管状导体的集肤效应

Skin effect in tubular conductors

本文从电磁场基本方程出发,推导出管状导体中的电流分布,采用复数形式的坡印亭定理求出管状导体的交流阻抗,并与圆柱形导体的情况作了对比。实例表明,本文所给公式的计算结果和常规算法的结果吻合较好。所给表格和曲线可供设计管状导体时参考。

The current distribution in tubular conductor has been derived from the basic equation of electromagnetic field.Using the plural form of Poyn-ting theorems, the alternate impedance of tubular conductor is calculated and then compared with that of cylindric conductor. Proved by examples, results calculated by the formulus given in the article are accord with those by ordinary method.The tables and curves given are provided for reference.