Energy measurement of spark discharge using different triggering methods and inductance loads

Zhong, Shengjun; Nan, Miao; Yu, Qingbo; Cao, Weiguo

doi:10.1016/j.elstat.2014.10.014

Cited by 13 publications

(5 citation statements)

References 9 publications

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“…Two voltage peaks were observed, which is typical in specific conditions and was described in the literature, e.g. [4]. The first peak was observed approximately 40 ns after the initiation of the experiment, while the rising time was app.…”

Section: Course Of Spark Dischargesupporting

confidence: 70%

“…(1) However, not whole energy stored within the circuit of the spark generator will be released during ESD [3][4]. In test conditions, the most reliable way is to determine both voltage u and current i over time and to integrate the results:…”

Section: Typical Industrial Hazardsmentioning

confidence: 99%

“…It is well described in the literature, that not all energy stored in the circuit capacitance is released in the form of spark discharge. Some of the energy is transferred into heat on the circuit resistance, usually constituting at least 10% of the whole energy stored in the circuit prior to the discharge [3] but may reach much higher values, reaching up to 60% in some conditions [4], typically in the circuits with high inductance.…”

Section: Course Of Spark Dischargementioning

confidence: 99%

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Feasibility study on the use of fast camera and recording in time-domain to characterize ESD

2018

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Fire and explosion protection in industrial conditions requires multidimensional approach. Usually the risk of hazardous zone creation is unavoidable, if the combustible material is processed. Therefore controlling of potential ignition sources is introduced. One of most popular sources of ignition is electrostatic discharge. Depending on the type of the discharge, as well as on exact discharge conditions, energy released might reach hundreds or even thousands of mJ, being able to ignite most of gaseous or dust-air hazardous mixtures. A dedicated methodology was created to record the discharge with fast camera with maximum speed of 1M fps and with the oscilloscope up to 25 GS/s. Dedicated test stand allows to obtain high voltage to create the conditions for electrostatic discharge. The aim of presented research was to analyze the course of electrostatic spark discharge in laboratory conditions and to place the outcomes in the context of explosion safety in the industrial conditions. The course of electrostatic discharge is dependent on various conditions: the polarity, distance between the electrodes, shape of electrodes, grounding conditions, etc. Understanding of the phenomenon is crucial from the point of view of explosion safety.

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Section: Course Of Spark Dischargesupporting

confidence: 70%

Section: Typical Industrial Hazardsmentioning

confidence: 99%

Section: Course Of Spark Dischargementioning

confidence: 99%

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Feasibility study on the use of fast camera and recording in time-domain to characterize ESD

2018

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“…In the current research the MIE was tested by a 3 standard apparatus referred to the relative standards [16][17][18][19]. The test chamber was a 1.2L glass Hartman tube, and the spark generator was basically identical with the one described by Zhong et al [20]. The electric spark was triggered by the movement of an electrode and the inductance of the circuit was 1.47mH.…”

Section: Apparatus and Test Proceduresmentioning

confidence: 99%

Ignition characteristics of metal dusts generated during machining operations in the presence of calcium carbonate

Nan

Zhong

2016

Journal of Loss Prevention in the Process Industries

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“…The authors of previous studies [5][6][7][8] conducted such measurements by means of standard high-voltage probes for oscillographs. In this method of measurement, both the inductive component of the voltage drop in the high-current circuit, which exceeds many times over the active potential drop in the gap, and the induction noise fed to the measuring circuit are high.…”

mentioning

confidence: 99%

A Technique for Measurements of Energy Release in Pulsed Gas Discharge in Short Interelectrode Gaps

et al. 2016

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A technique based on measurement of the active voltage in a low-inductance section of a discharge circuit with two interelectrode gaps in a three-gap gas discharge generator of aerosol is developed for use in determining energy release in a pulsed gas discharge in short interelectrode gaps. It is shown that the effi ciency of energy release increases as the number of serially connected electrodes is increased. Keywords: pulsed gas discharge, energy release, short interelectrode gas, cathode potential drop.The widespread use of the phenomenon of pulsed gas discharge requires a determination and optimization of the released energy. This is especially crucial when creating light-emitting devices, equipment for electro-erosion treatment, switches of high electrical power, and charged particle accelerators in which energy consumption is one of the basic characteristics of the entire device. The class of electrophysical devices with pulsed gas discharge includes high-pressure fl ash lamps, different types of high-current accelerators of electrons and ions with plasma cathodes, pulsed plasma generators, gas-discharge switches, electrical spark alloying devices, sparks of fuel ignition systems and gas-discharge generators of nanodimensional aerosols [1][2][3].In pulsed gas-discharge generators of aerosols, fl uxes of nanoparticles are formed by electrical erosion of the electrodes of a discharge gap accompanied by the formation of vapor-droplet dispersion and subsequent condensation in a process of rapid cooling. In such devices, a portion of the energy released in a narrow cathode layer (10 −2 mm) characterized by a drop in potential is expended on the generation of nanoparticles, while the energy of the plasma column of the pulsed discharge is consumed basically in heating and radiation. To minimize purposeless utilization of the energy released in an interelectrode gap, therefore, the distance between the electrodes is selected in the range 0.5-2 mm. In such devices, the large pulse current created by the discharge of a reservoir capacitor has the form of damped vibrations, since as a rule the critical resistance of the circuit signifi cantly exceeds the equivalent resistance. The following question is very critical: what fraction of the released electrical energy is consumed directly in the transformation of the material of the electrode from the solid phase into nanoparticles. In order to obtain such data, a technique is needed for measurements of energy release in a pulsed gas discharge in a small interelectrode gap. The technique must include an algorithm for generating primary data on the pulse current through a discharge gap and the active drop in potential in the gap as a function of time. The Joule integral of energy release is calculated on the basis of the obtained results. Such a problem has been successfully solved for short discharge gaps with stationary arc where reliable measurement of the pulse voltage between the electrodes represents a special diffi culty [4].

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Energy measurement of spark discharge using different triggering methods and inductance loads

Cited by 13 publications

References 9 publications

Feasibility study on the use of fast camera and recording in time-domain to characterize ESD

Feasibility study on the use of fast camera and recording in time-domain to characterize ESD

Ignition characteristics of metal dusts generated during machining operations in the presence of calcium carbonate

A Technique for Measurements of Energy Release in Pulsed Gas Discharge in Short Interelectrode Gaps

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