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To the affections of series IGBTs operation, the working process and characteristics of two kinds of simple, reliable voltage-balancing circuits are analyzed and compared. In the case of non-synchronous of gate signal, RCD snubber can not suppress the dynamic over-voltage during the switch transients observed from the experiments. The RCD active gate control is discussed in detail includes signal...
Three-phase currents of STATCOM with conventional control strategy will be unbalanced and distorted when the STATCOM operates at the condition of non-ideal grid voltages. Special attention was paid to the influence of grid voltage quality on STATCOM current and a new control strategy was presented to counteract the influence in this paper. The unbalance and non-sine distortion of grid voltage causes...
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