基于改进VSG技术双向充电桩控制策略研究  

Research on control strategy of bidirectional charging pile based on improved VSG technology

作　　者：邱存勇[1] 宋佳 宋海亮 刘太豪 QIU Cunyong;SONG Jia;SONG Hailiang;LIU Taihao(College of Electrical Engineering and Information,Southwest Petroleum University,Chengdu Sichuan 610500,China)

机构地区：[1]西南石油大学电气信息学院,四川成都610500

出　　处：《电源技术》2021年第7期936-940,共5页Chinese Journal of Power Sources

基　　金：国家自然科学基金资助项目(51607151)。

摘　　要：随着能源的日益紧缺,新能源汽车的应用越来越广泛。电动汽车的充放电接口实现了能量的双向流动,传统变换器由于缺少惯性与阻尼,大规模电动汽车的使用必将给电力系统带来一定的冲击,若不加以控制,必将影响到用户的用电质量。提出一种基于V2G模式的智能充放电技术,将虚拟同步机技术应用于电动汽车的充放电控制上,通过模拟同步电机的惯性与阻尼特性,缓解了充放电时功率的波动,同时加入模型预测控制提高系统动态性能。通过MATLAB/Simulink搭建的电动汽车充放电系统,实验结果验证了该方法有效地提高了系统充放电效率。With the increasing shortage of energy,new energy vehicles are widely used.The charging and discharging interface of electric vehicle realizes the bidirectional flow of energy.Due to the lack of inertia and damping in the traditional converter,the use of large-scale electric vehicles will bring certain impact on the power system.If it is not controlled,the power quality of users will be affected.Therefore,this paper proposed an intelligent charging and discharging technology based on V2G mode.The virtual synchronous machine technology was applied to the charging and discharging control of electric vehicles.By simulating the inertia and damping characteristics of synchronous motor,model predictive control was added to improve the dynamic performance of the system and alleviate the power fluctuation during charging and discharging.Through the charging and discharging system of electric vehicle built by MATLAB/Simulink,the experimental results show that the method can effectively improve the charging and discharging efficiency of the system.

关 键 词：充放电控制 虚拟同步机 模型预测控制 V2G 

分 类 号：TM921.5[电气工程—电力电子与电力传动]