铁心电感电路零直流电流定理

Theorem of Current Containing no DC. Component in a Circuit Having Iron-core Inductors

铁心非线性电感电路电流不含非零直流分量定理是电工学克希霍夫定律的均值表现形式。本文从物理根源上揭示,即使铁心磁化曲线对称性因直流偏置而被破坏,电流直流分量也一定会在暂态过程中趋近于零。本文提供例算和实拍波形作为佐证,并在结论中强调了定理的实用价值。

By physical and mathematical deductions,we concluded what the stable current of a nonlinear inductive circuit contains no dc component.It is an average form of Kurchhoff's voltage law.In this paper,we report how the conclusion was reached.The current would finally tend to an equilibria state without any dc.Component in a transient process even though there existed a dc.bias on the magnetic core.Experimental and computer simulation results supporting the conclusion are also presented.The practical significan...