Conference Paper Which is more suitable for MMCC-based medium-voltage motor drives, a DSCC inverter or a TSBC converter?

岡﨑, 佑平  ,  Okazaki, Yuhei  ,  川村, 弥  ,  Kawamura, Wataru  ,  萩原, 誠  ,  Hagiwara, Makoto  ,  赤木, 泰文  ,  Akagi, Hirofumi

This paper provides theoretical, numerical, and experimental comparisons in electrical-drive performance between a double-star chopper-cells (DSCC) inverter and a triple-star 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.

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