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: 1.23). 09/2007; 14(4):937 - 940. DOI: 10.1109/TDEI.2007.4286529
Source: IEEE Xplore

ABSTRACT 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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    • "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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    ABSTRACT: Gas discharges using pulsed power are a promising and efficient approach for producing low-temperature plasmas at atmospheric pressure. Pulsed power generators vary widely in performance and should be chosen according to the load and application requirements. In this paper, a microsecond-pulselength high voltage (HV) generator is developed for atmospheric-pressure plasma jets that use a cascade-type voltage circuit. The electrical parameters including voltage amplitude, pulse repetition frequency, and pulsewidth, are determined by the trigger system. The voltage amplitude can be up to 10 kV and the pulse repetition frequency varies from 1 Hz to 5 kHz. The unipolar output pulse can be either positive or negative, with either square or triangular wave profile that can also be controlled by the optical trigger system. When the output pulse is a square wave, the rising edge is about 100 ns, the falling edge is approximately 2 mu s, and the pulsewidth at the top varies from 0.5 to 30 mu s. When the output pulse is a triangular wave, the base of the pulse is from 7 to 62 mu s, and the stepped rising edge is from 5 to 30 mu s. The HV pulse generator is used for producing helium plasma jets into open air. Preliminary experimental data show the effects of the pulse voltage amplitude, pulse repetition frequency, and pulsewidth on plasma jets, and confirm that the generator can provide a good performance for driving cold plasma jets.
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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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    IEEE Transactions on Dielectrics and Electrical Insulation 04/2013; 20(2):462. DOI:10.1109/TDEI.2013.6508748 · 1.23 Impact Factor
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    • "Kim et al. developed a pulsed supply using a topology of Marx generator and solid-state switches in series, to achieve high voltage microsecond pulses [11]. Liu et al. also produced a repetitive high voltage pulsed power system, which employed the high IGBT switches instead of the gas switches in the Marx generator, generating repetitive pulses with 60 kV,100ȝs and 500 Hz [12]. However, these generators can only generate a voltage of positive or negative polarity. "
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