VIENNA-LLC 型充电模块阻抗建模与稳定性分析

吉林大学学报(信息科学版) ›› 2025, Vol. 43 ›› Issue (3): 565-574.

VIENNA-LLC 型充电模块阻抗建模与稳定性分析

杨陈¹, 鲍杰¹, 陈良亮¹, 黄小庆²

1. 国网电力科学研究院有限公司国电南瑞南京控制系统有限公司,南京211106; 2. 湖南大学电气与信息工程学院,长沙410082

收稿日期:2024-04-19 出版日期:2025-06-19 发布日期:2025-06-19
作者简介:杨陈(1990— ), 男, 江苏盐城人, 国网电力科学研究院有限公司高级工程师, 主要从事电动汽车充换电及储能技术研究, (Tel)86-15951672686(E-mail)15951672686@139. com
基金资助:
国家电网有限公司科技基金资助项目(5400-202327232A-1-1-ZN)

Impedance Modeling and Stability Analysis of VIENNA-LLC Type Charging Module

YANG Chen¹, BAO Jie¹, CHEN Liangliang¹, HUANG Xiaoqing²

1. NARI Technology Development Limited Company, State Grid Electric Power Research Institute, Nanjing 211106, China; 2. School of Electrical and Information Engineering, Hunan University, Changsha 410082, China

Received:2024-04-19 Online:2025-06-19 Published:2025-06-19

摘要/Abstract

摘要： 为解决电动汽车级联型充电模块整体阻抗模型的构建问题,提出了一种基于VIENNA整流器和全桥LLC 谐振变换器级联型充电模块阻抗建模方法。首先,确定一种充电模块典型拓扑结构,分别构建了基于状态空间法的前级VIENNA整流器小信号模型和基于等效电路法的后级全桥LLC谐振变换器小信号模型。其次,结合控制策略分别得到VIENNA整流器的闭环输出阻抗和全桥LLC谐振变换器的闭环输出阻抗及输入阻抗。在此基础上,整合前后级的小信号模型及控制策略可得到充电模块的小信号电路模型,进而推导出充电模块的整体阻抗模型。最后,依据奈奎斯特稳定判据,分析了系统参数对充电模块稳定性的影响;基于Matlab/Simulink 搭建充电模块仿真系统,仿真结果验证了充电模块整体阻抗模型的正确性。所提建模方法实现了单级架构到两级架构型充电模块的整体阻抗建模,为分析充电模块的并联稳定性提供了理论基础。

关键词: 充电模块, 阻抗建模, 稳定性分析, VIENNA整流器, 全桥LLC谐振变换器

Abstract: In order to solve the problem of constructing the overall impedance model of electric vehicle cascade- type charging module, a cascade-type charging module impedance modeling method based on VIENNA rectifier and full-bridge LLC resonant converter is proposed. Firstly, a typical topology of the charging module is determined, and the small signal model of the front VIENNA rectifier based on the state space method and the rear full-bridge LLC resonant converter based on the equivalent circuit method are constructed respectively. Secondly, the closed-loop output impedance of VIENNA rectifier and the closed-loop output impedance and input impedance of full-bridge LLC resonant converter are obtained by combining the control strategy. The small Signal circuit model of the charging module can be obtained by integrating the front and rear small signal models and control strategies, and then the overall impedance model of the charging module can be derived. According to Nyquist stability criterion, the influence of system parameters on the stability of charging module is analyzed. The charging module simulation system is built based module. The proposed modeling method realizes the overall impedance modeling of single-stage to two-stage charging modules, and provides a theoretical basis for analyzing the parallel stability of charging modules in the future.

Key words: charging module, impedance modeling, stability analysis, VIENNA rectifier, full bridge LLC resonant converter

中图分类号:

TP17

杨陈, 鲍杰, 陈良亮, 黄小庆. VIENNA-LLC 型充电模块阻抗建模与稳定性分析[J]. 吉林大学学报(信息科学版), 2025, 43(3): 565-574.

YANG Chen, BAO Jie, CHEN Liangliang, HUANG Xiaoqing. Impedance Modeling and Stability Analysis of VIENNA-LLC Type Charging Module[J]. Journal of Jilin University (Information Science Edition), 2025, 43(3): 565-574.

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