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在工频磁场下,解决稀疏的金属网的屏蔽问题时,网络拓扑法与有限元方法相比,其操作简单,程序编制难度小,计算过程占用内存小,时间短。以往使用网络拓扑法计算电感参数时多采用数值积分。本文通过对等效电感参数使用直接积分计算,有效的减小了误差,通过考虑金属丝的几何结构来避免奇异积分的出现,完成整个网络电感参数的计算。
Compared with the finite element method, the network topology method solves the problem of shielding the sparse metal mesh in power frequency magnetic field. The method has the advantages of simple operation, less programming difficulty, less memory occupation and short time in the calculation process. In the past, the use of network topology method to calculate the inductance parameters using numerical integration. In this paper, the direct inductance integral calculation is used to reduce the error effectively. By considering the geometric structure of the wire to avoid the appearance of singular integral, the calculation of the inductance parameters of the whole network is completed.