电动汽车PTC传导干扰噪声的预测与抑制  

Prediction and Suppression of PTC Conducted Interference Noise in Electric Vehicles

作　　者：黄才源 胡安琪 Huang Caiyuan;Hu Anqi(Fujian University of Science and Technology,Fuzhou 350118)

机构地区：[1]福建理工大学,福州350118

出　　处：《汽车文摘》2025年第4期56-62,共7页Automotive Digest

摘　　要：针对开关电源DC/DC变换器工作时产生的强烈的电磁干扰(EMI),提出并分析了DC/DC变换器的电磁干扰源,构建了该变换器产生EMI的传播路径,对比分析了纯电路和有印刷电路板(PCB)影响下的传导干扰,提出了添加Π型滤波器抑制DC/DC变换器电磁干扰的措施,并应用CST软件建模仿真,对抑制结果进行验证,提出的抑制方法可有效抑制开关电源电磁干扰。Aiming at the Electromagnetic Interference(EMI)caused by DC/DC converter in switching power supply,the electromagnetic interference source of DC/DC converter is proposed and analyzed,and the EMI propagation path generated by the converter is constructed.The conducted interference under the influence of pure circuit and Printed Circuit Board(PCB)is compared and analyzed,and the measures of addingΠfilter to suppress the electromagnetic interference of DC/DC converters are proposed,and the simulation of CST software is used to verify the suppression results.The results show that the suppression method proposed in this paper can effectively suppress the electromagnetic interference of switching power supply.

关 键 词：电动汽车PTC 开关电源 传导干扰 

分 类 号：U469.722[机械工程—车辆工程]