Nanosecond pulsed streamer discharges Part I: Generation, source-plasma interaction and energy-efficiency optimization

Huiskamp, T.

doi:10.1088/1361-6595/ab53c5

Cited by 61 publications

(47 citation statements)

References 177 publications

(313 reference statements)

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“…The plasma–source interaction affects the discharge mode transition, plasma properties, and energy transfer efficiency [116, 121]. Plasma properties could be different under the same voltage waveform while coupled with distinct generator topologies [121]. The suitable waveform for achieving uniform discharge needs to be further investigated (e.g.…”

Section: Challenges and Potential Approachesmentioning

confidence: 99%

Repetitively pulsed gas discharges: memory effect and discharge mode transition

Zhao

2020

High Voltage

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Repetitively pulsed gas volume and dielectric surface discharges have gained growing attention because of peculiar and exciting physics phenomena, high efficiency, high reactivity, and potential to obtain conventionally unachievable plasma properties. Nevertheless, incomplete understanding of fundamental mechanisms renders the repetitively pulsed discharge far less predictable and controllable, where the inherent memory effect and the discharge mode transition are universal challenges. In this topical review, the authors will explore the macroscopic characteristics of the gas gap breakdown and the surface flashover, state‐of‐the‐art mechanisms and dominant agents of discharge memory effects, operation regimes and transitions of the discharge mode, and how waveform parameters affect the pulsed discharge properties. Challenges and potential approaches for further understanding the memory effect and the discharge mode transition in the repetitively pulsed discharge are discussed.

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Section: Challenges and Potential Approachesmentioning

confidence: 99%

Repetitively pulsed gas discharges: memory effect and discharge mode transition

Zhao

2020

High Voltage

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“…In the MPC, the magnetic switch is the key component with which to determine the pulse shape [ 24 ]. A saturable inductor, in which there is an inductor wound on a magnetic core, is commonly used as a magnetic switch in an MPC circuit [ 25 ]. After the capacitor, C 0 , is charged to V C , a semiconductor switching device is switched on.…”

Section: Pulsed Power Generators For Food Processingmentioning

confidence: 99%

“…However, the output voltage is critically damped when using the pulsed power generator with a single capacitor and inductor. The output voltage waveforms can be changed from critically dumping (double-exponential-shaped) to square (constant in an arbitrary period) by pulsed power sources with multiple elements; such circuits are called pulse-forming networks (PFNs), whose transmission line (distributed constant circuit) is also used as pulse-forming lines (PFLs) [ 4 , 25 ].…”

Section: Pulsed Power Generators For Food Processingmentioning

confidence: 99%

Pulsed Power Applications for Protein Conformational Change and the Permeabilization of Agricultural Products

et al. 2021

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Pulsed electric fields (PEFs), which are generated by pulsed power technologies, are being tested for their applicability in food processing through protein conformational change and the poration of cell membranes. In this article, enzyme activity change and the permeabilization of agricultural products using pulsed power technologies are reviewed as novel, nonthermal food processes. Compact pulsed power systems have been developed with repetitive operation and moderate output power for application in food processing. Firstly, the compact pulsed power systems for the enzyme activity change and permeabilization are outlined. Exposure to electric fields affects hydrogen bonds in the secondary and tertiary structures of proteins; as a result, the protein conformation is induced to be changed. The conformational change induces an activity change in enzymes such as α-amylase and peroxidase. Secondly, the conformational change in proteins and the induced protein functional change are reviewed. The permeabilization of agricultural products is caused through the poration of cell membranes by applying PEFs produced by pulsed discharges. The permeabilization of cell membranes can be used for the extraction of nutrients and health-promoting agents such as polyphenols and vitamins. The electrical poration can also be used as a pre-treatment for food drying and blanching processes. Finally, the permeabilization of cell membranes and its applications in food processing are reviewed.

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“…There are some books and review papers about generation of pulsed power including nanosecond pulses (Martin 1992;Mankowski and Kristiansen 2000;Smith 2002;Mesyats 2007). Recently Akiyama (Akiyama and Heller 2017) in chapter 2, Huiskamp (Huiskamp 2020) for a detailed overview. Pulsed power applications for biology have been newly developed, in which both high repetition and performance are required by researchers and scientists because of optimizing to the load of living organisms (Akiyama and Heller 2017).…”

Section: Generation Of Pulsed Powermentioning

confidence: 99%

Pulsed power applications for agriculture and food processing

Takaki

Takahashi

Hayashi³

et al. 2021

Rev. Mod. Plasma Phys.

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Recently, pulsed power technologies, including pulsed electric fields (PEFs) and time-modulated plasmas, are starting to be applied actively in agriculture and food processing. In the applications, compact pulsed power generators with moderate peak power and repetitive operation are developed for controlling discharge plasmas and electric field distribution. These applications are mainly based on the biological effects of a spatially distributed electric field and the chemically active species in the plasma. The PEFs are caused by applying pulse voltage between the electrodes and contribute to form pores on the cell membrane or to change conformation of protein. When the applied voltage exceeds the discharge onset criterion, plasmas are generated through the avalanche process of electron accelerated with intense electric field in a gas or liquids medium. The plasmas produce chemically active species, UV radiation, an intense electric field in the vicinity of discharge channel and shock waves, which also have different biological effects. The agricultural applications of pulsed power can be categorized as two phases: pre-harvest and post-harvest phases. The pre-harvest phase consists of seed germination, seedling growth, plant growth and growth mode change from vegetative to reproductive. Pulsed power technologies are used to promotion of seed germination, plant growth enhancement through direct stimulation or indirect effect such as inactivation of bacteria in soil and liquid hydroponic media, and promotion of mushroom fruit body formation. The post-harvest phase consists of harvesting the agricultural produce, storing the products, transporting the products to consumers and food processing such as drying, pasteurization (sterilization of bacteria), permeabilization and fermentation. The pulsed power technologies are also used to keep freshness of agricultural produce through decontaminating airborne, inactivating bacteria and decomposition of plant hormone in the storage containers. The poration of cell membrane by PEF contributes improvement of extraction of juice, nutritional agents, and antioxidant metabolites such as polyphenols from agricultural products. In this review, at first, a basis of pulsed power system for agricultural applications and bio-effect by high-electric field exposure is outlined. After that, pre-harvest and post-harvest agricultural applications are described. The utilization of pulsed power technologies to contribute efficient food processing and improve food safety and quality is also described.

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Nanosecond pulsed streamer discharges Part I: Generation, source-plasma interaction and energy-efficiency optimization

Cited by 61 publications

References 177 publications

Repetitively pulsed gas discharges: memory effect and discharge mode transition

Repetitively pulsed gas discharges: memory effect and discharge mode transition

Pulsed Power Applications for Protein Conformational Change and the Permeabilization of Agricultural Products

Pulsed power applications for agriculture and food processing

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