A high-gain, high-voltage pulse generator using sequentially-charged modular multilevel converter sub-modules, for water disinfection applications

Elgenedy, Mohamed A. and Massoud, Ahmed M. and Ahmed, Shehab and Williams, Barry W. (2017) A high-gain, high-voltage pulse generator using sequentially-charged modular multilevel converter sub-modules, for water disinfection applications. IEEE Journal of Emerging and Selected Topics in Power Electronics. pp. 1-13. ISSN 2168-6777 (https://doi.org/10.1109/JESTPE.2017.2750244)

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Abstract

Modularity, redundancy and scalability are the key features recently sought in High-Voltage (HV) pulse generators for electroporation applications. Such features are gained by utilizing Modular Multilevel Converter (MMC) Sub-Modules (SMs). In this paper, two arms of MMC Half-Bridge SMs (HB-SMs) are utilized for generating bipolar/unipolar HV pulses for disinfection process in water treatment applications. The HB-SM capacitors are charged sequentially from a low voltage dc input source via a resistive-inductive branch and a reverse blocking switch (which is turned ON/OFF at zero voltage/current conditions). The energy losses of the proposed capacitor charging technique are established mathematically as well as the charging time per SM-capacitor. Therefore, the proposed Sequential Pulse Generator (SPG) is able to generate high repetitive pulse rates with high efficiency regardless the HV level of the pulse. Different characterizations of bipolar rectangular pulses can be generated. The proposed topology is assessed by Matlab/Simulink platform and scaled down experimentation. The results establish the viability of the SPG topology for HV pulse generation for water disinfection applications.

  • Item type:Article
    ID code:61775
    Dates:
    Date
    Event
    8 September 2017
    Published
    8 September 2017
    Published Online
    31 August 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:11 Sep 2017 13:26
    Last modified:15 Apr 2024 13:41
    URI:https://strathprints.strath.ac.uk/id/eprint/61775
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