基于多端口网络理论的整车EMC预测方法

Vehicle EMC Prediction Technique Based on Multi-port Network Theory

随着汽车电子/电气化程度的提高,汽车EMC问题日益突出。本文中提出了一种基于多端口网络理论的汽车EMC预测方法。该方法能实现汽车多干扰源/敏感设备并存情况下的EMC预测,并能应用于整车开发的全过程。文中给出了整车EMC的预测方法,以及预测所需的网络耦合特性和端口等效特性的建模方法,并通过台架试验模拟整车辐射发射问题,对所提出方法的有效性进行了验证。

With the rise in the level ol electrification and electronization, the EMC problem ol a vehicle be-come more and more critical. In this paper, a vehicle EMC prediction method based on multi-port network theory is put forward,which can perform EMC prediction for a vehicle with multi interference sources and multi sensitive de-vices coexisted,and can be applied to the whole process ol vehicle development. Baside EMC prediction technique, he modeling schemes for network coupling characteristics and the equivalent characteristics ol ports needed lor EMC prediction are also given,and the effectiveness ol the technique proposed is verified through the bench tests simula-ing vehicle radiation.