A solid state high voltage pulse modulator which is compact and without oil or a pulse transformer

Cassel, R.

doi:10.1109/modsym.2004.1433509

Cited by 25 publications

(10 citation statements)

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“…Recent technological upgrade in the mature Marx modulator concept lead to the intensive use of semiconductor switches, replacing the passive elements and contributing to the compactness of the Marx modulators, capability to generate square pulse shapes, possibility to control the number of pulses, pulsewidth, frequency, and the ability to deal with different load conditions [1][2][3][4]. In effect, growing variety of environmental, biological, medical, food and industrial applications using repetitive unipolar and/or bipolar high-voltage pulses, for enhancing the characteristics of a final product or method, impose various conditions to the Marx modulators.…”

Section: Introductionmentioning

confidence: 99%

Voltage droop compensation based on resonant circuit for generalized high voltage solid-state Marx modulator

Canacsinh

Redondo

Silva

et al. 2016

2016 IEEE Applied Power Electronics Conference and Exposition (APEC)

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Fig. 1. S 2 BM modulator with n stages for bipolar or unipolar pulse generation.Fig. 2. Tested HV topology of the n stages S 2 BM modulator, with auxiliary resonant based voltage droop compensation stage for bipolar or unipolar pulse generation, particular case of circuit of Fig. 1.Abstract-The purpose of this paper is to present and discuss the voltage droop compensation associated with long pulses generated by solid-state bipolar or unipolar high-voltage Marx modulators. In particular a novel design scheme for voltage droop compensation based on resonant circuit in solid-state bipolar (positive and/or negative pulses) high-voltage Marx generator, using off-the-shelf components, design and control, is described. The compensation consists in adding one auxiliary resonant stage to the existing Marx stages, without changing the modularity and topology of the circuit. The auxiliary compensation voltage is added to the output voltage to compensate the pulse voltage droop. Experimental results are presented for five stages Marx circuit, 10% voltage droop, using 1 kV pulse amplitude, 100 µs pulse width, 9.5 ms relaxation time and with 50 Hz pulse repetition rate.

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Section: Introductionmentioning

confidence: 99%

Voltage droop compensation based on resonant circuit for generalized high voltage solid-state Marx modulator

Canacsinh

Redondo

Silva

et al. 2016

2016 IEEE Applied Power Electronics Conference and Exposition (APEC)

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“…In order to accomplish this, special kind of modulators are needed, which produce high-voltage pulses and currents with the suitable parameters. These include almost rectangular pulses for efficiency, independent from the normal conductivity variations of the load, flexibility to accommodate different pulse widths and repetition rates and protection from occasional short-circuits due to the presence of air bubbles in the food pipe [3][4].…”

Section: Introductionmentioning

confidence: 99%

25 kV bipolar solid-state Marx generator for industrial food applications

Redondo

Pereira

2015

2015 IEEE Pulsed Power Conference (PPC)

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The preliminary results from a bipolar industrial solidstate based Marx generator, developed for the food industry, capable of delivering 25 kV/250 A positive and negative pulses with 12 kW average power, are presented and discussed. This modular topology uses only four controlled switches per cell, 27 cells in total that can be charged up to 1000V each, the two extra cells are used for droop compensation. The triggering signals for all the switches are generated by a FPGA. Considering that biomaterials are similar to resistive type loads, experimental results from this new bipolar 25 kV modulator into resistive loads are presented and discussed.

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“…It also dissipates 50 kW of power to maintain its operation. We were looking for a different kind of modulator when we read about the solid-state Marx Generator [4].…”

Section: Introductionmentioning

confidence: 99%