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AuthorElgenedy M.A.
AuthorMassoud A.M.
AuthorAhmed S.
AuthorWilliams B.W.
AuthorMcDonald J.R.
Available date2020-04-05T10:53:20Z
Publication Date2019
Publication NameIEEE Transactions on Power Electronics
ResourceScopus
ISSN8858993
URIhttp://dx.doi.org/10.1109/TPEL.2019.2899974
URIhttp://hdl.handle.net/10576/13804
AbstractIn order to overcome the limitations of the existing classical and solid-state Marx pulse generators, this paper proposes a new modular multilevel voltage-boosting Marx pulse generator (BMPG). The proposed BMPG has hardware features that allow modularity, redundancy, and scalability as well as operational features that alleviate the need of series-connected switches and allows generation of a wide range of pulse waveforms. In the BMPG, a controllable, low-voltage input boost converter supplies, via directing/blocking (D/B) diodes, two arms of a series modular multilevel converter half-bridge sub-modules (HB-SMs). At start up, all the arm's SM capacitors are resonantly charged in parallel from 0 V, simultaneously via directing diodes, to a voltage in excess of the source voltage. After the first pulse delivery, the energy of the SM capacitors decreases due to the generated pulse. Then, for continuous operation without fully discharging the SM capacitors or having a large voltage droop as in the available Marx generators, the SM capacitors are continuously recharged in parallel, to the desired boosted voltage level. Because all SMs are parallelly connected, the boost converter duty ratio is controlled by a single voltage measurement at the output terminals of the boost converter. Due to the proposed SMs structure and the utilization of D/B diodes, each SM capacitor is effectively controlled individually without requiring a voltage sensor across each SM capacitor. Generation of the commonly used pulse waveforms in electroporation applications is possible, while assuring balanced capacitors, hence SM voltages. The proposed BMPG has several topological variations such as utilizing a buck-boost converter at the input stage and replacing the HB-SM with full-bridge SMs. The proposed BMPG topology is assessed by simulation and scaled-down proof-of-concept experimentation to explore its viability for electroporation applications. - 1986-2012 IEEE.
SponsorManuscript received June 12, 2018; revised October 23, 2018 and December 29, 2018; accepted February 5, 2019. Date of publication February 18, 2019; date of current version August 29, 2019. This work was supported by the Qatar National Research Fund (a member of the Qatar Foundation) under NPRP Grant 7-203-2-097. Recommended for publication by Associate Editor J. Clare. (Corresponding author: Mohamed A. Elgenedy.) M. A. Elgenedy is with the Department of Electronic and Electrical Engineering, University of Strathclyde, Glasgow G1 1RD, U.K., and also with the Department of Electrical Engineering, Faculty of Engineering, Alexandria University, Alexandria 21544, Egypt (e-mail:,mohamed.elgenedy@strath.ac.uk).
Languageen
PublisherInstitute of Electrical and Electronics Engineers Inc.
SubjectBoost
buck-boost
electroporation
high voltage (HV)
Marx generator
modular multilevel converter (MMC)
pulse generator (PG)
pulsed electric field
voltage boosting
TitleA Modular Multilevel Voltage-Boosting Marx Pulse-Waveform Generator for Electroporation Applications
TypeArticle
Pagination10575-10589
Issue Number11
Volume Number34


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