Title :
Rapid Capacitor Chargers for Rep-Rated Operation of Low-Inductance Compact Marx Generators
Author :
Giesselmann, M. ; Hale, B. Mc ; Neuber, A.
Author_Institution :
Dept. of Electr. & Comput. Eng., Texas Tech. Univ., Lubbock, TX
Abstract :
We designed and tested several rapid capacitor chargers for rep-rated operation of low-inductance, compact Marx generators with rep-rates ranging from 10 Hz to 100 Hz. All chargers are designed to be packaged in cylindrical volumes with inside diameters in the range of 5 in-12 in. Our capacitor chargers are based on H-Bridge inverters using ultra fast 600 V class IGBTs. The high voltage is obtained by driving step-up transformers with nano-crystalline cores at 30 kHz. These chargers are capable of average DC output power levels of more than 5 kW for short time operation, during which the thermal inertia of the IGBT assembly provides effective cooling (up to seconds). To achieve reliable rep-rated operation of the chargers, we developed HV feedback sensors to monitor the charging process and solid state Marx-style trigger generators to command trigger the discharge of the main Marx
Keywords :
feedback; insulated gate bipolar transistors; invertors; power transformers; power transistors; pulse generators; pulsed power supplies; 10 to 100 Hz; 30 kHz; 5 to 12 in; 600 V; H-Bridge inverters; HV feedback sensors; IGBT; charging process; cooling; driving step-up transformers; low-inductance; nanocrystalline cores; rapid capacitor chargers; rep-rated operation; solid state Marx-style trigger generators; thermal inertia; Assembly; Capacitors; Cooling; Insulated gate bipolar transistors; Inverters; Packaging; Power generation; State feedback; Testing; Transformer cores;
Conference_Titel :
Power Modulator Symposium, 2006. Conference Record of the 2006 Twenty-Seventh International
Conference_Location :
Arlington, VA
Print_ISBN :
1-4244-0018-X
Electronic_ISBN :
1-4244-0019-8
DOI :
10.1109/MODSYM.2006.365321
