提出了一种改进的部分元等效电路模型 ,它以矢量磁位的积分表达式和洛仑兹规范代替了矢量磁位和标量电位的积分表达式 ,对积分方程进行展开 .避免了复杂介质结构中的电容矩阵提取 ,节省了计算时间 .同时 ,它以描述系统的改进节点法方程 ( MNA)代替了具体的等效电路 .该模型可方便地嵌入更大的系统进行分层次的综合分析 .数值计算的结果与文献值吻合较好 ,表明该方法有较高的可靠性 An improved partial element equivalent circuit model is proposed, in which the integral expression of vector magnetic bit and scalar potential is replaced by the integral expression of vector magnetic bit and Lorentz standard, and the integral equation is developed. The complex medium In the meantime, it replaced the concrete equivalent circuit with the improved node law equation (MNA), which describes the system. The model can be conveniently embedded in a larger system for hierarchical comprehensive analysis The numerical results are in good agreement with the literature values, indicating that the method has high reliability