A new 7L-PUC multi-cells modular multilevel converter for AC-AC and AC-DC applications

In this paper, a new cell based Modular Multilevel Converter (MMC) for AC-AC and AC-DC applications is presented. The new topology makes use of an efficient Packed U-Cells (PUC) structure to form the Multi-Cells Modular Multilevel Converters (M3C). It is a member of MMC root family, with extended operational capability covering therefore AC-AC and AC-DC modes of operation. A dynamic model of the PUC and the single phase M3C will be used along with predictive control method to validate the effectiveness of different operation modes of the converter.

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