8-Stage Pulse Generator for Bipolar Ground-Symmetric Operation

Konferenz: PCIM Europe 2019 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
07.05.2019 - 09.05.2019 in Nürnberg, Deutschland

Tagungsband: PCIM Europe 2019

Seiten: 7Sprache: EnglischTyp: PDF

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Sack, Martin; Herzog, Dennis; Hochberg, Martin; Frey, Wolfgang; Mueller, Georg (Karlsruhe Institute of Technology, Germany)

For laboratory-scale experiments on microbial decontamination of liquids by means of pulsed electric fields an eight-stage pulse generator has been developed and tested. The generator delivers a rectangular voltage with adjustable amplitude of up to 8 kV and varying polarity into a resistive load with a resistance ranging from approximately 50 Ω down to approximately 14 Ω. The rise time of voltage and current is less than 150 ns. The pulse length is adjustable between approximately 1 mus and 10 mus. For ground-symmetric operation the generator is connected to ground at its center. The paper describes selected design details and presents the results of first tests.