High voltage pulses for high impedance loads using explosive formed fuses

Degnan, J.H.; Kiuttu, G.F.; Turchi, P. J.; Graham, J.D.; Goforth, J.H.; Oona, H.; Tasker, D.G.

doi:10.1109/27.736034

Cited by 2 publications

(2 citation statements)

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“…• systems based on a rapid interruption of the current flowing through inductance by electro-exploding forming fuses [24,28,29], explosive fuses [30][31][32] or superconducting switches [33,34].…”

Section: Introductionmentioning

confidence: 99%

“…Fuses [30] which use high explosives to limit a current, the detonation of which interrupt (directly or indirectly) the continuity of the conductor also do not achieve satisfactorily short working times. The factor limiting their effectiveness is the maximum velocity of the detonation wave of the available explosives, which reaches the value of approx.…”

Section: Introductionmentioning

confidence: 99%

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Compact and Integrated High-Power Pulse Generation and Forming System

et al. 2021

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This paper presents comprehensive analytical, numerical and experimental research of the compact and integrated high-power pulse generation and forming system based on the flux compression generator and the electro-explosive forming fuse. The paper includes the analysis of the presented solution, starting from the individual components studies, i.e., the separate flux compression generator tests in field conditions and the forming fuse laboratory test, through the formulation of the extended quasi-empirical components models aimed at enabling their optimal parameters determination at the early design stage and ending with the description of the integrated system studies in field conditions. Based on detailed research, it was possible to achieve very high parameters of the generated pulses, i.e., overvoltages of up to 340 kV with the available source power reaching 25 GW. A very high convergence of the simulation and the results of experimental research has been obtained. The parameters of the presented system have been compared with other literature solutions and the selected topology of the high power pulse generation and forming system has been distinguished against other available ones, e.g., based on Marx generators and forming lines.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Compact and Integrated High-Power Pulse Generation and Forming System

et al. 2021

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Analysis of explosively formed fuse experiments

Goforth

Oona

Tasker

et al.

Digest of Technical Papers. PPC-2003. 14th IEEE International Pulsed Power Conference (IEEE Cat. No.03CH37472)

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Explosively formed fuse (EFF) opening switches have been used in a variety of applications to divert current in high explosive pulsed power (HEPP) experiments. Typically, EFF's operate at 0.1 -0.2 W ( c m switch width), and have an -2 ps risetime to a resistance of 10's -100's mR. We have demonstrated voltage standoff of -7KV/(die pattem) in some configurations, and typical switches have up to 100 die patterns. In these operating regimes, we can divert large currents (10-20 MA) to low impedance loads, and produce voltage waveforms with risetime and shape determined by the shape of the resistance curve and amount of magnetic flux in the circuit. Progress in quantitatively modeling EFF performance with magnetohydrodynamic (MHD) codes has been slow, and much of our understanding regarding the operating principles of EFF switches still comes from small-scale experiments coupled with hydrodynamic (hydro) calculations. These experiments are typically conducted at currents of -0.5 MA in a conductor 6.4 cm wide. A plane-wave detonation system is used to drive the EFF conductor into the forming die, and current and voltage are recorded. The resulting resistance profiles are compared to the hydro calculations to get insight into the operating mechanisms. Our original goals for EFF development were limited in scope, and in pursuing specific large systems, we have left behind a valuable body of small-scale test data that has been largely unused.

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High voltage pulses for high impedance loads using explosive formed fuses

Cited by 2 publications

References 6 publications

Compact and Integrated High-Power Pulse Generation and Forming System

Compact and Integrated High-Power Pulse Generation and Forming System

Analysis of explosively formed fuse experiments

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