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It was experimentally found that the short-circuit withstanding capability is degraded for MOSFET-mode IGBTs, whose anode efficiency is low and the ratio of electron current over hole current is greater than the mobility ratio. New destruction mechanism of MOSFET-Mode IGBT is proposed in this paper by using large scale TCAD simulations. It is found, for the first time, that current filaments are observed...
We have applied the superposition solution combined with the method of moments into electromagnetic scattering from multiple objects so far. In this paper, we apply the multilevel algorithm for superposition solution, and show some numerical results. We show that the numerical results strongly depend on the number of subgroups.
We discuss electromagnetic scattering from N-object configurations, where each object is small. We employ the superposition solution combined with method of moments. We show some numerical results, which show that the method works well and not.
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