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Real-Time Implementation of an Optimized Model Predictive Control for a 9-Level CSC Inverter in Grid-Connected Mode

Author

Listed:
  • Alamera Nouran Alquennah

    (Electronic and Communications Engineering Department, Kuwait College of Science and Technology, Kuwait City 27235, Kuwait)

  • Mohamed Trabelsi

    (Electronic and Communications Engineering Department, Kuwait College of Science and Technology, Kuwait City 27235, Kuwait)

  • Khaled Rayane

    (Department of Electrical and Computer Engineering, Texas A and M University at Qatar, Qatar Foundation, Doha 23874, Qatar)

  • Hani Vahedi

    (Ossiaco Inc., Montreal, QC H3C 2G9, Canada)

  • Haitham Abu-Rub

    (Department of Electrical and Computer Engineering, Texas A and M University at Qatar, Qatar Foundation, Doha 23874, Qatar)

Abstract

The Crossover Switches Cell (CSC) is a recent Single DC-Source Multilevel Inverter (SDCS-MLI) topology with boosting abilities. In grid-connected PV applications, the CSC should be controlled to inject a sinusoidal current to the grid with low THD% and unity power factor, while balancing the capacitor voltage around its reference. These two objectives can be met through the application of a finite control set model predictive control (FCS-MPC) method. Thus, this paper proposes a design of an optimized FCS-MPC for a 9-level grid-tied CSC inverter. The switching actions are optimized using the redundant switching states. The design is verified through simulations and real-time implementation. The presented results show that the THD% of the grid current is 1.73%, and the capacitor voltage is maintained around its reference with less than 0.5 V mean error. To test the reliability of the control design, different scenarios were applied, including variations in the control reference values as well as the AC grid voltage. The presented results prove the good performance of the designed controller in tracking the reference values and minimizing the steady-state errors.

Suggested Citation

  • Alamera Nouran Alquennah & Mohamed Trabelsi & Khaled Rayane & Hani Vahedi & Haitham Abu-Rub, 2021. "Real-Time Implementation of an Optimized Model Predictive Control for a 9-Level CSC Inverter in Grid-Connected Mode," Sustainability, MDPI, vol. 13(15), pages 1-15, July.
    • Handle: RePEc:gam:jsusta:v:13:y:2021:i:15:p:8119-:d:598089
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