电动汽车充电站的谐波分析与抑制

Harmonic analysis and suppression of charging station for electric vehicles

以某种型号电动汽车充电机构成的充电站为例,在Matlab/Simulink下仿真,结合实测数据分析充电站在电网上产生谐波的特点,有针对性地提出若干治理措施,分别进行仿真实验。结果表明,几种方案可以有效地抑制充电站对电网造成的5,7次谐波。

As a kind of nonlinear equipment, electric vehicle （EV） chargers can inject harmonics into power grid, to which generates the harmonic pollution. Taking a charging station composed of some EV chargers in a certain model as an example, Com- bined with measured data, a simulation model for the charging station is set up by Matlab, and is used to analyze the characteristics of harmonics generated by charging station. Several measures for suppressing harmonic areproposed. The simulation result indicates that the schemes can effectively suppress the 5th and the 7th harmonic current caused by charging station.