A Modular Multilevel-Based High-Voltage Pulse Generator for Water Disinfection Applications

Mohamed A. Elgenedy, Ahmed Darwish, Shehab Ahmed, Barry W. Williams

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

The role of irreversible electroporation using pulsed electric field is to generate high-voltage (HV) pulses with a predefined magnitude and duration. These HV pulses are applied to the treatment chamber until decontamination of the sample is completed. In this paper, a new topology for HV rectangular pulse generation for water disinfection applications is introduced. The proposed topology has four arms comprised of series-connected half bridge modular multilevel converter cells. The rectangular pulse characteristics can be controlled via the software controller without any physical changes in power topology. The converter is capable of generating both bipolar and monopolar HV pulses with microsecond pulse durations at high a frequency rate with different characteristics. Hence, the proposed topology provides flexibility by software control, along with hardware modularity, scalability, and redundancy. Moreover, a cell's capacitance is relatively small, which drastically reduces the converter footprint. The adopted charging and discharging process of the cell capacitors in this topology eliminate the need of any voltage measurements or complex control for cell-capacitors voltage balance. Consequently, continuity of converter operation is assured under cell malfunction. In this paper, analysis and cell-capacitor sizing of the proposed topology are detailed. Converter operation is verified using MATLAB/Simulink simulation and scaled experimentation.

Original languageEnglish
Pages (from-to)2893-2900
Number of pages8
JournalIEEE Transactions on Plasma Science
Volume44
Issue number11
DOIs
Publication statusPublished - 1 Nov 2016

Fingerprint

pulse generators
high voltages
topology
converters
cells
water
pulses
capacitors
computer programs
malfunctions
modularity
decontamination
sizing
experimentation
redundancy
footprints
continuity
electrical measurement
charging
controllers

Keywords

  • High-voltage (HV) pulses
  • modular multilevel converters (MMCs)
  • pulsed electric field (PEF)
  • water disinfection

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Condensed Matter Physics

Cite this

A Modular Multilevel-Based High-Voltage Pulse Generator for Water Disinfection Applications. / Elgenedy, Mohamed A.; Darwish, Ahmed; Ahmed, Shehab; Williams, Barry W.

In: IEEE Transactions on Plasma Science, Vol. 44, No. 11, 01.11.2016, p. 2893-2900.

Research output: Contribution to journalArticle

Elgenedy, Mohamed A. ; Darwish, Ahmed ; Ahmed, Shehab ; Williams, Barry W. / A Modular Multilevel-Based High-Voltage Pulse Generator for Water Disinfection Applications. In: IEEE Transactions on Plasma Science. 2016 ; Vol. 44, No. 11. pp. 2893-2900.
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