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Efficiency Performance of 7-Level Multiplexed and 3-Level Neutral Point Clamped (NPC) Converters

Author

Listed:
  • Shafquat Hussain

    (Department of Electrical, Electronics and Telecommunication Engineering and Naval Architecture (DITEN), University of Genova, 16145 Genova, Italy)

  • Simone Cosso

    (Department of Electrical, Electronics and Telecommunication Engineering and Naval Architecture (DITEN), University of Genova, 16145 Genova, Italy)

  • Massimiliano Passalacqua

    (Department of Electrical, Electronics and Telecommunication Engineering and Naval Architecture (DITEN), University of Genova, 16145 Genova, Italy)

  • Luis Ramon Vaccaro

    (Department of Electrical, Electronics and Telecommunication Engineering and Naval Architecture (DITEN), University of Genova, 16145 Genova, Italy)

  • Andrea Formentini

    (Department of Electrical, Electronics and Telecommunication Engineering and Naval Architecture (DITEN), University of Genova, 16145 Genova, Italy)

  • Mario Marchesoni

    (Department of Electrical, Electronics and Telecommunication Engineering and Naval Architecture (DITEN), University of Genova, 16145 Genova, Italy)

Abstract

In medium-voltage AC applications, multilevel converters are essential due to their ability to achieve high efficiency and significantly reduce total harmonic distortion (THD), ensuring improved performance and power quality. This paper presents a detailed analysis of the efficiency, power loss, and THD characteristics of multiplexed multilevel converters and neutral point clamped converters. Using MATLAB ® Simulink 2024b, the switching and conduction losses of both multiplexed multilevel converters and NPC converters are calculated. The three-level NPC converter offers advantages of a simpler design, reduced component count, and cost effectiveness with the drawback of low voltage quality. Simulation results validate the THD, power losses, and efficiency for the conventional three-phase three-level NPC converter and the three-phase multiplexed multilevel converter, and a detailed comparison is performed.

Suggested Citation

  • Shafquat Hussain & Simone Cosso & Massimiliano Passalacqua & Luis Ramon Vaccaro & Andrea Formentini & Mario Marchesoni, 2025. "Efficiency Performance of 7-Level Multiplexed and 3-Level Neutral Point Clamped (NPC) Converters," Energies, MDPI, vol. 18(9), pages 1-15, April.
    • Handle: RePEc:gam:jeners:v:18:y:2025:i:9:p:2161-:d:1640706
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