A Modular High-Voltage Pulse-Generator with Sequential Charging for Water Treatment Applications

A. A. Elserougi, A. M. Massoud, Shehab Ahmed

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

High-voltage pulse-generators can be used effectively for bacterial decontamination in water treatment applications. Applying a pulsed electric field to the infected water sample guarantees killing of harmful germs and bacteria. In this paper, a modular high-voltage pulse-generator with sequential charging is proposed for water treatment via underwater pulsed streamer corona discharge. The proposed generator consists of series-connected modules similar to an arm of a modular multilevel converter. The modules' capacitors are charged sequentially from a relatively low-voltage dc supply, then they are connected in series and discharged into the load. Two configurations are proposed in this paper, one for low repetitive pulse rate applications, and the other for high repetitive pulse rates. In the first topology, the equivalent resistance of the infected water sample is used as a charging resistance for the generator's capacitors during the charging process. While in the second topology, the water resistance is bypassed during the charging process, and an external charging resistance with proper value is used instead. In this paper, detailed designs for the proposed pulse-generators are presented and validated by simulation results using MATLAB. A scaled down experimental setup has been built to show the viability of the proposed concept.

Original languageEnglish
Article number7372411
Pages (from-to)7898-7907
Number of pages10
JournalIEEE Transactions on Industrial Electronics
Volume63
Issue number12
DOIs
Publication statusPublished - 1 Dec 2016

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Keywords

  • Pulse generator
  • voltage multiplier
  • water treatment

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Computer Science Applications
  • Electrical and Electronic Engineering

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