Voltage fluctuation suppression method of floating capacitors in a new modular multilevel converter

@article{Wang2011VoltageFS,
  title={Voltage fluctuation suppression method of floating capacitors in a new modular multilevel converter},
  author={Kui Wang and Yongdong Li and Zedong Zheng and Lie Xu},
  journal={2011 IEEE Energy Conversion Congress and Exposition},
  year={2011},
  pages={2072-2078}
}
Modular multilevel converter (MMC) is a newly emerging multilevel topology for high power applications in recent years. The voltage fluctuation problem of a new MMC topology is studied in this paper. In order to suppress the voltage fluctuation of the floating capacitors, a control method is proposed by injecting high frequency zero-sequence voltage and phase-to-phase circulating currents. It can be used to drive an induction motor with pump/blower-like load at low speed and improve the… CONTINUE READING
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