A Compact High-Power Ultra-Wideband Bipolar Pulse Generator

A compact high-power ultra-wideband bipolar pulse generator based on a modified Marx circuit is designed, which is mainly composed of a primary power supply, Marx generator, sharpening and cutoff subnanosecond spark gap switches, and coaxial transmission lines. The Marx generator with modified circuit structure has thirty-two stages and is composed of eight disk-like modules. Each module consists of four capacitors, two spark gap switches, four charging inductors, and a mechanical support. To simplify the design of the charging structure and reduce the number of switches, four groups of inductors are used to charge the capacitors of the Marx generator, two of which are used for positive voltage charging and the other two for negative voltage charging. When the capacitor of each stage is charged to 35 kV, the maximum output peak voltage can reach 1 MV when the Marx generator is open circuit. The high-voltage pulse generated by the Marx generator charges the transmission line and forms a bipolar pulse through sharpening and cutoff switches. All transmission lines used for bipolar pulse generation have an impedance of 10 Ω. When the 950 kV pulse voltage generated by the Marx generator is fed into the transmission line, the bipolar pulse peak voltage can reach 390 kV, the center frequency of the pulse is about 400 MHz, and the output peak power is about 15.2 GW.

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Single-Switch-Based High-Power Bipolar Pulse Generator With Inverted U-Shaped Parallel-Plate Transmission Line

IEEE Transactions on Microwave Theory and Techniques ◽

10.1109/tmtt.2018.2804915 ◽

2018 ◽

Vol 66 (5) ◽

pp. 2425-2432

Author(s):

Jiheon Ryu ◽

Jong-Won Yu

Keyword(s):

Transmission Line ◽

High Power ◽

Parallel Plate ◽

Pulse Generator ◽

Bipolar Pulse

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Recent advances in compact repetitive high-power Marx generators

Laser and Particle Beams ◽

10.1017/s0263034619000272 ◽

2019 ◽

Vol 37 (01) ◽

pp. 110-121 ◽

Cited By ~ 6

Author(s):

Falun Song ◽

Fei Li ◽

Beizhen Zhang ◽

Mingdong Zhu ◽

Chunxia Li ◽

...

Keyword(s):

High Power ◽

Printed Circuit Board ◽

Pulse Generator ◽

Pulsed Power ◽

Circuit Board ◽

Constant Current ◽

Marx Generator ◽

Power Generators ◽

Square Wave ◽

Film Dielectric

AbstractThis paper introduces recent activities on Marx-based compact repetitive pulsed power generators at the Institute of Applied Electronics (IAE), China Academy of Engineering Physics (CAEP), over the period 2010–2018. A characteristic feature of the generators described is the use of a simplified bipolar charged Marx circuit, in which the normal isolation resistors or inductors to ground are removed to make the circuit simpler. Several pulse-forming modules developed to generate a 100 ns square wave output are introduced, including thin-film dielectric lines of different structures, a pulse-forming line based on a Printed Circuit Board, and non-uniform pulse-forming networks. A compact repetitive three-electrode spark gap switch with low-jitter, high-voltage, and high-current was developed and is used in the generators. A positive and negative series resonant constant current power supply with high precision and high power is introduced. As an important part of the repetitive pulse power generator, a lower jitter pulse trigger source is introduced. Several typical high-power repetitive pulsed power generators developed at IAE are introduced including a 30 GW low-impedance Marx generator, a compact square-wave pulse generator based on Kapton-film dielectric Blumlein line, a 20 GW high pulse-energy repetitive PFN-Marx generator, and a coaxial Marx generator based on ceramic capacitors. The research of key technologies and their development status are discussed, which can provide a reference for the future development and application of miniaturization of compact and repetitive Marx generators.

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LLAMPÜDKEÑ: A high-current, low-impedance pulser employing an auxiliary exponential transmission line

Laser and Particle Beams ◽

10.1017/s0263034600010569 ◽

1997 ◽

Vol 15 (2) ◽

pp. 241-248 ◽

Cited By ~ 15

Author(s):

H. Chuaqui ◽

E. Wyndham ◽

C. Friedli ◽

M. Favre

Keyword(s):

Transmission Line ◽

Transmission Lines ◽

Rectangular Pulse ◽

Pulse Power ◽

Marx Generator ◽

Load Impedance ◽

Central Conductor ◽

Pulse Power Generator ◽

Under Construction ◽

Auxiliary Line

The design and constructional aspects of a novel pulse power generator for use in dense plasma research presently under construction are presented. The generator consists of two Marx capacitor banks, each of 0.25 μF, 480 kV, and 28.8 kJ. Each Marx generator drives a water transmission line, in which the live electrode is the central conductor. The transmission lines consist of a constant impedance section followed by a multielectrode gas linegap followed by an exponential taper to the load section. The novel feature is the use of an auxiliary exponential line coupled at the load. This line controls both the voltage and the effective impedance at the load section. In addition, by leaving this line circuit open, energy not coupled to the plasma in the initial high-impedance phase may be reflected back and deposited into the discharge, increasing the peak current by 50%. Circuit simulations using a real-time-varying load impedance show that the current pulse rises in an approximately linear way to a maximum of 1.2 MA at 250 ns. The current falls to zero in the following 250 ns. The current waveform may be flattened simply by disconnecting the auxiliary line, giving a rectangular pulse of 350 ns with a maximum value of 950 kA. The overall impedance of the entire system may be adjusted by varying the separation between the conductors. The equivalent source impedance at the load is 0.8 Ω. This low value is by virtue of the auxiliary line, which limits the voltage at the load section and reduces the insulator constraints. We present simulations of the generator under real load conditions. The model also is checked against analytical solutions of exponential line behavior and against other published models of pulse power generators.

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High-power ultra-wideband electrical-pulse generation using a doped silicon photoconductive switch

Microwave and Optical Technology Letters ◽

10.1002/mop.21282 ◽

2005 ◽

Vol 48 (1) ◽

pp. 121-125 ◽

Cited By ~ 7

Author(s):

B. Vergne ◽

V. Couderc ◽

A. Barthélémy ◽

M. Lalande ◽

V. Bertrand ◽

...

Keyword(s):

High Power ◽

Pulse Generation ◽

Electrical Pulse ◽

Ultra Wideband ◽

Photoconductive Switch ◽

Doped Silicon

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A Novel Configuration of Modular Bipolar Pulse Generator Topology Based on Marx Generator With Double Power Charging

IEEE Transactions on Plasma Science ◽

10.1109/tps.2016.2542103 ◽

2016 ◽

Vol 44 (10) ◽

pp. 1872-1878 ◽

Cited By ~ 21

Author(s):

Chenguo Yao ◽

Shoulong Dong ◽

Yajun Zhao ◽

Yan Mi ◽

Chengxiang Li

Keyword(s):

Pulse Generator ◽

Marx Generator ◽

Bipolar Pulse

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A Zero Crossing Hybrid Bidirectional DC Circuit Breaker for HVDC Transmission Systems

Energies ◽

10.3390/en14051349 ◽

2021 ◽

Vol 14 (5) ◽

pp. 1349

Author(s):

Geon Kim ◽

Jin Sung Lee ◽

Jin Hyo Park ◽

Hyun Duck Choi ◽

Myoung Jin Lee

Keyword(s):

Transmission Line ◽

Transmission Lines ◽

High Power ◽

Circuit Breaker ◽

Fault Current ◽

Line Load ◽

Zero Crossing ◽

Hvdc Transmission ◽

Dc Circuit Breaker ◽

Current Flows

With the increasing demand for renewable energy power generation systems, high-power DC transmission technology is drawing considerable attention. As a result, stability issues associated with high power DC transmission have been highlighted. One of these problems is the fault current that appears when a fault occurs in the transmission line. If the fault current flows in the transmission line, it has a serious adverse effect on the rectifier stage, inverter stage and transmission line load. This makes the transmission technology less reliable and can lead to secondary problems such as fire. Therefore, fault current must be managed safely. DC circuit breaker technology has been proposed to solve this problem. However, conventional technologies generally do not take into account the effects of fault current on the transmission line, and their efficiency is relatively low. The purpose of this study is to introduce an improved DC circuit breaker that uses a blocking inductor to minimize the effect of fault current on the transmission line. It also uses a ground inductor to efficiently manage the LC resonant current and dissipate residual current. DC circuit breakers minimize adverse effects on external elements and transmission lines because the use of elements placed on each is distinct. All of these processes are precisely verified by conducting simulation under 200 MVA (±100 kV) conditions based on the VSC-based HVDC transmission link. In addition, the mechanism was explained by analyzing the simulation results to increase the reliability of the circuit in this paper.

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Development of a Fast Marx Generator for High Power Ultra Wideband Pulse Radiation

Acta Physica Polonica A ◽

10.12693/aphyspola.115.1084 ◽

2009 ◽

Vol 115 (6) ◽

pp. 1084-1085 ◽

Cited By ~ 1

Author(s):

B. Cadilhon ◽

L. Pecastaing ◽

T. Reess ◽

A.Silvestre de Ferron ◽

P. Pignolet ◽

...

Keyword(s):

High Power ◽

Ultra Wideband ◽

Marx Generator ◽

Pulse Radiation

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An Improved Ultra-Wideband, Ultra-Short Monocycle Pulse Generator

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.588-589.781 ◽

2012 ◽

Vol 588-589 ◽

pp. 781-784

Author(s):

Bi Shang Liu ◽

Jian Ming Zhou ◽

Ju Zhou

Keyword(s):

Transmission Line ◽

Pulse Width ◽

Pulse Shaping ◽

Pulse Generator ◽

Short Circuit ◽

Schottky Diodes ◽

Simulation Software ◽

Ultra Wideband ◽

Microstrip Transmission Line ◽

Generator Circuit

This paper presents an improved ultra-wideband monocycle pulse generator circuit based on step recovery diode. This pulse generator circuit uses short-circuit microstrip transmission line to generate the Gaussian pulse the monocycle pulse. The improved pulse-shaping network employs two schottky diodes and a MESFET to suppress the pulse ringing. The SRD model was built in RF simulation software ADS, and then the design and simulation of the pulse generator circuit was accomplished using this model. The experiments showed an monocycle pulse of 400ps pulse width with good symmetry. The measured results agreed with the simulation.

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