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Multi-Level Multi-Input Converter for Hybrid Renewable Energy Generators

Author

Listed:
  • Salvatore Foti

    (Dipartimento di Ingegneria, University of Messina, 98166 Messina, Italy)

  • Antonio Testa

    (Dipartimento di Ingegneria, University of Messina, 98166 Messina, Italy)

  • Salvatore De Caro

    (Dipartimento di Ingegneria, University of Messina, 98166 Messina, Italy)

  • Luigi Danilo Tornello

    (Dipartimento di Ingegneria Elettrica Elettronica e Informatica, University of Catania, 95125 Catania, Italy)

  • Giacomo Scelba

    (Dipartimento di Ingegneria Elettrica Elettronica e Informatica, University of Catania, 95125 Catania, Italy)

  • Mario Cacciato

    (Dipartimento di Ingegneria Elettrica Elettronica e Informatica, University of Catania, 95125 Catania, Italy)

Abstract

A three-phase multi-level multi-input power converter topology is presented for grid-connected applications. It encompasses a three-phase transformer that is operated on the primary side in an open-end winding configuration. Thus, the primary winding is supplied on one side by a three-phase N-level neutral point clamped inverter and, on the other side, by an auxiliary two-level inverter. A key feature of the proposed approach is that the N-level inverter is able to perform independent management of N − 1 input power sources, thus avoiding the need for additional dc/dc power converters in hybrid multi-source systems. Moreover, it can manage an energy storage system connected to the dc-bus of the two-level inverter. The N-level inverter operates at a low switching frequency and can be equipped with very low on-state voltage drop Insulated-Gate Bipolar Transistor (IGBT) devices, while the auxiliary inverter is instead operated at low voltage according to a conventional high-frequency two-level Pulse Width Modulation (PWM) technique and can be equipped with very low on-state resistance Metal-Oxide-Semiconductor Field-Effect Transistor (MOSFET) devices. Simulations and experimental results confirm the effectiveness of the proposed approach and its good performance in terms of grid current harmonic content and overall efficiency.

Suggested Citation

  • Salvatore Foti & Antonio Testa & Salvatore De Caro & Luigi Danilo Tornello & Giacomo Scelba & Mario Cacciato, 2021. "Multi-Level Multi-Input Converter for Hybrid Renewable Energy Generators," Energies, MDPI, vol. 14(6), pages 1-19, March.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:6:p:1764-:d:522072
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    References listed on IDEAS

    as
    1. Eltaib Abdeen & Mahmoud A. Gaafar & Mohamed Orabi & Emad M. Ahmed & Abdelali El Aroudi, 2019. "Multi-Input Ćuk-Derived Buck-Boost Voltage Source Inverter for Photovoltaic Systems in Microgrid Applications," Energies, MDPI, vol. 12(10), pages 1-17, May.
    2. Salvatore Foti & Giacomo Scelba & Antonio Testa & Angelo Sciacca, 2019. "An Averaged-Value Model of an Asymmetrical Hybrid Multi-Level Rectifier," Energies, MDPI, vol. 12(4), pages 1-19, February.
    3. Salvatore Foti & Antonio Testa & Salvatore De Caro & Tommaso Scimone & Giacomo Scelba & Giuseppe Scarcella, 2019. "Multi-Level Open End Windings Multi-Motor Drives," Energies, MDPI, vol. 12(5), pages 1-19, March.
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    Cited by:

    1. Mohammad Junaid Khan & Lini Mathew & Majed A. Alotaibi & Hasmat Malik & Mohammed E. Nassar, 2022. "Fuzzy-Logic-Based Comparative Analysis of Different Maximum Power Point Tracking Controllers for Hybrid Renewal Energy Systems," Mathematics, MDPI, vol. 10(3), pages 1-28, February.
    2. Massimiliano Luna, 2022. "High-Efficiency and High-Performance Power Electronics for Power Grids and Electrical Drives," Energies, MDPI, vol. 15(16), pages 1-6, August.

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