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Indian Journal of Pure & Applied Physics (IJPAP) >
IJPAP Vol.49 [2011] >
IJPAP Vol.49(01) [January 2011] >
| Title: | Development of 2.4 ns rise time, 300 kV, ~500 MW compact co-axial Marx generator |
| Authors: | Prabaharan, T
Shyam, A
Shukla, R
Banerjee, P
Sharma, S
Deb, P
Verma, R
Kumar, R
Das, R
Das, B
Adhikary, B |
| Keywords: | Fast Marx generator
Coaxial Marx generator
Impulse voltage generator
Pulsed power |
| Issue Date: | Jan-2011 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | Compact
Marx generators are known for delivering high power in very short duration and
do not require any separate pulse shaping components. The design and operation
of 10 stage co-axial Marx generator with fast rise time of 2.4 ns, maximum
voltage 300 kV, pulse width 20 ns, energy 4.2 J and impedance 71  has been presented. The Marx
generator is capable of delivering the peak power of ~500 MW with 100 load. The coaxial geometry is
used throughout the system to achieve high value of capacitance and low value
of inductance leading to low impedance and also uses single point triggering
for erection. The generator is presented with consideration of internal
inductance and stray capacitance. The strontium titanate1 (SrTiO3)
capacitors are used in this experiment due to very low derating capacitance at
rated voltage, high dielectric strength and high current capacity. This set-up is
pressurized by dry nitrogen air for the charging of Marx to
−30 kV. The erected series current is measured by using non-inductive 10 mW current viewing resistor.
This compact Marx is fitted into a stainless steel (metallic) cylinder (102 mm
diam, 730 mm total length). The present Marx generator has been operated for
the charging of voltage up to –30 kV. The Marx generator is tested at different
charging voltages with 50 and 100 ceramic resistive loads. The measured voltage waveforms
and the corresponding data have been given. The output parameter of Marx
generator is checked by simulation and experiment. The modeling, design and
experimental results of coaxial Marx generator are discussed. |
| Page(s): | 64-72 |
| CC License: |  CC Attribution-Noncommercial-No Derivative Works 2.5 India |
| ISSN: | 0975-1041 (Online); 0019-5596 (Print) |
| Source: | IJPAP Vol.49(01) [January 2011]
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