High-voltage pulsed generator for dynamic fragmentation of rocks

B. M. Kovalchuk, A. V. Kharlov, V. A. Vizir, V. V. Kumpyak, V. B. Zorin, V. N. Kiselev

    Research output: Contribution to journalArticle

    31 Citations (Scopus)

    Abstract

    A portable high-voltage (HV) pulsed generator has been designed for rock fragmentation experiments. The generator can be used also for other technological applications. The installation consists of low voltage block, HV block, coaxial transmission line, fragmentation chamber, and control system block. Low voltage block of the generator, consisting of a primary capacitor bank (300 μF) and a thyristor switch, stores pulse energy and transfers it to the HV block. The primary capacitor bank stores energy of 600 J at the maximum charging voltage of 2 kV. HV block includes HV pulsed step up transformer, HV capacitive storage, and two electrode gas switch. The following technical parameters of the generator were achieved: output voltage up to 300 kV, voltage rise time of ∼50 ns, current amplitude of ∼6 kA with the 40 ω active load, and ∼20 kA in a rock fragmentation regime (with discharge in a rock-water mixture). Typical operation regime is a burst of 1000 pulses with a frequency of 10 Hz. The operation process can be controlled within a wide range of parameters. The entire installation (generator, transmission line, treatment chamber, and measuring probes) is designed like a continuous Faraday's cage (complete shielding) to exclude external electromagnetic perturbations.

    Original languageEnglish
    Article number103506
    JournalReview of Scientific Instruments
    Volume81
    Issue number10
    DOIs
    Publication statusPublished - Oct 2010

    Fingerprint

    high voltages
    fragmentation
    generators
    Rocks
    rocks
    Electric potential
    low voltage
    transmission lines
    installing
    capacitors
    electric potential
    switches
    chambers
    thyristors
    pulses
    transformers
    Electric lines
    shielding
    charging
    Capacitors

    ASJC Scopus subject areas

    • Instrumentation

    Cite this

    Kovalchuk, B. M., Kharlov, A. V., Vizir, V. A., Kumpyak, V. V., Zorin, V. B., & Kiselev, V. N. (2010). High-voltage pulsed generator for dynamic fragmentation of rocks. Review of Scientific Instruments, 81(10), [103506]. https://doi.org/10.1063/1.3497307

    High-voltage pulsed generator for dynamic fragmentation of rocks. / Kovalchuk, B. M.; Kharlov, A. V.; Vizir, V. A.; Kumpyak, V. V.; Zorin, V. B.; Kiselev, V. N.

    In: Review of Scientific Instruments, Vol. 81, No. 10, 103506, 10.2010.

    Research output: Contribution to journalArticle

    Kovalchuk, BM, Kharlov, AV, Vizir, VA, Kumpyak, VV, Zorin, VB & Kiselev, VN 2010, 'High-voltage pulsed generator for dynamic fragmentation of rocks', Review of Scientific Instruments, vol. 81, no. 10, 103506. https://doi.org/10.1063/1.3497307
    Kovalchuk BM, Kharlov AV, Vizir VA, Kumpyak VV, Zorin VB, Kiselev VN. High-voltage pulsed generator for dynamic fragmentation of rocks. Review of Scientific Instruments. 2010 Oct;81(10). 103506. https://doi.org/10.1063/1.3497307
    Kovalchuk, B. M. ; Kharlov, A. V. ; Vizir, V. A. ; Kumpyak, V. V. ; Zorin, V. B. ; Kiselev, V. N. / High-voltage pulsed generator for dynamic fragmentation of rocks. In: Review of Scientific Instruments. 2010 ; Vol. 81, No. 10.
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