Title :
A novel soft-switching DC-DC converter with high-step-down conversion
Author :
Fen Li ; Cailing Huo ; Jinbin Zhao ; Keqing Qu
Author_Institution :
Coll. of Electr. Eng., Shanghai Univ. of Electr. Power, Shanghai, China
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 softswitching. 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; stability; switching convertors; variable structure systems; SMVC; circuit stability; dc microgrid; distributed power; high-step-down conversion; high-step-down ratio; single-stage converter; sliding mode variable structure control; small-signal model; soft-switching dc-dc converter; voltage 380 V; Capacitors; Equations; Inductors; Integrated circuit modeling; Mathematical model; Stability analysis; Topology;
Conference_Titel :
Electrical Machines and Systems (ICEMS), 2014 17th International Conference on
Conference_Location :
Hangzhou
DOI :
10.1109/ICEMS.2014.7013806
