Ozone Generation with a Flexible Solid-State Marx Generator

Huiskamp, T.; Oorschot, J. J. van; Pereira, M. T.; Redondo, L. M.

doi:10.1109/ipmhvc.2018.8936658

Cited by 7 publications

(6 citation statements)

References 7 publications

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“…In general, the ozone we achieve in our system are around g kWh −1 , which is more than twice as as with our faster subnanosecond pulse and similar to the ozone yield in experiments we did with a DBD reactor and a regular solid-state Marx generator [80]. Therefore, there still significant room for improvement with our solid-state IMG system, which will have to come from shorter pulses and faster-rise time pulses.…”

Section: Final Thoughts On System Optimizationsupporting

confidence: 64%

Effective streamer discharge control by tailored nanosecond-pulsed high-voltage waveforms

Huiskamp

Ton

Azizi

et al. 2021

J. Phys. D: Appl. Phys.

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In this paper we present our solid-state nanosecond pulse source (the solid-state impedance-matched Marx generator) which can generate arbitrary waveforms and which can be used for pulsed discharge generation. The purpose of the development of such a generator is twofold: by being able to change the waveform at will, we aim to control the discharge generated by such pulses very precisely which can be very useful for plasma applications, but also for more fundamental studies. In the presented study, we applied the arbitrary-waveform pulse source for streamer discharge generation in a cylinder-wire-like arrangement and used the arbitrary-waveform capability to change the rise time (in our experiments we used 6.8-26.2 ns) of unipolar positive pulses with 6-10 kV amplitude and 80 ns duration. Additionally, we introduced variations of a step in the rising edge of the waveform. We performed measurements both in air and nitrogen to electrically characterize the discharge while analyzing the streamer propagation in the plasma reactor with intensified charge-coupled device imaging and measured ozone generation (in air). The results show that we can indeed control the propagation of the streamer discharge with the stepped waveform, but that the rise-time variation has little effect on the streamer propagation in our system. However, the streamer velocity and structure differs significantly comparing discharges in nitrogen and air for the same applied voltage waveform. Additionally, for some of the stepped waveforms we found a slight increase of the ozone yield for air at low overall energy densities.

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Section: Final Thoughts On System Optimizationsupporting

confidence: 64%

Effective streamer discharge control by tailored nanosecond-pulsed high-voltage waveforms

Huiskamp

Ton

Azizi

et al. 2021

J. Phys. D: Appl. Phys.

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“…A type of fast Marx generator that is extremely suitable for discharge generation is the solid-state Marx generator [99][100][101][102][103][104]. This is a classical Marx generator implemented with solid-state switches, such as MOSFETs or IGBTs.…”

Section: Semiconductor Marx Generatorsmentioning

confidence: 99%

“…While this example shows microsecond pulses, the same circuit was also implemented with MOSFETs, which allowed for 10-kV, 100-ns duration pulses [105]. Recently, this circuit was extended to 15 stages and operated with a plasma reactor for efficient ozone generation [99]. 4 That is not to say that they are not used for discharge generation at all.…”

Section: Semiconductor Marx Generatorsmentioning

confidence: 99%

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

Huiskamp

2020

Plasma Sources Sci. Technol.

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Streamer discharges generated by nanosecond high-voltage pulses have gained attraction for a variety of reasons, but mainly because they are very efficient for a number of plasma-processing applications. More specifically, researchers have noted that the pulse duration and the rise time of the applied high-voltage pulse have a significant influence on the radical yield of the transient plasmas generated with these pulses; shorter pulses result in higher yields. With the need to study transient plasmas generated by these short pulses comes the need to understand how to generate those pulses and to understand the interaction between the pulse source and the discharge. In this topical review, we will explore the different methods with which to generate nanosecond highvoltage pulses, how the interaction between the pulse source and the discharge may influence the source and the discharge and how to optimize the energy transfer from the pulse source to the discharge.

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“…The conventional methods to generate high-voltage pulses include transmission lines [11], magnetic pulse compression (MPC) [12], linear transformer driver (LTD) [13], and Marx generators [14]. Among them, solid-state Marx generators (SSMGs) using semiconductor switches such as MOSFETs or IGBTs are the most flexible in the adjustment of all parameters of pulses [15][16][17].…”

Section: Introductionmentioning

confidence: 99%

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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Ozone Generation with a Flexible Solid-State Marx Generator

Cited by 7 publications

References 7 publications

Effective streamer discharge control by tailored nanosecond-pulsed high-voltage waveforms

Effective streamer discharge control by tailored nanosecond-pulsed high-voltage waveforms

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

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

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