电器与能效管理技术Issue(4)：74-81,89,9.DOI:10.16628/j.cnki.2095-8188.2024.04.010
V2G车网互联的双向AC/DC变换器直流阻抗模型及特性分析
DC Impedance Modeling and Characteristic Analysis of Bidirectional AC/DC Converter for V2G System
摘要
Abstract
The control of bidirectional AC/DC converters and the DC output impedance are crucial for the grid connected operation and stability analysis of electric vehicle charging stations.First,the virtual synchronous motor(VSM)control strategy with DC droop link is proposed,and the upper-level power command is used to realize the non-differential regulation for DC voltage of the bidirectional AC/DC converter.Then,a small signal model of the VSM power loop is established to analyze the interaction and influence between active power transmission,active power command and DC voltage.Furthermore,the DC output impedance model of the bidirectional AC/DC converter controlled by the DC droop VSM is established,and the influence of key parameters such as damping and inertia coefficient,DC side capacitance,transmission power,and DC droop coefficient on the DC output impedance is further analyzed in detail.Finally,the simulation result and impedance measurement verify the effectiveness and correctness of DC droop VSM control strategy and the proposed impedance model.关键词
双向AC/DC变换器/直流下垂VSM控制/小信号阻抗模型/阻抗测量Key words
bidirectional AC/DC converter/DC droop VSM control/small signal model/impedance measurement分类
信息技术与安全科学引用本文复制引用
张颖,伏睿,唐林权,荣高升,申亚波..V2G车网互联的双向AC/DC变换器直流阻抗模型及特性分析[J].电器与能效管理技术,2024,(4):74-81,89,9.基金项目
国网新疆电力有限公司科技项目(SGXJJJ00JSJS2310042) （SGXJJJ00JSJS2310042）
