Effects of switching frequency and leakage inductance on slow-scale stability in a voltage controlled flyback converter

被引：0
|
作者：
王发强 [1 ]
马西奎 [1 ]
机构：
[1] State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi’an Jiaotong University
来源：
Chinese Physics B | 2013年 / 12期
基金：
中国国家自然科学基金; 中央高校基本科研业务费专项资金资助;
关键词：
flyback converter; slow-scale stability; improved averaged model; Hopf bifurcation;
D O I：
暂无
中图分类号：
TM46 [变流器];
学科分类号：
摘要：
The effects of both the switching frequency and the leakage inductance on the slow-scale stability in a voltage controlled flyback converter are investigated in this paper. Firstly, the system description and its mathematical model are presented. Then, the improved averaged model, which covers both the switching frequency and the leakage inductance, is established, and the effects of these two parameters on the slow-scale stability in the system are analyzed. It is found that the occurrence of Hopf bifurcation in the system is the main reason for losing its slow-scale stability and both the switching frequency and the leakage inductance have an important effect on this slow-scale stability. Finally, the effectiveness of the improved averaged model and that of the corresponding theoretical analysis are confirmed by the simulation results and the experimental results.
引用
收藏
页码：137 / 144
页数：8
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