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Jin Li,Jinjun Liu,Dushan Boroyevich,Paolo Mattavelli,Yaosuo Xue 전력전자학회 2011 ICPE(ISPE)논문집 Vol.2011 No.5
This paper analyzes and compares three-level diode neutral-point-clamped zero-current-transition (DNPC-3L ZCT) inverter and three-level active neutral-point-clamped zero-current-transition (ANPC-3L ZCT) inverter. The two multilevel soft-switching topologies are compared with respect to switching energy, volume, as well as parasitic inductance influence. The comparison results reveal that the ANPC-3L ZCT inverter takes advantage over DNPC-3L ZCT inverter with lower volume, lower switching losses, and less sensitivity to parasitic inductance. 80 kVA half-bridge prototypes of the two soft-switching topologies are implemented and tested; the experimental results verify the analysis.