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Improved Predictive Control for an Asymmetric Multilevel Converter for Photovoltaic Energy

Author

Listed:
  • Patricio Gaisse

    (Engineering Systems Doctoral Program, Faculty of Engineering, University of Talca, Curicó 3344158, Chile
    These authors contributed equally to this work.)

  • Javier Muñoz

    (Department of Electrical Engineering, Faculty of Engineering, Universidad de Talca, Curicó 3344158, Chile
    These authors contributed equally to this work.
    Current address: Faculty of Engineering, Universidad de Talca, Merced 437, Curicó.)

  • Ariel Villalón

    (Engineering Systems Doctoral Program, Faculty of Engineering, University of Talca, Curicó 3344158, Chile
    These authors contributed equally to this work.)

  • Rodrigo Aliaga

    (Engineering Systems Doctoral Program, Faculty of Engineering, University of Talca, Curicó 3344158, Chile)

Abstract

This article proposes a 27-level asymmetric cascade H-bridge multilevel topology for photovoltaic applications, which considers a predictive control strategy that allows minimization of the commutations of the converter. This proposal ensures a highly sinusoidal and stable photovoltaic injection when there are solar irradiance disturbances, generating a low distortion in the current waveform and low switching losses. To validate the performance of the control and the proposed topology, the dynamic model of the alternating current (AC) and direct current (DC) side system is first obtained, which is checked by computational simulations. Subsequently, the implementation of a master–slave control is carried out, focused on the control of DC voltage and AC current. The proposal is simulated, and the total harmonic distortion (THD) is obtained in the voltage and current waveforms. Undesired commutations, typical of the predictive control, are eliminated in the AC voltage waveform, and a proper DC voltage tracking is achieved for the high-power cell. In order to demonstrate the performance of the proposed control strategy, a low-power proof-of-concept prototype is implemented, in which the energy is injected to the grid, under the event of solar irradiance disturbances (with DC control).Then, the undesired switching in the main cell is eliminated, generating THDs in the voltage and current signal of 7.76% and 2.65%, respectively.

Suggested Citation

  • Patricio Gaisse & Javier Muñoz & Ariel Villalón & Rodrigo Aliaga, 2020. "Improved Predictive Control for an Asymmetric Multilevel Converter for Photovoltaic Energy," Sustainability, MDPI, vol. 12(15), pages 1-22, August.
    • Handle: RePEc:gam:jsusta:v:12:y:2020:i:15:p:6204-:d:393098
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    References listed on IDEAS

    as
    1. Juan R. Rodriguez-Rodríguez & Vicente Venegas-Rebollar & Edgar L. Moreno-Goytia, 2015. "Single DC-Sourced 9-level DC/AC Topology as Transformerless Power Interface for Renewable Sources," Energies, MDPI, vol. 8(2), pages 1-18, February.
    2. Ariel Villalón & Marco Rivera & Yamisleydi Salgueiro & Javier Muñoz & Tomislav Dragičević & Frede Blaabjerg, 2020. "Predictive Control for Microgrid Applications: A Review Study," Energies, MDPI, vol. 13(10), pages 1-32, May.
    3. Concettina Buccella & Maria Gabriella Cimoroni & Carlo Cecati, 2020. "General Formula for SHE Problem Solution," Energies, MDPI, vol. 13(14), pages 1-16, July.
    4. Azuwien Aida Bohari & Hui Hwang Goh & Agustiono Kurniawan Tonni & Sze Sing Lee & Sy Yi Sim & Kai Chen Goh & Chee Shen Lim & Yi Chen Luo, 2020. "Predictive Direct Power Control for Dual-Active-Bridge Multilevel Inverter Based on Conservative Power Theory," Energies, MDPI, vol. 13(11), pages 1-14, June.
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    Citations

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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. Ignacio Torres & Javier Muñoz & Diego Rojas & Eduardo E. Espinosa, 2022. "Selective Harmonic Elimination Technique for a 27-Level Asymmetric Multilevel Converter," Energies, MDPI, vol. 15(10), pages 1-17, May.
    3. Humberto Vidal & Marco Rivera & Patrick Wheeler & Nicolás Vicencio, 2020. "The Analysis Performance of a Grid-Connected 8.2 kWp Photovoltaic System in the Patagonia Region," Sustainability, MDPI, vol. 12(21), pages 1-16, November.
    4. Maysam Abbasi & Ehsan Abbasi & Li Li & Behrouz Tousi, 2021. "Design and Analysis of a High-Gain Step-Up/Down Modular DC–DC Converter with Continuous Input Current and Decreased Voltage Stress on Power Switches and Switched-Capacitors," Sustainability, MDPI, vol. 13(9), pages 1-19, May.

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