Numerical Simulation of Trichel Pulses in a Negative Corona Discharge in Air

Sattari, Paria; Castle, G.S.P.; Adamiak, K.

doi:10.1109/tia.2011.2156752

Cited by 72 publications

(49 citation statements)

References 15 publications

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“…It is seen that the frequency increases linearly with the average current and ranges from 1 kHz to about 1 MHz. This is similar to the previous results [8][9][10][11][12][13]. The air pressure also has significant effect on the repetition frequency when the averaged current is the same.…”

Section: Trichel Pulsesupporting

confidence: 92%

Trichel Pulse in Negative DC Corona discharge and Its Electromagnetic Radiations

Zhang¹,

Liu²,

Miao³

et al. 2015

Journal of Electrical Engineering and Technology

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-We investigate in this paper the radiated electromagnetic waves together with the discharge characteristics of Trichel pulse of negative DC corona discharge in air in pin-to-plate and wire-to-plate configurations. The feature of the current pulse and the frequency spectrum of the electromagnetic radiations were measured under various pressures and gas gaps. The results show that the repetition frequency and the amplitude of Trichel pulse current depend on the discharge conditions, but the rising time of the pulse relates only to the radius of needle or wire and keeps constant even if the other conditions (including the discharge current, the gas gap and the gas pressure) change. There exists the characterized spectrum of electromagnetic waves from negative corona discharge in Trichel pulse regime. These characterized radiations do not change their frequency at a given cathode geometry even if the averaged current, the gas gap or the air pressure changes, but the amplitude of radiations changes accordingly. The characterized electromagnetic radiations from Trichel pulse corona relate to the formation or the rising edge of current pulse. It confirms that the characterized radiations from Trichel pulse supply information of discharge system and provide a potential method for detecting charged targets.

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Section: Trichel Pulsesupporting

confidence: 92%

Trichel Pulse in Negative DC Corona discharge and Its Electromagnetic Radiations

Zhang¹,

Liu²,

Miao³

et al. 2015

Journal of Electrical Engineering and Technology

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“…3. The amplitude of the first pulses is much larger than the rest of the pulses which agrees with previous literature [12]. The first few pulses are produced in a charge-free space.…”

Section: Trichel Pulsesupporting

confidence: 90%

“…N p =0 on the ground plate N n =0 on the corona electrode For electrons, the secondary emission considered to update the electron density on corona electrode is (12) where N ec and N pc are the densities of electrons and positive ions on the corona electrode, and γ is the secondary electron emission coefficient, which is 0.01.…”

Section: Boundary Conditionmentioning

confidence: 99%

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Space and Time Domain Finite Volume Method for Numerical Simulation of Negative Corona Discharge in Air

Wang¹

2016

Journal of Electrical Engineering and Technology

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-In this paper, a space and time domain finite volume method is proposed to study the characteristics of space charges on a bar-to-plate geometry. Three ionic species, namely, positive ions, negative ions, and electrons, are considered. A finite element method is used to solve Poisson's equation, and a finite volume method is used to solve charge transport equation. Different time steps based on space domain and time domain are applied to improve computational efficiency when solving the charge transport equation. Four points are marked to indicate the characteristics of a Trichel pulse. Density distributions of three ionic species and electrical field strength along the axis are presented. Trichel pulses on a bar-to-plate geometry are simulated and compared with the experimental results. Good agreements are obtained, thereby confirming the validity of the proposed method.

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“…A conclusion was concluded that the pulse frequency increases with the applied voltage. 9,10 Few works have been done with considering photoionization in simulations and studies. It has been proved that photoionization has significant effect on the formation of the plasma.…”

Section: Introductionmentioning

confidence: 99%

Ion-impact secondary emission in negative corona with photoionization

Sun

2017

AIP Advances

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A corona discharge measurement system and simulation model are presented to investigate the effects of photoionization and ion-impact secondary emission process in negative corona discharge. The simulation results obtained is shown good agreement with experimental observations. Distribution of electron density along the symmetry axis at three critical moments is shown and the role of photoionization in negative corona discharge is clearly explained. Moreover, the current pulses are also presented under different secondary emission coefficients and the effect of the secondary emission coefficient is discussed.

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Numerical Simulation of Trichel Pulses in a Negative Corona Discharge in Air

Cited by 72 publications

References 15 publications

Trichel Pulse in Negative DC Corona discharge and Its Electromagnetic Radiations

Trichel Pulse in Negative DC Corona discharge and Its Electromagnetic Radiations

Space and Time Domain Finite Volume Method for Numerical Simulation of Negative Corona Discharge in Air

Ion-impact secondary emission in negative corona with photoionization

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