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Yuhei Okazaki,Wataru Kawamura,Makoto Hagiwara,Hirofumi Akagi,Takashi Ishida,Masahiko Tsukakoshi,Ritaka Nakamura 전력전자학회 2015 ICPE(ISPE)논문집 Vol.2015 No.6
This paper provides theoretical, numerical, and experimental comparisons in electrical-drive performance between a double-star chopper-cells (DSCC) inverter and a triplestar bridge-cells (TSBC) converter. The inverter and converter are two of the most promising members of the modular multilevel cascade converter (MMCC) family. Two sets of downscaled electrical drives using the DSCC inverter and the TSBC converter are designed, constructed, and tested, along with the common three-phase four-pole induction motor rated at 380 V, 15 kW, and 50 Hz. This paper presents experimental waveforms of the electrical drives loaded with a quadratic torque-to-speed profile and at the rated torque.