A high-voltage pulse generator for electric-discharge technologies

Kanaeva, G. G.; Kukhtab, V. R.; Lopatinc, V. V.; Nashilevskiic, A. V.; Remnevc, G. E.; Uemurab, K.; Фурман, Э. Г.

doi:10.1134/s002044121001015x

Cited by 14 publications

(3 citation statements)

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“…The efficiency of technological generators is determined by the ratio of the active component of the internal resistance of the generator to the resistance from the load. From this point of view, a generator with a pulse transformer [8,10,18,19] may in many cases turn out to be preferable to a Marx generator. The circuit of such type of a generator is based on pulsed charging of a high-voltage capacitive storage from a primary low-voltage capacitive storage through a step-up pulse transformer, and subsequent switching of the high-voltage storage using a gas switch to a load.…”

Section: Jinst 16 P12006mentioning

confidence: 99%

An air insulated linear pulse transformer for electrodischarge technology

2021

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A linear pulse transformer with air insulation at atmospheric pressure was created and tested under both constant resistance and non linear loads. The maximum power of the transformer output pulse reached ∼500 MW at a matched load with a charge voltage 50 kV. The transformer transferred ∼60% of the stored energy to the load over a characteristic time of about 1 μs. The scalability the generator was studied by connecting two identical transformers in series which gave a power output of ∼850 MW with doubled output voltage and reduced current. The frequency mode of operation was studied using one and two transformers with a charge voltage of 50 kV and a load that was, close to matched. In both cases, the power maximum and jitter showed no significant changes at any of the frequencies tested (up to 5 Hz). These results mean that the use of this generator can be recommended for a wide field of applications due to its scalability and low internal impedance.

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Section: Jinst 16 P12006mentioning

confidence: 99%

An air insulated linear pulse transformer for electrodischarge technology

2021

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“…In the experiment of high-voltage electric pulse to air discharge, a large plasma device explored the relationship between the formation of plasma channel and pressure gradient, and the change process of the relevant electric parameters was derived [32]. In addition, high pulse voltage [33], discharge energy [34,35], rock porosity, and fissures [36] will affect the formation of plasma channels. Moreover, it has been shown that the rational design of electrode drills is a prerequisite for rock fragmentation and current injection of plasma channels [37].…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical simulation research on shock wave rock-breaking by high voltage electric pulse

Liu,

Zhou,

Zhu

2024

Phys. Scr.

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High-voltage electric pulse(HVEP) drilling technology has the advantages of high rock-breaking efficiency, green and non-polluting. Aiming at the importance of HVEP drilling technology in generating plasma channels, plasma shock waves, and rock-breaking pits, this paper carries out multi-physics field numerical simulations and indoor electric pulse breakdown experiments. This paper first constructs a two-dimensional numerical model of rock electric breakdown. The simulation of HVEP rock breaking, plasma channel and plasma shock wave is realized from the five-field coupling and combined with the wave control equations. The effects of different electrode shapes on the plasma channel, breakdown channel and shock wave are analyzed. Then, this paper designed an indoor HVEP rock-breaking experiment to investigate the influence of different electrode shapes on rock breakdown and plasma shock waves. The simulation and experimental results show that the indoor electric pulse breakdown experiment results are consistent with the simulation results; The plasma channels are formed by the ‘electrical damage’ through each other, and the secondary plasma channel is often generated inside the rock. The generation of the secondary plasma channel means that the rock fragmentation depth and the fragmentation area will be increased; The larger the contact area of the electrode bit with the rock, the larger the radius (volume) of the plasma channel and the smaller the amplitude of the plasma shock wave; The quadrangular electrode bits have the best rock-breaking effect and are recommended; The conical electrode bit has the most excellent dispersion in the statistical analysis of the electric pulse rock-breaking effect, and the stability of the rock-breaking effect is poor, so it is recommended to use it together with the composite drill bit; The cylindrical electrode bit has the best aggregation degree of electric pulse rock-breaking and the most stable rock-breaking effect.

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“…There has been an issue of interest for the last several decades in the use of high voltage (HV) pulse technology for rocks disintegration, because the electrical disintegration of rock through application of high voltage electrical pulses is one of the effective techniques in disintegration of mineral aggregates [1][2][3][4]. The experimental and theoretical studies on the applications of this technology were summarized by Semkin et al [5,6] for the time period of over 30 years.…”

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confidence: 99%

High-voltage pulsed generators for electro-discharge technologies

et al. 2013

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A high-voltage pulse technology is one of effective techniques for the disintegration and milling of rocks, separation of ores and synthesized materials, recycling of building and elastoplastic materials. We present here the design and test results of two portable HV pulsed generators, designed for materials fragmentation, though some other technological applications are possible as well. Generator #1 consists of low voltage block, high voltage transformer, high voltage capacitive storage block, two electrode gas switch, fragmentation chamber and control system block. Technical characteristics of the #1 generator: stored energy in HV capacitors can be varied from 50 to 1000 J, output voltage up to 300 kV, voltage rise time ∼ 50 ns, typical operation regime 1000 pulses bursts with a repetitive rate up to 10 Hz.Generator #2 is made on an eight stages Marx scheme with two capacitors (100 kV–400 nF) per stage, connected in parallel. Two electrode spark gap switches, operated in atmospheric air, are used in the Marx generator. Parameters of the generator: stored energy in capacitors 2÷8 kJ, amplitude of the output voltage 200÷400 kV, voltage rise time on a load 50÷100 ns, repetitive rate up to 0.5 Hz. The fragmentation process can be controlled within a wide range of parameters for both generators.

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A high-voltage pulse generator for electric-discharge technologies

Cited by 14 publications

References 0 publications

An air insulated linear pulse transformer for electrodischarge technology

An air insulated linear pulse transformer for electrodischarge technology

Experimental and numerical simulation research on shock wave rock-breaking by high voltage electric pulse

High-voltage pulsed generators for electro-discharge technologies

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