Improved three-phase single-stage isolated PFC converter with voltage-clamping in primary side

Author

Meng, Tao ; Ben, Hongqi ; Wang, Daqing

Author_Institution

Dept. of Electr. Eng., Harbin Inst. of Technol., Harbin

fYear

2008

fDate

17-20 Oct. 2008

Firstpage

1909

Lastpage

1913

Abstract

An improved three-phase single-stage isolated power factor correction (PFC) converter topology is studied in this paper. The converter is based on full-bridge structure and operates in constant-frequency discontinuous conduction mode (DCM). Through the analysis on the working principle and mechanism of voltage spike of the original topology, a voltage-clamping circuit is proposed and added in primary side of the converter which can suppress the voltage spike and improve the soft-switching of the leading-leg switches. The analysis of input current and realization conditions for DCM are given in details. Finally the validity of theoretical analysis is verified through simulation and experiment.

Keywords

bridge circuits; power factor correction; switching convertors; constant-frequency discontinuous conduction mode operation; full-bridge structure; power factor correction; soft-switching condition; three-phase single-stage isolated PFC converter; voltage spike mechanism; voltage-clamping circuit; Analytical models; Bridge circuits; Circuit topology; Inductors; Reactive power; Rectifiers; Switches; Switching circuits; Switching converters; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Machines and Systems, 2008. ICEMS 2008. International Conference on

Conference_Location

Wuhan

Print_ISBN

978-1-4244-3826-6

Electronic_ISBN

978-7-5062-9221-4

Type

conf

Filename

4771051