A Model for electrical fast transient analyses of the ITER NBI power supplies and the MAMuG accelerator

Bigi, M.*; De Lorenzi, A.*; Grando, L.*; Watanabe, Kazuhiro; Yamamoto, Masanori

Fusion Engineering and Design, 84(2-6), p.446 - 450, 2009/06

https://doi.org/10.1016/j.fusengdes.2009.02.003

The ITER NBI requires a five stage -1 MV power supply system under strict load protection for electric breakdowns. A circuit model of the power supply with MAMuG accelerator has been developed for the simulation of fast transients related to the accelerator breakdowns. The complex inductive and capacitive couplings were assessed by calculations with finite element techniques. The circuit model, developed to address a number of design issues requiring simulations at system level, is now ready for use - the optimization of passive protections being the most significant application.