一种简化传导干扰模型的巨变灵敏度方法

Conducted EMI Model Reduction based on Large Change Sensitivity

传导干扰预测的重点之一在于确定干扰的主要传播途径。这里引入巨变灵敏度(Large Change Sensitivity,简称LCS)方法,用于分析电路寄生参数对传导干扰的影响,并对模型进行简化。以一台斩波器为研究对象,建立其干扰模型,运用LCS方法对该模型进行了简化。通过实验结果,验证了LCS方法的有效性。

The key work for conducted EMI prediction is to determine the main EMI propagation path.A large change sensitivity method is presented to analyze the parasitics parameters in the system as well as to simplify the EMI model.A DC/DC buck circuit is experimentally studied.The conducted EMI model is derived and is simplified based on the large change sensitivity analysis.The proposed method is verified by the measurement.