Parameter Analysis and Optimized Configuration of the PFU for Inductive Storage Systems

Abstract

Paralleled pulse-forming units (PFUs) with different triggering delays might be a paramagnetic way for generating flat-topped current wave for electromagnetic launch. Many researchers have reported that multiple capacitive storage PFUs were implemented such current waves in laboratories. However, due to its low energy density, the applications of the capacitive pulsed-power supplies are limited. Since the inductor has advantages in energy density, the inductor pulsed-power supply becomes one of the hottest topics recently. The slow transfer of energy through capacitive hybrid meat grinder with inverse current commutation with semiconductor devices proposed by Tsinghua University has demonstrated its advantage and applicability recently. Using this kind of topology, this paper proposes the design of an inductive storage PFU with a stored energy of 100-kJ. The maximum load current reaches to 50 kA and its pulsewidth is at least 5 ms. The optimized inductive storage PFU shows superiority in contrast to the capacitive storage PFU with the same energy. This paper offers the theoretical analysis and the testing foundation for investigating the inductor pulsed-power supply with higher energy.Index Terms-Inductive pulsed-power supplies, inverse current commutation with semiconductor devices (ICCOS), pulse-forming unit (PFU), slow transfer of energy through capacitive hybrid (STRETCH) meat grinder.

A New Modular XRAM-Like Inductive High- Current Pulse Generator Circuit Topology

“…The proposed current pulse generator circuit can also be compared with the other three existing topologies that were presented in [5], [8], and [13]. In these circuits multi-module inductors are used for energy storage and the generation of higher current pulses.…”

“…Their current amplification factor is relatively small. The circuit in [13] is an improved STRETCH meat grinder circuit. The circuits in [8] and [13] use thyristors as the opening switches.…”

“…The circuit in [13] is an improved STRETCH meat grinder circuit. The circuits in [8] and [13] use thyristors as the opening switches. In order to turn off these thyristors, each thyristor must be equipped with a capacitor with a pre-charge voltage.…”

Performance Analysis of Reluctance Coil Launchers Driven by Distributed Feeder Circuit

“…The power supply circuit consists of multi-stage energy storage capacitors and inductors, and the role of inductors includes current limiting, isolating each discharge unit, regulating pulse width and intermediate energy storage, etc. [27], [28]. Its various stages of pulse discharge units are triggered in time sequence to form a flat-topped pulsed excitation current to drive the armature.…”