Title :
Performance evaluation of pulse compressor based modulators with very fast rise times for plasma channel drilling
Author :
Hobejogi, Tonis ; Biela, Juergen
Author_Institution :
Lab. for High Power Electron. Syst., ETH Zurich, Zurich, Switzerland
Abstract :
In this paper, limitations of a compact and durable solid state modulator, using a 4.5kV IGBT in combination with a pulse compression circuit are evaluated. The investigated modulator utilizes two separate paths-one for ignition voltage and one for high currents. The ignition voltage is generated with a pulse compression circuit based on saturable transformers, which is used to charge a series capacitor. After saturation, the capacitor is connected to the output. Parasitics have been estimated in order to find an optimized modulator configuration. Measurement results for validating the models as well as the simulation performance are presented. Main limitation factors are described and possible solutions discussed.
Keywords :
drilling; insulated gate bipolar transistors; modulators; pulse circuits; pulse compression; pulse modulation; pulsed power supplies; IGBT; durable solid state modulator; ignition voltage; optimized modulator configuration; plasma channel drilling; pulse compression circuit; pulse compressor based modulators; saturable transformers; series capacitor; very fast rise times; voltage 4.5 kV; Capacitance; Capacitors; Circuit faults; Inductance; Modulation; Pulse transformers; Windings;
Conference_Titel :
Pulsed Power Conference (PPC), 2013 19th IEEE
Conference_Location :
San Francisco, CA
DOI :
10.1109/PPC.2013.6627426
