特种螺线管磁场分布及自感系数的研究

Computation of the magnetic field distribution and self-induced coefficient of the special solenoid

自感是电磁感应现象中的重要概念,关于自感系数的定义可归纳为静态法、动态法、磁能法三种。文章在讨论分析载流长直导线、载流螺线管全空间磁场分布的基础上,利用叠加原理,求解特种螺线管的空间磁场分布;利用磁能法,解析计算长直特种螺线管单位长度的自感系数。

The self--induced coefficient is an important concept in the electromagnetic induction phenomenon. There are three definitions for it：static definition, dynamic definition and energy definition. In this paper, based on discussing and analyzing the magnetic field distribution of current--carrying conductor and current--carrier solenoid, the magnetic field, produced by the special solenoid in the space, is calculated by using superposition principle of the magnetic field, and the self--induced coefficient per unit length of the special solenoid is calculated by energydefinition.