The structural parameters directly affect the energy density and the total resistance of the inductors used in the inductive pulse power supply (IPPS). In this paper, we expound the relationship between the structural parameters and electrical performances of the inductors used in IPPS, and introduce the implementation of the inductors for the experiment in Slow TRansfer of Energy Through Capacitive Hybrid (STRETCH) meat grinder circuit using Air-core Flat Spirals of Strip Coil (AFSSC). Then, we work out a program which can obtain the optimal structural parameters of the inductors with the highest energy density under the condition of providing the charging and discharging current as well as the inductance in the primary and the secondary side. The correctness of the program is verified by the measured values of the real inductors. At the end, on the condition of constant current density, we put forward a rule that along with the increase of system energy, the energy density became higher and the resistance of the inductors became lower.

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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.

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