High Peak Current Burst Repetitive Operation of a 125mm Thyristor
ARMY RESEARCH LAB ADELPHI MD
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Repetitive operation of symmetric 125-mm thyristors has been demonstrated under burst conditions consistent with some electric gun applications. The thyristor was produced by Silicon Power Corp. and utilizes a unique compact package that provides for double-sided cooling with a thermal resistance from junction to sink of 0.0033 KW. Single shot testing 1 was performed using a 10-m omega pulse-forming network with a total capacitance of 21 mF into a matched load to determine operational limits. Computer simulations of the temporal behavior of the device using actual current pulse shapes were consistent with the experimental results. The device operated in a satisfactory manner at 120 kA peak current. Repetition rate testing was performed under burst conditions with large voltage reversals at the end of the pulse.
- Electrical and Electronic Equipment