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Power Electronic Supply Systems

For Non-Thermal

Plasma SourcesM. Hołub, S. Kalisiak, T. Jakubowski, M. Balcerak

mholub@zut.edu.pl

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

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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

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Typical voltage waveforms

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Outline:

- Introduction

- Typical supply voltage waveforms

- DBD reactor electrical equivalent circuit

- Power electronic supply sources

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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

mholub@zut.edu.pl

Gas Discharge 2010, 6 – 10. 09. Greifswald