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Pareto Frontier of the Arm Energy Ripple and the Conduction Losses of a Modular Multilevel Converter

Author

Listed:
  • Mario Lopez

    (Electronics Engineering Department, Universidad Técnica Federico Santa María, Valparaíso 2390123, Chile)

  • Hendrik Fehr

    (Professur Leistungselektronik, Elektrotechnisches Institut, Technische Universität Dresden, 01062 Dresden, Germany)

  • Marcelo A. Perez

    (Electronics Engineering Department, Universidad Técnica Federico Santa María, Valparaíso 2390123, Chile)

  • Albrecht Gensior

    (Professur Leistungselektronik, Elektrotechnisches Institut, Technische Universität Dresden, 01062 Dresden, Germany)

Abstract

Modular multilevel converters can achieve high power quality and voltage ratings, becoming a good alternative for high-voltage direct-current applications. However, the circulating current and capacitor voltage ripple remain significant drawbacks, mainly due to the impact on efficiency and power density. In this work, a stationary operation of a modular multilevel converter is optimized by calculating the Pareto frontier of the arm energy ripple and the conduction losses for different operating conditions. From the set of optimal solutions, the best trade-off between energy ripple and power losses can be chosen depending on the application requirements. Therefore, an optimal operating point regarding capacitor voltage ripple and circulating current was found, optimizing efficiency and allowing a reduction of capacitance, hence size and cost. The theoretical analysis and results are validated experimentally on a prototype test-bench.

Suggested Citation

  • 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.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:2:p:392-:d:479126
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    References listed on IDEAS

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    1. Anirudh Budnar Acharya & Mattia Ricco & Dezso Sera & Remus Teodorescu & Lars Einar Norum, 2019. "Arm Power Control of the Modular Multilevel Converter in Photovoltaic Applications," Energies, MDPI, vol. 12(9), pages 1-23, April.
    2. 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.
    3. Anirudh Budnar Acharya & Dezso Sera & Remus Teodorescu & Lars Einar Norum, 2020. "Modular Multilevel Converter for Photovoltaic Application with High Energy Yield under Uneven Irradiance," Energies, MDPI, vol. 13(10), pages 1-16, May.
    4. Fernando Martinez-Rodrigo & Dionisio Ramirez & Alexis B. Rey-Boue & Santiago De Pablo & Luis Carlos Herrero-de Lucas, 2017. "Modular Multilevel Converters: Control and Applications," Energies, MDPI, vol. 10(11), pages 1-26, October.
    5. Miguel Moranchel & Emilio Bueno & Inés Sanz & Francisco J. Rodríguez, 2017. "New Approaches to Circulating Current Controllers for Modular Multilevel Converters," Energies, MDPI, vol. 10(1), pages 1-20, January.
    Full references (including those not matched with items on IDEAS)

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