A snubber cell for single-stage PFC with a boost type input current shaper and isolated dc/dc converter

Author

Zhang, Qian ; Hu, Habing ; Osama, Abdel-Rahman ; John, Shen ; Batarseh, Issa

Author_Institution

Dept. of Electr. Eng. & Comput. Sci., Univ. of Central Florida, Orlando, FL, USA

fYear

2011

fDate

17-22 Sept. 2011

Firstpage

2609

Lastpage

2613

Abstract

This paper proposes a lossless snubber cell for all single-stage PFC with a boost type input current shaper and an isolated dc/dc converter. The single auxiliary switch of the snubber cell shares the same switching signal as the PFC main switch; both switches operate under soft switching way. Various stages of the switching cycle have been comprehensively analyzed to explain the operation principle of the soft switching transition. This soft switching technique reduces switching power loss and improves efficiency. The simulation results verify the practicable of the new snubber cell. 100W prototypes are built on the bi-flyback PFC converter and the BIFRED PFC converter; experimental waveforms match with simulation results.

Keywords

DC-DC power convertors; power factor correction; snubbers; switching convertors; zero current switching; zero voltage switching; BIFRED PFC converter; biflyback PFC converter; boost type input current shaper; isolated DC-DC converter; lossless snubber cell; power 100 W; power loss switching; single auxiliary switch; single-stage PFC; soft switching technique; switching signal; Capacitors; Inductance; Inductors; Leakage current; Snubbers; Switches; Video recording;

fLanguage

English

Publisher

ieee

Conference_Titel

Energy Conversion Congress and Exposition (ECCE), 2011 IEEE

Conference_Location

Phoenix, AZ

Print_ISBN

978-1-4577-0542-7

Type

conf

DOI

10.1109/ECCE.2011.6064117

Filename

6064117