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
Key words
Three-phase OBC/Grid Voltage Imbalance/Grid Dropping/Negative Sequence Current
万方数据