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Integration of Photovoltaic Power Units to Power Distribution System through Modular Multilevel Converter

Author

Listed:
  • Seyed Mehdi Hakimi

    (Department of Electrical Engineering, Damavand Branch, Islamic Azad University, Damavand 39718-78911, Iran)

  • Amin Hajizadeh

    (Department of Energy Technology, Aalborg University, 6700 Esbjerg, Denmark)

Abstract

With the growing of using photovoltaic (PV) units in power distribution systems, the role of high-performance power electronic converters is increasing. In this paper, modelling and control of Modular Multilevel Converter (MMC) are addressed for grid integration of PV units. Designing a proper controller for MMC is crucial during faulty conditions to make the converter stable and provide proper dynamic performance. To achieve this goal, a dynamic model of MMC is presented which it includes symmetrical components of voltage and current. Then, adaptive robust current controllers are developed based on sliding mode and fuzzy controllers for MMC and then the robustness and stability of the controllers are proved by the Lyapunov theory. To implement the proposed controllers under unbalanced grid voltage fault, positive and negative sequences current controllers are implemented to compensate the effect of grid voltage fault and load power variation. Finally, numerical results are shown to evaluate the performance of MMC. In the end, the experimental results are given to prove the controller performance. The outcome indicates that the proposed current controllers are more effective under voltage disturbance conditions and could satisfy the stability of MMC.

Suggested Citation

  • Seyed Mehdi Hakimi & Amin Hajizadeh, 2018. "Integration of Photovoltaic Power Units to Power Distribution System through Modular Multilevel Converter," Energies, MDPI, vol. 11(10), pages 1-13, October.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:10:p:2753-:d:175604
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    References listed on IDEAS

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    1. 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.
    2. 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.
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    Cited by:

    1. 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.
    2. Khlid Ben Hamad & Doudou N. Luta & Atanda K. Raji, 2021. "A Grid-Tied Fuel Cell Multilevel Inverter with Low Harmonic Distortions," Energies, MDPI, vol. 14(3), pages 1-24, January.
    3. Jin Zhu & Tongzhen Wei & Qunhai Huo & Jingyuan Yin, 2018. "A Full-bridge Director Switches based Multilevel Converter with DC Fault Blocking Capability and Its Predictive Control Strategy," Energies, MDPI, vol. 12(1), pages 1-22, December.

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