Stability Analysis for Two-stage Cascaded DC-DC Converters System based on Describing Function Method

被引：0
|
作者：
Li, Hong [1 ]
Liu, Chen [1 ]
Zhang, Xiaochao [1 ]
Guo, Zhongya [1 ]
Zheng, Trillion Q. [1 ]
机构：
[1] Beijing Jiaotong Univ, Sch Elect Engn, Beijing 10044, Peoples R China
来源：
2018 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE) | 2018年
基金：
中国国家自然科学基金;
关键词：
DC-DC converters; cascaded system; stability analysis; describing function method; LOAD IMPEDANCE SPECIFICATION; POWER;
D O I：
暂无
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
Though the sub-module works stably alone, the cascaded DC-DC converters system may work unstably on account of the interaction among the sub-modules. Therefore, the stability analysis of cascaded DC-DC converters system is a hot issue. In this paper, at the beginning, the stability criterion for single DC-DC converter based on describing function method is reviewed. Following that, taking two-stage cascaded boost converters system as an example, the linearization of source converter or load converter is applied to analyze the stability of cascaded DC-DC converters system. What's more, the stability criterion for two-stage cascaded DC-DC converters system is proposed by combining the describing function method and linearization of source converter or load converter. Finally, the proposed stability criterion in this paper is verified by simulation and experimental results, which provides a novel stability analysis approach for cascaded DC-DC converters system based on describing function method.
引用
收藏
页码：4141 / 4147
页数：7
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