A time-domain stability analysis method for LLC resonant converter based on Floquet theory

被引：2
|
作者：
Li, Hong [1 ]
Zou, Ying [1 ]
Jiang, Xiaheng [1 ]
Liu, Chen [1 ]
机构：
[1] Beijing Jiaotong Univ, Beijing 100044, Peoples R China
来源：
MICROELECTRONICS RELIABILITY | 2020年 / 114卷
基金：
中国国家自然科学基金;
关键词：
Floquet theory; LLC resonant converters; Matrix eigenvalue; Time-domain stability analysis;
D O I：
10.1016/j.microrel.2020.113850
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
LLC resonant converters have been widely used in engineering fields, and the stability of LLC resonant converters is still a research hotspot due to its variable frequency. In this paper, a time-domain stability analysis method based on Floquet theory is firstly proposed and applied to LLC resonant converter. Taking the half-bridge LLC resonant converter with PI controller as an example, its closed-loop time-domain model is established, and the stability of LLC resonant converter is following analyzed according to the eigenvalues of the time-domain model. Based on the analysis results, the stable range of the LLC resonant converter with different control parameters is obtained. Further, the accuracy and effectiveness of the proposed stability analysis method based on Floquet theory are verified by simulation results. Therefore, this paper provides a new method for the stability analysis of LLC resonant converters.
引用
收藏
页数：5
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