A novel soft-switching DC-DC converter with high-step-down conversion

Author

Huo Cailing ; Zhao Jinbin ; Qu Keqing ; Li Fen

Author_Institution

Coll. of Electr. Eng., Shanghai Univ. of Electr. Power, Shanghai, China

fYear

2014

fDate

5-8 Nov. 2014

Firstpage

946

Lastpage

952

Abstract

In view of the problem of traditional single-stage DC-DC converter transform difficult in the 380V DC micro-grid composed of distributed power, this paper proposes a novel topology, achieving high-step-down ratio and soft-switching. Based on the analysis of its basic principle, this paper gives the soft-switching conditions, and discusses the stability of the circuit in sliding mode variable structure control (SMVC) by building small-signal model. Finally, the simulation proves the correctness of theoretical analysis.

Keywords

DC-DC power convertors; distributed power generation; power generation control; variable structure systems; zero current switching; zero voltage switching; DC microgrid; circuit stability; distributed power; high-step-down conversion; high-step-down ratio; single-stage DC-DC converter; sliding mode variable structure control; small-signal model; soft-switching DC-DC converter; theoretical analysis; Clamps; MATLAB; Rectifiers; Stress; Switches; DC micro-grid; SMVC; component; high-step-down ratio; soft-switching;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronics and Application Conference and Exposition (PEAC), 2014 International

Conference_Location

Shanghai

Type

conf

DOI

10.1109/PEAC.2014.7037987

Filename

7037987