Research and Analysis of Equivalent Circuit Model for Core Snubber

Abstract The ion source is the key to NBI. It very sensitive overvoltage and overcurrent, breakdown frequently occurs between acceleration grid. core snubber most suitable surge suppression device achieve DC fault protection. This paper introduces some basic concepts, comparing snubber’s material properties important parameters. also concept of an equivalent circuit model for snubber, including derivation process theoretical analysis. Then characteristics analysis are introduced. Finally, this looks forward future research direction snubber.