Compact, high power capacitor charger

M. Giesselmann, T. Heeren, T. Helle

Research output: Contribution to conferencePaper

12 Scopus citations

Abstract

We are developing compact, high-power chargers for rapid charging of energy storage capacitors. The main application is presently rapid charging of the capacitors inside of compact Marx generators for rep-rated operation. Compact Marx generators produce output pulses with amplitudes above 300kV with ns or sub-ns rise-times. A typical application is the generation of High Power Microwaves. Initially all energy storage capacitors in a Marx generator are charged in parallel. During the so-called erection cycle, the capacitors are connected in series. The charging voltage in the parallel configuration is around 40-50kV. The input voltage of our charger is in the range of several hundred volts. Rapid charging of the capacitors in the parallel configuration will enable a high pulse repetition-rate of the compact Marx generator. The high power charger uses state-of-the-art IGBTs (Isolated Gate Bipolar Transistors) in an H-Bridge topology and a compact, high frequency transformer. The IGBTs and the associated controls are packaged for minimum weight and. maximum power density. The packaging and device selection makes use of burst mode operation (thermal inertia) of the charger. The present charger is considerably smaller than the one presented in [1].

Original languageEnglish
Pages707-710
Number of pages4
StatePublished - 2003
Event14th IEEE International Pulsed Power Conference - Dallas, TX, United States
Duration: Jun 15 2003Jun 18 2003

Conference

Conference14th IEEE International Pulsed Power Conference
CountryUnited States
CityDallas, TX
Period06/15/0306/18/03

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    Giesselmann, M., Heeren, T., & Helle, T. (2003). Compact, high power capacitor charger. 707-710. Paper presented at 14th IEEE International Pulsed Power Conference, Dallas, TX, United States.