车载暖风机传导干扰的磁环抑制机理  

Research on Mechanism of Ferrite Ring for Suppressing Conducted Emission from On-board Blower Motor

作　　者：杭州 杜明星 丁一夫[2] 魏克新 

机构地区：[1]天津市复杂系统控制理论及应用重点实验室 [2]中国汽车技术研究中心

出　　处：《安全与电磁兼容》2016年第6期73-76,共4页Safety & EMC

摘　　要：车载暖风机产生的传导干扰影响整车系统的电磁兼容性能,采用磁环抑制传导干扰,可有效地截断传导干扰通道。研究了将不同绕制和连接方式的磁环用于车载暖风机系统对传导干扰的抑制情况,并进行了试验测试。结果表明,在0.15-30 MHz频段,磁环上电缆的绕制圈数越多,其电路电感和阻抗越大。为了降低EMC整改成本,在磁环个数不变的前提下,磁环上绕制线圈能得到更好的抑制效果。The conducted emission（CE） from on-board blower motor is so serious that it is one of the most important interference sources in electric vehicle（EV）.Ferrite rings could be applied to cut off interference route effectively to decrease CE.The suppression mechanism of ferrite ring in different forms to CE from motor is studied.According to the tests of ferrite rings, the results show that, the more coils on the ferrite rings, the greater inductance and impedance in the circuit during frequency range 0.15~30 MHz.To reduce rectification cost of EMC, the ferrite rings with coils will get better suppression effect comparing to the same number of ferrite rings without coils.

关 键 词：磁环 车载暖风机 传导干扰 电感 阻抗 

分 类 号：U463.6[机械工程—车辆工程]