Effects of nanosecond pulse voltage parameters on characteristics of surface charge for epoxy resin

Kong, Fei; Zhang, Shuai; Lin, Haofan; Ren, Chengyan; Zhang, Cheng; Shao, Tao

doi:10.1109/tdei.2017.007116

Cited by 23 publications

(8 citation statements)

References 55 publications

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“…If operated at a high frequency, the average power of the transistor should be lower than the rated power. According to the operation principle, the power through the transistor in the drive circuit is concentrated on the rising edge during the Miller plateau, so the average power P a should meet the requirement in formula (6).…”

Section: Transistor Selectionmentioning

confidence: 99%

“…NOWadays, pulse generators have been widely used in applications including food sterilisation [1], biomedicine [2], plasma physics [3,4], and industry [5]. The research shows that rise/ fall time of high-voltage pulses has a great influence on experimental results, such as the surface potential of material treatment [6], mean electron energy of plasma in parallel-plate capacitive coupled plasma source [7], and ionisation rate distribution in atmospheric pressure plasma jets [8]. In Dielectric Barrier Discharges (DBDs) and ozone generation experiments [9], the effects of pulse excitation with different pulse edges are other.…”

Section: Introductionmentioning

confidence: 99%

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A high‐voltage solid‐state Marx generator with adjustable pulse edges

et al. 2023

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Most reactors for non‐thermal plasma excitation are capacitive to pulse generators. The density and temperature of electrons in plasma are dominated by the discharging currents which are proportional to the pulse edges. However, adjusting the pulse edges is quite challenging since the switching speed and the inductance and capacitance in the discharging loops dominate them. This study proposes a drive circuit for solid‐state Marx generators with adjustable edges. The drive circuit controls the Miller plateau by adjusting the gate voltage amplitude to adjust both the rise time and fall time of pulses continuously and independently. The influence of the gate voltage on the Miller plateau and the rise time is studied. The feasibility is verified by both simulating and experimental results. An 8‐stage solid‐state Marx generator prototype was built, and 4.8‐kV pulses with a rise time in the range of 79 ns‐22.21 μs were obtained over capacitive loads. Adjusting pulse edges can control the current amplitudes in dielectric barrier discharge loads.

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Section: Transistor Selectionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A high‐voltage solid‐state Marx generator with adjustable pulse edges

et al. 2023

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“…Algorithms with the similar function have already been studied and employed in EP and EFM methods to inverse induced potential on insulation surface to charge density [29]. These algorithms have been reviewed [69] including linear method [70,71], analytical method [72], λ function method [73], Θ function method [74], and improved λ function method with reduced noise [75].…”

Section: Surface Charge Inversion Algorithmsmentioning

confidence: 99%

“…To the best of our knowledge, the Pockels effect, also known as linear electro-optic effect, is considered as the only feasible measurement technique for transient surface charge diagnosis so far [27]. Different from conductive metal needles suspended close to surface in off-line methods, which greatly disturb the distribution of original electric field and surface charge [28,29], dielectric electro-optic crystals with weak conductance are employed in the Pockels techniques, hiding under samples to avoid interference with electric field above. Usually, this noninvasive online measurement needs to cooperate with highspeed camera devices to acquire a higher temporal-spatial resolution [30].…”

Section: Introductionmentioning

confidence: 99%

Review of surface transient charge measurement on solid insulating materials via the Pockels technique

et al. 2021

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Surface charges accumulated on solid insulating materials in electrical apparatuses and electronic devices could distort the initial electric field and severely damage the insulation performance. Accurate transient surface charge measurement is critical to determine the mechanisms of charge transport and flashover occurrence, and estimate surface insulation strength under high voltage. The measurement technique based on the Pockels electro‐optic effect is considered as the only approach for 2‐D dynamic charge distribution behaviour so far, and it has good capability to avoid original electric field distortion caused by conventional methods featured by metal probes. This paper reviews recent progress of the non‐invasive dynamic surface charge measurement systems on the Pockels technique. We focus especially on typical systems with transmitting and reflecting configurations and the frequently used fast inversion algorithms. It can be inferred that higher spatial‐temporal resolution, higher signal‐to‐noise ratio, and better compatibility for both transparent and opaque materials are the future development trends, which greatly depend on multiple technological breakthroughs at impact‐resistant electro‐optic crystals, advanced high‐speed photography and high‐performance inversion algorithms. In addition, the recent studies on transient behaviour of surface discharge, together with the present limitation and future prospects are discussed. It is expected that more ideas will be inspired in transient surface charge measurement by the Pockels technique and other relevant electro‐optic methods.

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“…Coated polymers are widely used flexible electronics, [1,2] food packaging, [3,4] microelectronic encapsulation, [5,6] and dielectric materials. [7][8][9] As shown by Wang and colleagues, [1][2][3][4][5][6][7][8][9] SiO x are the preferred coating material due to their optical properties, low gas permeability, microwave inertness, and environmental benignancy. Two methods currently used to gain the SiO x layer are thermal oxidation and plasma-enhanced chemical vapor…”

Section: Introductionmentioning

confidence: 99%

Numerical modeling of gas‐phase reactions of tetraethoxysilane/O2/Ar atmospheric dielectric barrier discharge for deposition

Chang

Dai

Kong

et al. 2023

Plasma Processes & Polymers

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A chemical kinetic model is developed to study the decomposition of tetraethoxysilane (TEOS) in O2/Ar atmospheric pressure dielectric barrier discharge and compared with gas chromatography and optical emission spectroscopy results. The calculations indicate that the excited Ar dominates the fragmentation of TEOS in the absence of oxygen and mainly breaks the carbon–carbon bonds in TEOS. However, in the presence of oxygen, the primary decomposition process of TEOS is the substitution of ethoxy (–OC2H5) by hydroxyl (–OH). The variation of these two reactions with oxygen composition could explain the transition of the deposition layer from organic to norganic. The model and its results provide a theoretical basis for further modeling and regulating the quality of the deposition layer.

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Effects of nanosecond pulse voltage parameters on characteristics of surface charge for epoxy resin

Cited by 23 publications

References 55 publications

A high‐voltage solid‐state Marx generator with adjustable pulse edges

A high‐voltage solid‐state Marx generator with adjustable pulse edges

Review of surface transient charge measurement on solid insulating materials via the Pockels technique

Numerical modeling of gas‐phase reactions of tetraethoxysilane/O2/Ar atmospheric dielectric barrier discharge for deposition

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