Pulse generator based on an inductive energy storage and a ferromagnetic opening switch with a resistive load

Abstract

Commutation of high energy stored in inductive energy storage system is a difficult task due to absence of reliable indestructible high power opening switches [Yu.N. Botcharov et al., June 1999; C.H. Stallings et al., June 2001; Yu. E. Adamyana et al., June 2001; G.H. Rim et al., July 7-14 2002]. This circumstance provokes research on various types of opening switches. This study presents some experimental results with a ferromagnetic opening switch (FOS), that consists of a toroidal ferromagnetic core and two orthogonal windings: One winding winds the outside of the core creating toroidal component B/sub /spl theta// of magnetic induction in the core. And the other is located inside the core generating poloidal component ?/sub /spl phi// in the core. Simultaneous presence of both magnetic components that are orthogonal demagnetizes the core fast and resulting in abrupt inductance increase, which is equivalent to an opening pulse-switch. Using a laboratory experimental set-up the possibility of FOS based on the idea is experimentally verified on a resistive load.