ABSTRACT:
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.
KEYWORDS:
1. Modular Multilevel Converter (MMC)
2. Multi-Cells Modular Multilevel Converters (M3C)
3. Packed U-Cells
4. Single phase AC-AC and AC-DC power converter
SOFTWARE: MATLAB/SIMULINK
CONCLUSION:
A new efficient multilevel cell topology
has been introduced to the M3C family. The increased cell terminal voltage
levels bring more smoothness to the arm controlled voltages, thus increasing
the voltage levels to component ratio. Wide range of operating modes were
tested, showing fast dynamic response to variations in reference signals. Model
predictive control proved effectiveness against transient output references and
kept good performance with capacitor parameter variations.
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