Closed-Loop Discontinuous Modulation Technique for Capacitor Voltage Ripples and Switching Losses Reduction in Modular Multilevel Converters

@article{Picas2015ClosedLoopDM,
  title={Closed-Loop Discontinuous Modulation Technique for Capacitor Voltage Ripples and Switching Losses Reduction in Modular Multilevel Converters},
  author={Ricard Picas and Salvador Ceballos and Josep Pou and Jordi Zaragoza and Georgios Konstantinou and Vassilios G. Agelidis},
  journal={IEEE Transactions on Power Electronics},
  year={2015},
  volume={30},
  pages={4714-4725}
}
In this paper, a new discontinuous modulation technique is presented for the operation of the modular multilevel converter (MMC). The modulation technique is based on adding a zero sequence to the original modulation signals so that the MMC arms are clamped to the upper or lower terminals of the dc-link bus. The clamping intervals are controlled according to the absolute value of the output current to minimize the switching losses of the MMC. A significant reduction in the capacitor voltage… CONTINUE READING
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