Symmetric GTO and snubber component characterization in PWM current-source inverters

Abstract

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Novel low-loss active voltage clamp circuit for series connection of RCGCT thyristors

“…One is a protection circuit to regulate transient overvoltage resulting from induction surges or switching timing shifts during switching. In general, a CRD snubber [3] is used for this. The other is a protection circuit used to eliminate static voltage unbalance generated from leak current differentials in the switching elements connected in series.…”