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本文通过计算示例论证了模拟电流法不但能计算均匀媒质内的磁场,还可以计算分层媒质内的磁场以及正弦似稳场。本文又提出了将模拟电流法使用于分层媒质时选取统一参考点的方法;提出了当参考点和某一匹配点重合时或作为边界条件的磁位值为未知数时,应用模拟电流间的关系作为约束条件。并指出,对于不同的具体问题,计算结果和约束条件之间的依赖关系决定于唯一性定理。文后,用模拟电流法计算了三相工频电炉馈电线中的电流分布,结果和映射法结果基本相符。
This paper demonstrates that the simulated current method not only can calculate the magnetic field in a homogeneous medium, but also can calculate the magnetic field and the sinusoidal stable field in the layered medium through calculation examples. In this paper, we propose a method to select a uniform reference point when using analog current method in layered media. It is proposed that when the reference point and a matching point coincide or when the magnetic bit value as a boundary condition is unknown, Relationship as a constraint. And pointed out that for different specific problems, the dependence between the calculation results and the constraints depends on the uniqueness theorem. After that, the current distribution in three-phase power frequency electric furnace feeder was calculated by the analog current method, and the result is basically consistent with the result of the mapping method.