Initial transient process in a simple helical flux compression generator

作     者：杨显俊 

作者机构：Institute of Applied Physics & Computational Mathematics Beijing 100088 China 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2006年第15卷第7期

页      面：1539-1543页

核心收录：

学科分类：07[理学] 070201[理学-理论物理] 0702[理学-物理学] 

基　　金：Project supported by the National Natural Science Foundation of China (Grant No 0475012) and partially by Technology & Science Foundation of China Academy of Engineering & Physics (Grant No 20040210) 

主　　题：initial transient process helical flux compression generator diffusion equation skin depth 

摘      要：An analytical scheme on the initial transient process in a simple helical flux compression generator, which includes the distributions of both the magnetic field in the hollow of an armature and the conducting current density in the stator, is developed by means of a diffusion equation. A relationship between frequency of the conducting current, root of the characteristic function of Bessel equation and decay time in the armature is given. The skin depth in the helical stator is calculated and is compared with the approximate one which is widely used in the calculation of magnetic diffusion. Our analytical results are helpful to understanding the mechanism of the loss of magnetic flux in both the armature and stator and to suggesting an optimal design for improving performance of the helical flux compression generator.