混合动力轿车动力线缆对整车电磁辐射干扰的仿真与试验研究  

Simulation and Experimental Study on the Electromagnetic Radiation Interference of Power Cables in Hybrid Electric Cars

作　　者：杜明磊[1,2] 徐中明[1] 丁良旭 

机构地区：[1]重庆大学机械工程学院,重庆400030 [2]重庆通信学院电力工程系,重庆400035 [3]重庆市电磁兼容工程技术研究中心,重庆401122

出　　处：《汽车工程》2014年第6期734-739,共6页Automotive Engineering

基　　金：重庆市科学技术委员会科技攻关项目(CSTC;2009AB6039)资助

摘　　要：通过分析混合动力轿车内动力线缆的电磁耦合路径,分别建立整车车身和动力线缆的电磁仿真模型,采用"场-路"耦合方法推导出线缆电磁辐射强度的计算模型,进而进行动力线缆电磁辐射特性的仿真。结果表明,动力线缆长度的变化会改变其电磁辐射频谱分布,对辐射强度影响很小;端接电阻和线缆离地距离对线缆的辐射强度影响明显,电阻越大、离地距离越大,则动力线缆辐射越强;最后通过实车测试证实,动力线缆的屏蔽对降低其电磁辐射强度有良好效果。By analyzing the electromagnetic coupling path of power cable in hybrid electric cars, the electromagnetic simulation models for car body and power cable are established respectively. Then the calculation model for the electromagnetic radiation intensity of power cable is derived and the electromagnetic radiation characteristics of power cable are simulated. The results show that the length of power cable can change its frequency spectral distribution of electromagnetic radiation, but only has a little effect on radiant intensity. The effects of terminal resistance and the distance between cable and car body are obvious. With the increases in terminal resistance and the distance to earth point, the radiation of power cable will become more intense. Finally the test on real car verifies the good effects of power cable shielding.

关 键 词：混合动力轿车 动力线缆 电磁辐射强度 传输线模型 

分 类 号：U469.7[机械工程—车辆工程] U467[交通运输工程—载运工具运用工程]