A modular multilevel based high-voltage pulse generator for water disinfection applications

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Elgenedy, Mohamed A. and Badawy, Ahmed and Ahmed, Shehab and Williams, Barry W. (2016) A modular multilevel based high-voltage pulse generator for water disinfection applications. IEEE Transactions on Plasma Science. ISSN 1939-9375 (https://doi.org/10.1109/TPS.2016.2610462)

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Abstract

The role of irreversible electroporation using pulsed electric field (PEF) 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 H-bridge modular multilevel converter cells. The rectangular pulse characteristics can be controlled via a software controller without any physical changes in power topology. The converter is capable of generating both bipolar and monopolar HV pulses with micro-second pulse durations at a high 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.

ORCID iDs

Elgenedy, Mohamed A. ORCID logoORCID: https://orcid.org/0000-0002-5629-5616, Badawy, Ahmed, Ahmed, Shehab and Williams, Barry W.;
  • Item type:Article
    ID code:57814
    Dates:
    Date
    Event
    28 September 2016
    Published
    28 September 2016
    Published Online
    5 September 2016
    Accepted
    Notes:© 2016 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
    Subjects:Technology > Electrical engineering. Electronics Nuclear engineering
    Department:Faculty of Engineering > Electronic and Electrical Engineering
    Depositing user: Pure Administrator
    Date deposited:15 Sep 2016 14:42
    Last modified:16 Dec 2024 01:46
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/57814
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