gliding arc plasma reactor and its power · pdf fileinstitute of electrical engineering and...

Institute of Electrical Engineering and Electrotechnologies

Lublin University of Technology

GLIDING ARC PLASMA REACTOR

AND ITS POWER SUPPLY SYSTEMS

Jarosław DIATCZYK



www.ipee.pollub.pl

Nadbystrzycka 38a , 20-618 Lublin, POLAND

e-mail: [email protected]

PlasTEP+ Workshop “Plasma for Environmental and Energy Applications”, February 13, 2014, Uppsala

Lublin University

of Technology

Research labs in the CoE AsppectFaculty of Management Science

and Engineering Training

6 faculties11.000 students

1000 total staff83 professors Seat of University President and Council



2


Plasma Technologies in Environment Protection

industrial ozone generators and water conditioning,

plasma reactors to remove gaseous pollutants,

electrical supply systems for ozonizers and plasma reactors,

bio-medical application: sterilization, disinfection, skin treatment,

mathematical modeling of the arc discharge reactors.

The major research and development areas

in the COE ASPPECT and Institute of EE&Et of LUT

Superconductivity Application

superconducting magnets, their design,

construction and application,

superconducting fault current limiters,

magnetic OGMS separators,

superconducting magnetic energy storage

systems (SMES).



3


Electromagnetic Compatibility

electromagnetic field influence on living

organisms,

shielded chambers for electromagnetic

measurements,

monitoring of electromagnetic interferences,

soft magnetic materials, their applications in

power devices and electronics,

non-linear circuits with magnetic elements,

electromagnetic field calculations.

4



Renewable Energy Sources

power systems for discharge devices,

REN cooperation with power grid.


OUTLINE

Gliding arc plasma reactor

Power supply systems for gliding arc plasma reactors

Experimental results

Conclusion

5




GLIDING ARC PLASMA REACTOR

1 – discharge chamber,

2 – nozzle,

3 – ignition electrode,

4 – working electrode.

Fig. 1. Gliding Arc plasma reactor

6




GAS SUPPLY SYSTEM

Fig. 2. Gas supply system:

1 – plasma reactor, 2 – electronic control system,

3, 4, 5 – flow rate controller, 6, 7, 8 – working gases.

Fig. 3. Flow rate controller

Working gases:

- argon,

- nitrogen,

- air.

7




GLIDING ARC DISCHARGES

FOR DIFFERENT POWER SUPPLY SYSTEMS

a – integrated power supply

system based on transformers

with the soft external

characteristic;

b - power supply system

based on transformers with

the amorphous limbs

(Metglas) with external

ignition system;

c - power supply system based

on five-limbs transformer.

a b c

8




Fig. 4. Working gliding arc plasma reactor supplied from different power systems

EXTERNAL CHARACTERISTICS OF SUPPLY SYSTEM

9Fig. 5. External characteristics of supply system and operation cycle of Gliding Arc reactor




INTEGRATED POWER SUPPLY SYSTEM

10Fig. 6. Integrated power supply system




POWER SUPPLY SYSTEM BASED ON TRANSFORMERS

WITH THE AMORPHOUS LIMBS

11

Fig. 7. Power supply system based on transformers with

the amorphous limbs with external ignition system




POWER SUPPLY SYSTEM

BASED ON FIVE-LIMBS TRANSFORMER

12

Fig. 8. Power supply system based

on five-limbs transformer




WORKING PARAMETERS

OF THE GLIDING ARC PLASMA REACTOR

13

Discharge chamber geometry

chamber diameter 80 mm

electrode length 141 mm

electrode distance in the ignition area 1 - 6 mm

electrode distance in the extinction area 30 - 35 mm

Gas parameters

process gases argon, air, nitrogen

gas flow rates 0.3 – 3.5 m3/h

Power supply system parameters

inter-electrode voltage 400 – 1500 V

electrode current 1.0 – 3.5 A




VOLTAGE CHARACTERISTICS

Fig. 9. Voltage characteristics for different gases:

UW – voltage between working electrodes,

UP – transformer primary windings voltage. 14




VOLTAGE, CURRENT AND POWER

15

Fig. 10. Integrated power supply system Fig. 11. Power supply system based on transformers

with the amorphous limbs1 – current, 2 – voltage, M – power.

1 – current, 2 – voltage, M – power.




POWER CONSUMPTION

FOR DIFFERENT GASES AND FLOW RATES

Fig. 12. Power consumption for different gases and flow rates

(power supply system based on transformer with amorphous limbs,

primary windings voltage:130 V). 16

0

500

1000

1500

2000

2500

3000

0,0 0,5 1,0 1,5 2,0 2,5 3,0 3,5

Gas flow rate, m3/h

Po

wer,

W

.

Argon Nitrogen Air




POWER CONSUMPTION

TRANSFORMERS WITH AMORPHOUS LIMBS

Fig. 13. Power consumption for various argon concentration in working gas

(power supply system based on transformer with amorphous limbs, primary

windings voltage:130 V, processing gas: nitrogen). 17

900

1 100

1 300

1 500

1 700

1 900

2 100

2 300

2 500

2 700

0% 10% 20% 30% 40% 50% 60% 70%

Argon concentration

Po

wer,

W

3.5 m3/h 3.0 m3/h 2.5 m3/h 2.0 m3/h 1.5 m3/h 1.0 m3/h 1.0 m3/h

3.5 m3/h 3.0 m3/h 2.5 m3/h 2.0 m3/h 1.5 m3/h




POWER CONSUMPTION

INTEGRATED POWER SUPPLY SYSTEM


(integrated power supply system, primary windings voltage:230 V, processing

gas: nitrogen). 18

700

900

1 100

1 300

1 500

1 700

1 900

2 100

0% 10% 20% 30% 40% 50% 60% 70%

Argon concentration

Po

we

r, W

3.5 m3/h 3.0 m3/h 2.5 m3/h 2.0 m3/h 1.5 m3/h 1.0 m3/h 0.5 m3/h

3.5 m3/h 3.0 m3/h 2.5 m3/h 2.0 m3/h 1.5 m3/h 0.5 m3/h 1.0 m3/h




POWER CONSUMPTION

FIVE-LIMBS TRANSFORMER


(power supply system based on five-limbs transformer, primary windings

voltage:110 V, processing gas: nitrogen). 19

700

900

1 100

1 300

1 500

1 700

1 900

2 100

0% 10% 20% 30% 40% 50% 60% 70%

Argon concentration

Po

we

r, W

3.5 m3/h 3.0 m3/h 2.5 m3/h 2.0 m3/h 1.5 m3/h 1.0 m3/h 0.5 m3/h

3.5 m3/h 3.0 m3/h 2.5 m3/h 2.0 m3/h 1.5 m3/h 0.5 m3/h 1.0 m3/h




DISCHARGE CURRENT

Fig. 16. Discharge current as a function of argon concentration in processing

gas for different power supply systems.20



0,0

0,5

1,0

1,5

2,0

2,5

3,0

0% 10% 20% 30% 40% 50% 60% 70%

concentration of argon in processing gas

dis

ch

arg

e c

urr

en

t, A

Integrated power supply system

Power supply system based on transformer with amorphous limbs

Power supply system based on 5-limbs transformer

FREQUENCY INFLUENCE

f = 50 Hz

21

f = 100 Hz f = 200 Hz




Fig. 17. Discharge in the gliding arc plasma reactor supplied from different voltage frequency

POWER CONSUMPTION

FOR DIFFERENT VOLTAGE FREQUENCY

Fig. 18. Power consumption for different voltage frequency22



0

500

1000

1500

2000

2500

0 50 100 150 200 250f, Hz

P, W

nitrogen argon air


CONCLUSION

23

Power consumption of the gliding arc discharge plasma rector and its stable

operation depends on many factors, among which the most important are:

• power supply system configuration,

• processing gas flow rate,

• processing gas chemical composition.

Trace gases admixtures can essentially influence the plasma chemistry process.

Argon admixture to the processing gas stabilizes the discharge and makes

possible to transfer larger power from the power supply system to the

discharge.

Correctly selected power supply system decides about plasma chemistry and

technological application of this kind of non-thermal non-equilibrium plasma.




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