基于SOC的V2G充电桩充放电控制策略研究  

Research on control strategy of V2G charging pile based on SOC

作　　者：刘胜永 曹括 周冀龙 陈平飞 王曹阳 LIU Shengyong;CAO Kuo;ZHOU Jilong;CHEN Pingfei;WANG Caoyang(School of Electrical and Information Engineering,Guangxi University of Science and Technongy,Liuzhou 545006,China)

机构地区：[1]广西科技大学电气与信息工程学院,广西柳州545006

出　　处：《广西科技大学学报》2019年第1期59-66,共8页Journal of Guangxi University of Science and Technology

基　　金：国家自然科学基金项目(61563006);广西科技攻关项目(桂科攻1598008-2);广西研究生创新项目(GKYC201801)资助

摘　　要：随着环境污染日益严峻,V2G技术越来越受到人们的重视.针对电动汽车电池"荷-源"双重性,采用AC/DC和DC/DC两级式拓扑结构,提出一种结合用户选择和电动汽车SOC的控制策略,来控制电动汽车和微电网之间能量双向流动.其中AC/DC采用前馈解耦的电压电流双闭环实现整流或逆变,DC/DC在降压充电时采用恒流控制,在升压放电时采用恒压控制.该策略会优先选择用户输入的工作模式,当用户无输入时会根据电动汽车电池SOC、当前电网运行状态和当前电价自动选择充电或放电工作模式,通过搭建仿真模型及结果分析,证明模型和控制策略的正确性和有效性.With the increasingly serious environmental pollution,V2G technology has received more and more attention.Aiming at the duality of"charge-source"of electric vehicle battery,adopting AC/DC and DC/DC two-stage topology,a control strategy combining user selection and electric vehicle SOC is proposed to control the energy between electric vehicle and microgrid.AC/DC in two-stage topology uses feedforward decoupling voltage-current double-loop to achieve rectification or inverter.DC/DC adopts constant current control in step-down charging,and constant voltage control in boost discharge.The strategy will preferentially select the working mode input by the user.When the user has no input,the charging or discharging working mode will be automatically selected according to the SOC of the electric vehicle,the current grid running state and the current electricity price.The model and control strategy are proved to be correct and effective by constructing the simulation model and result analysis.

关 键 词：V2G 电池SOC 能量双向流动 自动充放电 

分 类 号：TM912[电气工程—电力电子与电力传动]