Magnetic Coupling Resonant-Based Air-Isolated Module for High Voltage Pulse Generators

Wu, Feiyu; Zhao, Lisheng; Dong, Shoulong; Zhou, Xiaoshu; Zeng, Weirong; Yao, Chenguo; Yu, Liang

doi:10.1109/tie.2022.3165285

Cited by 6 publications

(2 citation statements)

References 23 publications

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“…This insulation distance was a small safe distance to prevent the liquid film from being broken down by the honeycomb electrode according to experience. The discharge was motivated by the high voltage nanosecondpulse generator described in our previous work [35]. Table 1 shows the setting of discharge parameters and liquid film curing time in the pre-experiments.…”

Section: Preparation Of All-organic Modification Coatingmentioning

confidence: 99%

All-organic modification coating prepared with large-scale atmospheric-pressure plasma for mitigating surface charge accumulation

Zhang

et al. 2023

Plasma Sci. Technol.

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The surface charge accumulation on polymers often leads to surface flashover. Current solutions are mainly based on the introduction of inorganic fillers. The high-cost process and low compatibility remain formidable challenges. Moreover, existing researches on all-organic insulation focus on capturing electrons, contrary to alleviating charge accumulation. Here, an all-organic modification coating was prepared on polystyrene (PS) with the large-scale atmospheric-pressure plasma, which exhibits outperformed function in mitigating surface charge accumulation. The surface charge dissipation rate and surface conductivity are promoted by about 1.37 and 9.45 times, respectively. Simulation and experimental results show that this all-organic modification coating has a smaller electron affinity potential compared with PS. The decrease of electron affinity potential may result in accelerated surface charge decay of PS, which has never been involved in previous works. Moreover, this coating also has good reliability in a repeated surface flashover. This facile and large-scale approach brings up a novel idea for surface charge regulation and the manufacture of advanced dielectric polymers.

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Section: Preparation Of All-organic Modification Coatingmentioning

confidence: 99%

All-organic modification coating prepared with large-scale atmospheric-pressure plasma for mitigating surface charge accumulation

Zhang

et al. 2023

Plasma Sci. Technol.

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“…Each optical fiber receiver and driver chip needs an isolated DC voltage of several to tens of volts to function properly. At present, commercially isolated DC-DC [15] converters, high-frequency isolation [16] transformers diode strings [28] and air-isolation modules [29] are the main isolated power supply methods. Miniaturization is the prevailing development trend of pulse generators [30] but numerous trigger optical fibers dispersed in space and the requisite isolated power supply impair space utilization and impede system integration, and fiber optic transceivers are more expensive [9,15,[17][18][19].…”

Section: Introductionmentioning

confidence: 99%

A Flexible Solid-State Marx Modulator Module Based on Discrete Magnetic Coupling Drivers

Chen,

Zhu,

Zheng

et al. 2023

Electronics

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With the increasing and deepening application of high-voltage nanosecond solid-state pulse generators in biological, industrial, and environmental fields, the development of existing pulse generators faces many challenges, such as fixed pulse shapes, the usage of isolated driver power supplies, lower power density, and limited output electrical performance. Hence, a novel high-frequency multilevel nanosecond modular solid-state Marx modulator (SSMM) based on discrete magnetic coupling gate drivers is proposed. The gate voltage of the two MOSFETs can be rapidly synchronized at a high repetition frequency to achieve an amplitude-controlled gate voltage within 100 ns. The feasibility of the driver was verified by PSpice simulation and prototype testing. Moreover, a stackable SSMM module (S2M3) structure is proposed to solve the problem of common-mode interference conducted through the driver, which improves the reusability, scalability, and redundancy of modulators. The characteristic parameters of the developed 14-stage S2M3 are as follows: an output voltage amplitude of 5.45 kV with a 100 ns–50 ms width, a minimum rise time of approximately 18 ns, and a continuous repetition frequency of 100 kHz. S2M3 has the ability to change the pulse shape, and the pulse frequency can reach 2.8 MHz within the burst.

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A new optimization strategy, the influence of hollow electrode chamfers on the development of helium atmospheric pressure plasma jets

Wang,

Chen,

Yao

et al. 2024

Journal of Applied Physics

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This work suggests applying chamfering treatment to the plasma generator of the empty electrode structure. Enhancing the electrodes’ physical structure can significantly improve plasma characteristics without requiring intricate control systems. Experiments have shown that changes in the electrode’s shape can lead to changes in the formation of the atmospheric pressure plasma jet. Specifically, our observations indicate that an increase in the chamfer radius leads to an increase in the ignition voltage and a greater density of reactive species inside the jet. We developed a multi-channel equivalent circuit model to describe the discharge process of a plasma jet. Then, using the mixed layer theory, we investigated the effect of the chamfer radius on the plasma jet. Our findings suggest that chamfering increases the effective discharge area, resulting in more discharge channels in the model. This leads to a higher density of reactive species. Additionally, chamfering improves the mixing of helium and air, increasing the concentration of N2 and O2. This consumes some of the avalanche electrons and raises the ignition voltages, ultimately enhancing the chemical reactivity of the plasma jet. This work provides new ideas for the optimization strategy of atmospheric pressure plasma radiation devices.

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Magnetic Coupling Resonant-Based Air-Isolated Module for High Voltage Pulse Generators

Cited by 6 publications

References 23 publications

All-organic modification coating prepared with large-scale atmospheric-pressure plasma for mitigating surface charge accumulation

All-organic modification coating prepared with large-scale atmospheric-pressure plasma for mitigating surface charge accumulation

A Flexible Solid-State Marx Modulator Module Based on Discrete Magnetic Coupling Drivers

A new optimization strategy, the influence of hollow electrode chamfers on the development of helium atmospheric pressure plasma jets

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