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A Universal Mathematical Model of Modular Multilevel Converter with Half-Bridge

Author

Listed:
  • Ming Liu

    (College of Electrical Engineering, Guizhou University, Guiyang 550025, China
    Department of Mechanical Engineering, Guizhou College of Electronic Science and Technology, Guian 550003, China)

  • Zetao Li

    (College of Electrical Engineering, Guizhou University, Guiyang 550025, China
    Guizhou Provincial Key Laboratory of Internet + Intelligent Manufacturing, Guiyang 550025, China)

  • Xiaoliu Yang

    (College of Electrical Engineering, Guizhou University, Guiyang 550025, China)

Abstract

Modular multilevel converters (MMCs) play an important role in the power electronics industry due to their many advantages, such as modularity and reliability. In the current research, the simulation method is used to study the system. However, with the increasing number of sub-modules (SMs), it is difficult to model and simulate the system. In order to overcome these difficulties, this paper presents a universal mathematical model (UMM) of MMC using half-bridge cells as SMs. The UMM is a full-scale model with switching state, capacitance, inductance, and resistance characteristics. This method can calculate any number of SMs, and it does not need to build a simulation model (SIM) of physical MMC—in particular, parametric design can be realized. Compared with the SIM, the accuracy of the proposed UMM is verified, and the computational efficiency of the UMM is 8.7 times higher than the simulation method. Finally, by utilizing the proposed UMM method, the influence of the parameters of MMCs is studied, including the arm induction, SM capacitance, SM number, and output current/voltage total harmonic distortion (THD) based on the UMM in the paper. The results offer an engineering insight to optimize the design of MMCs.

Suggested Citation

  • Ming Liu & Zetao Li & Xiaoliu Yang, 2020. "A Universal Mathematical Model of Modular Multilevel Converter with Half-Bridge," Energies, MDPI, vol. 13(17), pages 1-18, August.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:17:p:4464-:d:405893
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    References listed on IDEAS

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    1. Ming Liu & Zetao Li & Xiaoliu Yang, 2020. "Tracking Control of Modular Multilevel Converter Based on Linear Matrix Inequality without Coordinate Transformation," Energies, MDPI, vol. 13(8), pages 1-15, April.
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    Cited by:

    1. Roberto Zanasi & Davide Tebaldi, 2021. "Modeling Control and Robustness Assessment of Multilevel Flying-Capacitor Converters," Energies, MDPI, vol. 14(7), pages 1-40, March.
    2. Murthy Priya & Pathipooranam Ponnambalam, 2022. "Circulating Current Control of Phase-Shifted Carrier-Based Modular Multilevel Converter Fed by Fuel Cell Employing Fuzzy Logic Control Technique," Energies, MDPI, vol. 15(16), pages 1-26, August.
    3. Mario Lopez & Hendrik Fehr & Marcelo A. Perez & Albrecht Gensior, 2021. "Pareto Frontier of the Arm Energy Ripple and the Conduction Losses of a Modular Multilevel Converter," Energies, MDPI, vol. 14(2), pages 1-20, January.
    4. Chang-Hwan Park & In-Kyo Seo & Belete Belayneh Negesse & Jong-su Yoon & Jang-Mok Kim, 2021. "A Study on Common Mode Voltage Reduction Strategies According to Modulation Methods in Modular Multilevel Converter," Energies, MDPI, vol. 14(6), pages 1-21, March.
    5. Corentin Darbas & Jean-Christophe Olivier & Nicolas Ginot & Frédéric Poitiers & Christophe Batard, 2021. "Cascaded Smart Gate Drivers for Modular Multilevel Converters Control: A Decentralized Voltage Balancing Algorithm," Energies, MDPI, vol. 14(12), pages 1-27, June.

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