不平衡电网电压下三相 OBC 并网分析  

Analysis of Three-phase OBC Grid Connection based on Unbalanced Grid Voltage

作　　者：胡刚 Hu Gang

机构地区：[1]比亚迪汽车工业有限公司,广东深圳518118

出　　处：《时代汽车》2024年第22期118-120,共3页Auto Time

摘　　要：对当前11kw和22kw的三相OBC来说,双向工作能力已经成为主流的需求。V2G(Vehicle-to-Grid)的商业模式日渐成熟。电网电压不平衡和电网电压跌落是电网常见故障,文章介绍了11kw/22kw三相OBC的常见拓扑,基于不平衡分量正负序分解,提出以抑制并网电流负序分量为控制目标的控制策略,通过仿真分析发现采用该控制策略后,并网电流波形质量良好,谐波畸变率远低于并网标准要求,可以实现OBC的安全稳定并网。For the current 11kw and 22kw three-phase OBC,bidirectional working capability has become the mainstream demand.The Vehicle-to-Grid(V2G)business model is maturing day by day.Based on the positive and negative sequence decomposition of the unbalanced components,a control strategy with the control goal of suppressing the negative sequence components of the grid-connected current is proposed,and it is found that after adopting the control strategy,the waveform quality of the grid-connected current is good,and the harmonic distortion rate is much lower than the requirements of the grid-connected standard,which can realize the safe and stable grid-connected connection of OBC.

关 键 词：三相 OBC 电网电压不平衡 电网跌落 负序电流 

分 类 号：TM7[电气工程—电力系统及自动化]