新能源汽车准快速充电装置抑制纹波电压方法研究

Research on the Method of Suppressing Ripple Voltage in Quasi Fast Charging Devices for New Energy Vehicles

本文主要研究增加有源电力滤波器功能的新能源汽车准快速充电装置。分析增大新能源汽车交流充电装置充电功率后,充电器内纹波电压产生的机理以及危害。通过在充电装置内并联有源电力滤波器的方式,通过低通滤波器提取纹波电压后补偿抑制充电时产生的纹波电流。通过模拟测试后的结果分析,可以有效降低纹波电压的产生。

The article mainly researches on the quasi fast charging device for new energy vehicles that adds the function of active power filters.Analyze the mechanisms and hazards of ripple voltage in the charger when increasing the charging power of AC charging devices for new energy vehicles.By parallel connecting an active power filter in the charging device,the ripple voltage is extracted through the low-pass filter and then compensated to suppress the ripple current generated during charging.By analyzing the results of simulation testing,the generation of ripple voltage can be effectively reduced.