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Power Electronic Supply Systems
For Non-Thermal
Plasma SourcesM. Hołub, S. Kalisiak, T. Jakubowski, M. Balcerak
Gas Discharge 2010, 6 – 10. 09. Greifswald
www.we.zut.edu.pl
Outline:
- Introduction
- Typical supply voltage waveforms
- DBD reactor electrical equivalent circuit
- Power electronic supply sources
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Outline:
- Introduction
- Typical supply voltage waveforms
- DBD reactor electrical equivalent circuit
- Power electronic supply sources
www.we.zut.edu.pl
Low frequency system
High frequency system
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Outline:
- Introduction
- Typical supply voltage waveforms
- DBD reactor electrical equivalent circuit
- Power electronic supply sources
www.we.zut.edu.pl
Typical voltage waveforms
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Outline:
- Introduction
- Typical supply voltage waveforms
- DBD reactor electrical equivalent circuit
- Power electronic supply sources
www.we.zut.edu.pl
Plasma reactor as electric load – equivalent circuit
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Plasma reactor as electric load – equivalent circuit
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Plasma reactor as electric load – equivalent circuit
C(t)
Cw
Sb
Rb
Lb
S
R(t)Rw
Source: B. G. Rodríguez-Méndez, R. López-Callejas, R. Peña-Eguiluz, A. Mercado-Cabrera, R. Valencia-Alvarado, S. R. Barocio, A. de la
Piedad-Beneitez, J. S. Benítez-Read, and J. O. Pacheco-Sotelo,: A MODEL OF PLASMA DISCHARGES IN PRERCING REGIME FOR WATER
TREATMENT, 25th IASTED, Feb. 6-8, Lanzarote, Spain
A. Mizuno, Y. Yamazaki, S. Obama, E. Suzuki, K. Okazaki: „Effect of Voltage Waveform on Partial Discharge in Ferroelectric Pellet Layer
for Gas Cleaning”, IEEE Transactions on Industry Applications, Vol. 29, No 2, March/April (1993)
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Outline:
- Introduction
- Typical supply voltage waveforms
- DBD reactor electrical equivalent circuit
- Power electronic supply sources
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Switch mode power supplies: high- end solution
Rectifier / Voltage
multiplier
LineFilter
SMPSPower Factor
Corrector
Power electronic supply sources
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Voltage multiplier:
Cockroft-Walton multiplier
Power electronic supply sources
Voltage multiplier:
Greinacher cascade
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Power electronic supply sources
•10 – 25 kV
•Around 1kW of power
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Limited efficiency ! – around 40% for low power systemsUp to 9x% for large power applications
Source: Henryka Danuta Stryczewska: „TECHNOLOGIE PLAZMOWE W ENERGETYCE I INśYNIERII ŚRODOWISKA”,
Wydawnictwo Politechniki Lubelskiej Lublin 2009
Power electronic supply sources
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Power electronic supply sources
• 5 – 25 kV
• Around 1kW of power
• up to 30 kHz
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Power electronic supply sources
0 0.002 0.004 0.006 0.008 0.01 0.012 0.014 0.016 0.018 0.02-2000
-1500
-1000
-500
0
500
1000
1500
2000
t [s]
Spa
nnun
g [V
]
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Power electronic supply sources
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Power electronic supply sources
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� Solid state pulse power modulators (SSPPM) are used in physics research (plasma technology)
� Very high demands on voltage amplitude and pulse duration� System topologies are known multiplying the output voltage / switch blocking voltage
ratio (usually the factor is up to f=2)
A classical Marx topology pulse power source 1
1 E. Marx, Patent DE455933, 13 Feb 1928
Power electronic supply sources
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� Solid state pulse power modulators (SSPPM) are used in physics research (plasma technology)
� Very high demands on voltage amplitude and pulse duration� System topologies are known multiplying the output voltage / switch blocking voltage
ratio (usually the factor is up to f=2)
Electrical pulse generators as in 22 R. A. Fitch et al. , Patent US3366799, 30 Jan 1968
( )tUU iout ωcos13 −=
Power electronic supply sources
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Proposed topology:
Power electronic supply sources
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Proposed topology:
Power electronic supply sources
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Proposed topology:( )tUU iout ωcos21−=
nUU iout ⋅⋅= 3(max)
Ui – initial voltage
n –number of stages
Simulations led for Ui = 600V
Power electronic supply sources
Measurements were led using LeCroyWaveRunner 6100A digital oscilloscope, PPE 20kV voltage probe and Fluke ISM 5010 current shunt
Practical conversion factor per stage f=2,88
Maximal voltage for 600V supply: 17,3 kV
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Measurement results:
Single stage magnetic compressor;Rise time compression from 690ns to 300ns (2,3 times)
Power electronic supply sources
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Podsumowanie:
Summary:� Power electronic supplies are used in large variety of
non-thermal plasma applications. Solid state switches offer high reliability and increasing blocking voltage capabilities. Due to special switching techniques and system topologies high efficiency ratings are obtained with additional benefits as controllability and size/weight reduction Table 1 summarizes efficiency ratings of different supply systems
Supply system Character Efficiency [%]
Pulsed [17]Magnetic pulse compression
Up to 76
Resonant [18] Up to 96
Pulsed [19] Bipolar output waveform Up to 76,9
LF AC HV LF transformer ~ 40
Power Electronic Supply Systems
For Non-Thermal
Plasma SourcesM. Hołub, S. Kalisiak, T. Jakubowski, M. Balcerak
Gas Discharge 2010, 6 – 10. 09. Greifswald