Modular, Compact HV-Capacitor Charger

Michael Giesselmann, Travis T. Vollmer, Larry L. Altgilbers

Research output: Contribution to conferencePaperpeer-review


We are reporting on a new compact high power capacitor charger with modular topology for rep. rated High Power Microwave generators and other Pulsed Power Applications. The charger is capable of using a number of synchronized H-Bridge inverters feeding into a common transformer. The common transformer uses litz wire windings [1] and a nano-crystalline core to reduce losses and AC impedance. The H-Bridge inverter modules are individually controlled using peak current mode control which assures proper current sharing and protects the H-Bridge modules from overload while achieving the maximum current handling capacity. To assure stability of the current loops for peak current mode control, slope compensation [2] is used. Major advancements over previous designs [4] are the ability to use multiple H-Bridge inverters with proper synchronization, improved efficiency through advanced transformer design and improved current mode control.
Original languageEnglish
StatePublished - May 2010


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