摘要
针对电动汽车快速充电和动力电池换电功率大,造成变流器不均流问题,文章提出群系统一致性策略对群充电桩进行协同控制。考虑充电桩节点间的通信拓扑和信息交互权值以及有充电桩退出系统等客观情况,分析了系统收敛特性,然后将交互后的一致性信息与电压、电流双闭环控制策略相结合,实现了群充电桩的电压、电流状态快速一致。Matlab/Simulink仿真结果表明,所提控制方案能有效地实现多充电变流器的电流一致和电压稳定,对实现电动汽车快速充电和大规模动力电池充换电有一定的理论意义。
In view of the problem of current distribution unevenness in converters caused by the fast charging of electric vehicles and the large power change of power batteries, swarm system consensus algorithm for multi charging piles to control cooperatively is proposed. Considering objective conditions that of communication topology charging pile nodes, information interaction weights and charging piles exiting system, the convergence characteristic of system is analyzed using graph theory. Then the control strategy of consensus algorithm is combined with voltage and current double closed-loop and the voltage and current states of multi charging piles reach consensus rapidly. The Matlab/Simulink results show that the proposed control strategy can effectively realize voltage constant and current sharing of converters. It has a certain theoretical significance for the rapid charging and replacing of EVs.
作者
柴万腾
程志江
李永东
陈星志
Chai Wanteng;Cheng Zhijiang;Li Yongdong;Chen Xingzhi(College of Electrical Engineering, Xinjiang University, Urumqi 830047, China;Department of Electrical Engineering, Tsinghua University, Beijing 100084, China)
出处
《可再生能源》
CAS
北大核心
2018年第6期882-887,共6页
Renewable Energy Resources
基金
国家自然科学基金项目(51567022)
新疆维吾尔自治区重大攻关计划项目(2015211C252)
关键词
电动汽车
充电桩
一致性算法
electric vehicle
charging pile
consensus algorithm
