Marx generator

About: Marx generator is a research topic. Over the lifetime, 1276 publications have been published within this topic receiving 8970 citations.

High-voltage pulse generator based on pulse forming network and varistor

Abstract: The invention discloses a high-voltage pulse generator based on a pulse forming network and a varistor, and aims to solve the problems that the flatness of a pulse later-period waveform generated by an existing high-voltage pulse generator is lowered, and the energy waste is serious and the like. The high-voltage pulse generator is composed of a Marx generator, an MOV (Metal-Oxide Varistor) component, an inductor L1, a load Z, a discharge switch S1, and an LC filter branch; the LC filter branch is formed by connecting an inductor L2 and a capacitor C2 in parallel; the Marx generator, the L1 and the LC filter branch form two sections of pulses to form a network; the LC filter branch is connected between the Marx generator and the L1 in series; the L1 is connected between the LC filter branch and the MOV component in series; the S1 is connected between the Marx generator and the LC filter branch; and the Z, the MOV component and the Marx generator are connected in parallel. According tothe high-voltage pulse generator based on the pulse forming network and the varistor provided by the invention, a pulse forming line is not needed, a high-voltage pulse square wave with stable waveform flatness can be generated, and the energy utilization efficiency can be effectively improved.

Modelling of a High Power Microwave (HPM) Source using 300 KV Marx Generator and Horn Type Antenna

Abstract: Objectives: To analyse a High Power Microwave (HPM) source connected to a horn antenna by a mathematical model and feeding it with various pulse shapes to find its response To estimate the E far-field produced and compare it with experimental measurements Methods/Statistical analysis: A HPM source is built using spark gap switch and Marx generator Efforts are made to reduce the rise time of the radiated pulse by experimentally varying the spark gap distance and using different gases as di-electric medium A peaking switch was then designed that could achieve a rise time of 1 nS The energy discharged at the spark gap (peaking switch) is radiated using a horn type antenna Findings: In the numerous simulations it was found that a sharp rising edge of the radiated pulse can be achieved if we could minimize the peaking stage inductance A sharp rising edge gives high peak radiated power resulting in higher E far-field intensity, which is useful for the intended applications of HPM systems Experimental results to measure the E far-field were coherent with the mathematical model; however, in order to make the mathematical model more accurate with the practical results, a scaling factor was empirically derived Application/Improvements: During the experiments a range field product (rE far-field ) of more than 200 kV was achieved Although this compares well with some of the contemporary systems It is much less than 72 MV reported elsewhere To achieve it, some improvements are required to further reduce the rise time of radiated pulse This can be done by better impedance matching of the radiating antenna with the peaking stage and improvement in the Marx generator switching stages

Design of High Voltage Discharge Circuit Based on UC3843

Abstract: The UC3843-based high voltage discharge circuit was designed,in which,UC3843 acts as the core control element to have output voltage of DC-DC boost converter taken as the input voltage for Marx generator to produce electric arc and discharge;meanwhile,a solution to the UC3843-based booster in a continuous state was proposed so that the Marx generator can produce the voltage as high as several kilovolts and can achieve the purpose of high voltage discharge.

All-solid-state square-wave pulse generator

Abstract: The invention relates to a square-wave pulse generator, and in particular relates to an all-solid-state square-wave pulse generator based on a fractional ratio saturable pulse transformer and a Marx generator, and belongs to the field of pulse power. The pulse generator is composed of a charging module, a pulse boosting module and a load module. According to the pulse generator provided by the invention, the primary working voltage and an auxiliary side saturable inductor of the pulse transformer can be reduced, and compact integration of the pulse transformer and the magnetic switch can be achieved; the magnetic switch is used for replacing an air switch in the traditional Marx generator, so that the service life of the whole system and the repeat frequency are greatly enhanced; a high voltage silicon rectifier stack is used for replacing an isolated inductor in the Marx generator, and the pre-pulse problem is effectively eliminated; meanwhile quasi-square-wave pulse with relatively high quality and good flattening degree can be output via an anti-resonant network, the system is all solidified and miniaturized, and is small in volume, light in weight, convenient in transport and practicability, avoids a multi-switch serial structure of the high voltage pulse generator, and can improve the service life.

Measurement and Analysis of the Electric Field Radiation in Pulsed Power System of Linear Induction Accelerator

Abstract: The close of high voltage switch in pulsed power system of linear induction accelerator often radiates strong transient electric field,which may influence ambient sensitive electric equipments,signals and performance of other instruments,etc.By performing gridded measurement around the Marx generator,the general distribution law and basic characters of electric field radiation are summarized.The current signal of the discharge circuit is also measured,which demonstrates that the current and the radiated electric field both have a resonance frequency about 150 kHz,and contain much higher frequency components.