Repetitive and High Voltage Marx Generator Using Solid-state Devices

Huazhong Univ. of Sci. & Technol., Wuhan
IEEE Transactions on Dielectrics and Electrical Insulation (Impact Factor: 1.28). 09/2007; 14(4):937 - 940. DOI: 10.1109/TDEI.2007.4286529
Source: IEEE Xplore


Repetitive high voltage pulsed power system proposed in this study originates from conventional Marx generators. This newly developed Marx modulator employs high voltage (HV) insulated gate bipolar transistors (IGBT) as switches and series- connected diodes as isolated components. Self-supplied IGBT drivers and optic signals are used in the system to avoid insulation problem. Experimental results of 20 stages generating pulses with 60 kV, 20-100 mus and 50~500 Hz are presented to validate the performance of the system in the paper.

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    • "In addition, Marx circuits based on semiconducting switches have gained great attention in recent decades [10]–[13]. Wu et al. [12] have developed Marx generator based on insulated-gate bipolar transistors (IGBTs) with an output of 60 kV. Marx circuits based on avalanche transistors have been used to trigger optical systems, the time jitter and rise time are usually very low though their output voltage are in the range of several kilovolts [14]–[19]. "

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    • "Rossi et al. [12] used semiconductor switches in combination with a pulse transformer to develop a pulsed power generator that could achieve 4 kV/2 A/5-kHz pulses through a multistage transformer. Wu et al. [13] developed a pulsed supply using a topology of Marx generator and IGBT switches instead of gas switches to achieve repetitive HV microsecond pulses with 60 kV, 100 μs, and 500 Hz [13]. The type of repetitive pulsed power generator using IGBT and magnetic compression switches also was used to produce high Fig. 1. "
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    • "The Marx modulator is known as the first generation of impulse generators, the principle of its operation is according parallel charging of many capacitors with same specifications and series discharging them on a load, in the past the discharging procedure done by spark gap, and it causes to reduce the reliability, life time, and capability to produce the repetitive impulses [8] [19] [20]. However, by utilizing the solid state switches the specifications such as reliability, life time, impulse wave repetition rate, movability of generator pack are considerably got better [13]. "
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