthermore, soft commutations of the two main switches are achieved without additional current stress by the presented PWM soft-switched auxiliary circuit. A significant reduction in the conduction losses is achieved, since the circulating current for the soft switching flows only through the auxiliary circuit and a minimum number of switching devices are involved in the circulating current path, and the proposed rectifier is suit for low line input and high power applications. Computer simulation and a prototype rated at 600 W, operating 50 kHz, with an input AC voltage of 120 Vrms and an output voltage of 400 Vdc has been implemented in the laboratory. A high efficiency up to 97% and power factor over 0.997 has been measured.
Keywords :
PWM power convertors; PWM rectifiers; losses; power factor; switching convertors; zero current switching; auxiliary circuit; conduction losses; frequency 50 kHz; high power application; power 500 W; power factor preregulator; pulse width modulation; soft-switched PWM boost rectifier; switching device; voltage-doubler converter; zero-current switching; Application software; Circuit topology; Pulse width modulation; Reactive power; Rectifiers; Stress; Switches; Switching circuits; Voltage; Zero current switching;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Applied Power Electronics Conference and Exposition, 2008. APEC 2008. Twenty-Third Annual IEEE
Conference_Location :
Austin, TX
ISSN :
1048-2334
Print_ISBN :
978-1-4244-1873-2
Electronic_ISBN :
1048-2334
Type :
conf
DOI :
10.1109/APEC.2008.4522897
Filename :
4522897
Link To Document :
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