摘要
本文提出一种场路协同仿真方法,可用于预测电动汽车DC-DC变换器传导发射的电磁兼容性能。通过该方法得到电动汽车DC-DC变换器的传导噪声电压,仿真与实测结果在量级、趋势和尖峰方面都有很好的一致性,表明该方法有较好的可行性和准确性。所提方法仅需要版图设计文件、磁心器件规格书、器件数据手册和壳体三维模型就可以预测和评估变换器传导发射的电磁兼容性能,因此特别适用于DC-DC变换器开发前期;同时也适用于此类问题的整改过程,只需要在仿真电路中进行调整输出端滤波电容值、添加磁环等改进,就可以快捷而准确地评估改进前后的差异,为DC-DC变换器传导干扰问题的定位和改善提供有力支撑。
In this study,a co-simulation analytical method is introduced,which can be used to calculate the conducted noise voltage of DC-DC converter in electric vehicle.The simulation result of this method is in good agreement with the test result in magnitude,trend and peak values,which shows that the method is feasible and practical.This method is especially applicable to the early stage of DC-DC converter development.Only the PCB layout,magnetic core specification,device datasheet and 3D model are required to predict and evaluate the conducted emission of the converter.It is a good method to evaluate the optimization and improvement impacts by adding magnetic core into the full 3D model,or changing the value of the output filter capacitors in the simulation circuit.It provides an important support for the positioning and rectification of component level electromagnetic interference problem of conducted emission in DC-DC converter.
作者
李建群
LI Jianqun(GAC Aion New Energy Vehicle Co.,Ltd,Guangzhou 510000)
出处
《电气技术》
2022年第11期30-36,43,共8页
Electrical Engineering
