【摘要】 低压大电流混合封装电力电子集成模块(IPEM)内部功率电路与控制和驱动电路之间的互感耦合是电磁干扰的主要途径之一,为了准确预测电磁干扰的强度,需要对耦合互感进行精确计算,文中针对这个问题展开研究。首先,分析了功率电路的高频环流问题;其次,采用局部元等效电路(PEEC)原理对高频环流回路与典型控制和驱动回路之间的耦合互感进行了计算;最后,通过仿真和实验对计算结果进行了验证,表明该文对高频环流的干扰分析以及对耦合互感的计算方法是正确并且有效的。更多还原

【Abstract】 The mutual inductance coupling between power circuit and control/drive circuit is main EMI approach inside a hybrid Integrated Power Electronic Module (IPEM) with low voltage and high current. In order to evaluate the effect of EMI, the coupling mutual inductance needs to be calculated accur-ately. This paper studies this problem. Firstly, the HF circulation current problem of power circuit is analyzed; secondly, an effective modeling and calculation method based on Partial Element Equivalent Circuit (PEEC) is proposed to calculate the coupling mutual inductance; Finally, the simulation and experiment verify the calculation results and show that the HF circulation current analysis and the mutual inductance calculation method to evaluate EMI are correct and effective.更多还原