电动公交车大电流充电机谐波仿真分析与治理

The harmonic simulation analysis and its suppression measures of electric bus heavy-current charger

为了降低现有大电流充电机在充电过程中注入电网电流的谐波含量,使之符合国家电网公司规定的电流标准,对现有充电机充电电流的谐波含量进行了理论分析,利用十二脉整流和增加并联APF的方式来抑制充电过程中注入电网的电流谐波含量过高的问题.在Matlab/Simulink环境下搭建不同充电机仿真模型进行仿真分析,证明了上述两种方法对现有充电机的谐波抑制有非常好的效果.

In order to reduce the current harmonic content of the existing electric bus heavy-current charger in the process of charging into the grid and meet the requirements of state grid corporation current standards,we made theoretical analysis and proposed to deal with problem of harmonic content overtop by using 12-pulse rectifier charger and adding parallel APF.Then we set up different type simulation models of electric bus charger for the simulation analysis in the environment of Matlab/Simulink,and proved that the above two methods in harmonic suppression of existing electric bus charger have very good effect.