Research of Driving Circuit in Coaxial Induction Coilgun
Abstract: Power supply is
crucial equipment in coaxial induction coil launcher. Configuration of the
driving circuit directly influences the efficiency of the coil launcher.This
paper gives a detailed analysis of the properties of the driving circuit
construction based on the capacitor source. Three topologies of the driving
circuit are compared including oscillation, crowbar and half-wave circuits. It
is proved that which circuit has the better efficiency depends on the detailed
parameters of the experiment, especially the crowbar resistance. Crowbar
resistor regulates not only efficiency of the system, but also temperature rise
of the coil. Electromagnetic force (EMF) applied on the armature will be
another problem which influences service condition of the driving circuits.
Oscillation and crowbar circuits should be applied to both of the synchronous
and asynchronous induction coil launchers, respectively. Half-wave circuit is
seldom used in the experiment. Although efficiency of the half-wave circuit is
very high, the speed of the armature is low. A simple independent half-wave
circuit is proposed in this paper. In general, the comprehensive property of
crowbar circuit is the most practical in the three typical circuits.
Conclusions of the paper could provide guidelines for practice.
Author: Yadong Zhang, Jiangjun
Ruan, Yuanchao Hu Yuanchao Hu, Ruohan Gong, Weijie Zhang, Kaipei Liu
Journal Code: jptkomputergg130067
