A step-up modular high-voltage pulse generator based on isolated input-parallel/output-series voltage-boosting modules and modular multilevel sub-modules

Darwish, Ahmed and Elgenedy, Mohamed A. and Finney, Stephen J. and Williams, Barry W. and McDonald, Jim R. (2019) A step-up modular high-voltage pulse generator based on isolated input-parallel/output-series voltage-boosting modules and modular multilevel sub-modules. IEEE Transactions on Industrial Electronics, 66 (3). pp. 2207-2216. ISSN 0278-0046 (https://doi.org/10.1109/TIE.2017.2772189)

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Abstract

Irreversible electroporation for disinfection applications involve exposing the specimen cell-membrane to a pulsed electric field in order to kill harmful microorganisms. High voltage (HV) pulses, of relatively short durations in range of few micro-seconds, are generated across the sample chamber. The HV pulse specifications such as: voltage magnitude, waveform, repetition rate, and duration differ according to the conditions of the sample being processed. This paper proposes a new step-up power electronic converter topology for generating the required HV pulses from a relatively low input voltage. The converter consists of two main stages; the first stage is responsible for boosting the input voltage to the desired level using input-parallel/output-series connected dc/dc modules while the second stage forms the required HV pulses with the proper magnitude, duration and repetition rate using modular multilevel converter sub-modules. The proposed topology is able to produce the HV pulses with controlled voltage and current stresses across the employed semiconductor switches and diodes, hence, it can be implemented with the market-available semiconductor technology. Mathematical analysis of the proposed topology is developed and MATLAB/Simulink simulation results explore operational conditions. Experimental results from a scaled-down prototype validate the functionality of the proposed system.

ORCID iDs

Darwish, Ahmed, Elgenedy, Mohamed A. ORCID logoORCID: https://orcid.org/0000-0002-5629-5616, Finney, Stephen J., Williams, Barry W. and McDonald, Jim R. ORCID logoORCID: https://orcid.org/0000-0002-7078-845X;
  • Item type:Article
    ID code:62356
    Dates:
    Date
    Event
    1 March 2019
    Published
    13 November 2017
    Published Online
    13 October 2017
    Accepted
    Notes:(c) 2017 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, 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 components 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 Nov 2017 11:25
    Last modified:11 Nov 2024 11:50
    URI:https://strathprints.strath.ac.uk/id/eprint/62356
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