Novel modulator topology for corona plasma generation

T.H.P. Ariaans, A.J.M. Pemen, G.J.J. Winands, Z. Liu, E.J.M. Heesch, van

Research output: Contribution to journalArticleAcademicpeer-review

54 Downloads (Pure)

Abstract

Gas cleaning using plasma technology is slowly introduced into industry nowadays. Several challenges still have to be overcome: increasing the scale, safety, life time and reducing costs. In 2006 we demonstrated a 20 kW nanosecond pulsed corona system. The electrical efficiency was > 90%. O-radical yields were found to be very high (3-7 mole/kWh). However, to be competitive, high costs of the pulsed power technology are still a major hurdle. Here we present a novel modulator for efficient generation of large volume corona plasma. Only a small amount of expensive high voltage components are required. Switching is done at an intermediate voltage level of 1 kV with standard thyristors. At the high voltage side, only a diode and a pulse transformer are needed. The estimated costs are about 5 kEuro/kW, whereas for state of the art pulsed power technology these costs usually are about 20-30 kEuro/kW. Detailed investigations on the modulator and a wire plate corona reactor will be presented. Modulator parameters have been varied systematically as well as reactor parameters (number of electrodes, electrode-plate distance). The O-radical yield was determined from the measured ozone concentrations at the exhaust of the reactor. With a detailed kinetic model, ozone concentrations could be calculated back to the initial O*-yields. The following conclusions will be discussed: for all parameters, an electrical efficiency of > 90% could be obtained. With fast imaging, the average streamer width was found to be ~ 737 µm and an estimate for the plasma volume was made. The obtained yields of O-radicals (1-4 mole/kWh) are excellent. The conditions to obtain high yields will be discussed.
Original languageEnglish
Pages (from-to)1034-1036
Number of pages3
JournalActa Physica Polonica A
Volume115
Issue number6
Publication statusPublished - 2009

Fingerprint

plasma generators
coronas
modulators
topology
costs
reactors
ozone
high voltages
thyristors
electrodes
transformers
cleaning
safety
industries
diodes
wire
life (durability)
kinetics
electric potential
estimates

Cite this

Ariaans, T.H.P. ; Pemen, A.J.M. ; Winands, G.J.J. ; Liu, Z. ; Heesch, van, E.J.M. / Novel modulator topology for corona plasma generation. In: Acta Physica Polonica A. 2009 ; Vol. 115, No. 6. pp. 1034-1036.
@article{a5d3911be7464593b397b99b8ad2da39,
title = "Novel modulator topology for corona plasma generation",
abstract = "Gas cleaning using plasma technology is slowly introduced into industry nowadays. Several challenges still have to be overcome: increasing the scale, safety, life time and reducing costs. In 2006 we demonstrated a 20 kW nanosecond pulsed corona system. The electrical efficiency was > 90{\%}. O-radical yields were found to be very high (3-7 mole/kWh). However, to be competitive, high costs of the pulsed power technology are still a major hurdle. Here we present a novel modulator for efficient generation of large volume corona plasma. Only a small amount of expensive high voltage components are required. Switching is done at an intermediate voltage level of 1 kV with standard thyristors. At the high voltage side, only a diode and a pulse transformer are needed. The estimated costs are about 5 kEuro/kW, whereas for state of the art pulsed power technology these costs usually are about 20-30 kEuro/kW. Detailed investigations on the modulator and a wire plate corona reactor will be presented. Modulator parameters have been varied systematically as well as reactor parameters (number of electrodes, electrode-plate distance). The O-radical yield was determined from the measured ozone concentrations at the exhaust of the reactor. With a detailed kinetic model, ozone concentrations could be calculated back to the initial O*-yields. The following conclusions will be discussed: for all parameters, an electrical efficiency of > 90{\%} could be obtained. With fast imaging, the average streamer width was found to be ~ 737 µm and an estimate for the plasma volume was made. The obtained yields of O-radicals (1-4 mole/kWh) are excellent. The conditions to obtain high yields will be discussed.",
author = "T.H.P. Ariaans and A.J.M. Pemen and G.J.J. Winands and Z. Liu and {Heesch, van}, E.J.M.",
year = "2009",
language = "English",
volume = "115",
pages = "1034--1036",
journal = "Acta Physica Polonica A",
issn = "0587-4246",
publisher = "Polish Academy of Sciences",
number = "6",

}

Ariaans, THP, Pemen, AJM, Winands, GJJ, Liu, Z & Heesch, van, EJM 2009, 'Novel modulator topology for corona plasma generation', Acta Physica Polonica A, vol. 115, no. 6, pp. 1034-1036.

Novel modulator topology for corona plasma generation. / Ariaans, T.H.P.; Pemen, A.J.M.; Winands, G.J.J.; Liu, Z.; Heesch, van, E.J.M.

In: Acta Physica Polonica A, Vol. 115, No. 6, 2009, p. 1034-1036.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Novel modulator topology for corona plasma generation

AU - Ariaans, T.H.P.

AU - Pemen, A.J.M.

AU - Winands, G.J.J.

AU - Liu, Z.

AU - Heesch, van, E.J.M.

PY - 2009

Y1 - 2009

N2 - Gas cleaning using plasma technology is slowly introduced into industry nowadays. Several challenges still have to be overcome: increasing the scale, safety, life time and reducing costs. In 2006 we demonstrated a 20 kW nanosecond pulsed corona system. The electrical efficiency was > 90%. O-radical yields were found to be very high (3-7 mole/kWh). However, to be competitive, high costs of the pulsed power technology are still a major hurdle. Here we present a novel modulator for efficient generation of large volume corona plasma. Only a small amount of expensive high voltage components are required. Switching is done at an intermediate voltage level of 1 kV with standard thyristors. At the high voltage side, only a diode and a pulse transformer are needed. The estimated costs are about 5 kEuro/kW, whereas for state of the art pulsed power technology these costs usually are about 20-30 kEuro/kW. Detailed investigations on the modulator and a wire plate corona reactor will be presented. Modulator parameters have been varied systematically as well as reactor parameters (number of electrodes, electrode-plate distance). The O-radical yield was determined from the measured ozone concentrations at the exhaust of the reactor. With a detailed kinetic model, ozone concentrations could be calculated back to the initial O*-yields. The following conclusions will be discussed: for all parameters, an electrical efficiency of > 90% could be obtained. With fast imaging, the average streamer width was found to be ~ 737 µm and an estimate for the plasma volume was made. The obtained yields of O-radicals (1-4 mole/kWh) are excellent. The conditions to obtain high yields will be discussed.

AB - Gas cleaning using plasma technology is slowly introduced into industry nowadays. Several challenges still have to be overcome: increasing the scale, safety, life time and reducing costs. In 2006 we demonstrated a 20 kW nanosecond pulsed corona system. The electrical efficiency was > 90%. O-radical yields were found to be very high (3-7 mole/kWh). However, to be competitive, high costs of the pulsed power technology are still a major hurdle. Here we present a novel modulator for efficient generation of large volume corona plasma. Only a small amount of expensive high voltage components are required. Switching is done at an intermediate voltage level of 1 kV with standard thyristors. At the high voltage side, only a diode and a pulse transformer are needed. The estimated costs are about 5 kEuro/kW, whereas for state of the art pulsed power technology these costs usually are about 20-30 kEuro/kW. Detailed investigations on the modulator and a wire plate corona reactor will be presented. Modulator parameters have been varied systematically as well as reactor parameters (number of electrodes, electrode-plate distance). The O-radical yield was determined from the measured ozone concentrations at the exhaust of the reactor. With a detailed kinetic model, ozone concentrations could be calculated back to the initial O*-yields. The following conclusions will be discussed: for all parameters, an electrical efficiency of > 90% could be obtained. With fast imaging, the average streamer width was found to be ~ 737 µm and an estimate for the plasma volume was made. The obtained yields of O-radicals (1-4 mole/kWh) are excellent. The conditions to obtain high yields will be discussed.

M3 - Article

VL - 115

SP - 1034

EP - 1036

JO - Acta Physica Polonica A

JF - Acta Physica Polonica A

SN - 0587-4246

IS - 6

ER -