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Quasi-Z-Source Inverter-Based Photovoltaic Power System Modeling for Grid Stability Studies

Author

Listed:
  • Lluís Monjo

    (Department of System Engineering and Design, Universitat Jaume I, Av. Vicent sos Baynat s/n, 12071 Castelló de la Plana, Spain)

  • Luis Sainz

    (Department of Electrical Engineering (ETSEIB—UPC), Universitat Politècnica de Catalunya, Av. Diagonal 647, 08028 Barcelona, Spain)

  • Juan José Mesas

    (Department of Electrical Engineering (EEBE—UPC), Universitat Politècnica de Catalunya, Av. Eduard Maristany 16, 08019 Barcelona, Spain)

  • Joaquín Pedra

    (Department of Electrical Engineering (ETSEIB—UPC), Universitat Politècnica de Catalunya, Av. Diagonal 647, 08028 Barcelona, Spain)

Abstract

Quasi-Z-source inverters (qZSIs) are becoming a powerful power conversion technology in photovoltaic (PV) power systems because they allow energy power conversion in a single stage operation. However, they can cause system resonances and reduce system damping, which may lead to instabilities. These stability problems are well known in grid-connected voltage source converter systems but not in quasi-Z-source inverter (qZSI)-based PV power systems. This paper contributes with Matlab/Simulink and PSCAD/EMTDC models of qZSI-based PV power systems to analyze transient interactions and stability problems. These models consider all power circuits and control blocks of qZSI-based PV power systems and can be used in sensitivity studies on the influence of system parameters on stability. PV power system stability is assessed from the proposed models. The causes of instabilities are analyzed from numerical simulations and possible solutions are proposed.

Suggested Citation

  • Lluís Monjo & Luis Sainz & Juan José Mesas & Joaquín Pedra, 2021. "Quasi-Z-Source Inverter-Based Photovoltaic Power System Modeling for Grid Stability Studies," Energies, MDPI, vol. 14(2), pages 1-16, January.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:2:p:508-:d:483114
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    References listed on IDEAS

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    1. Serhii Stepenko & Oleksandr Husev & Dmitri Vinnikov & Carlos Roncero-Clemente & Sergio Pires Pimentel & Elena Santasheva, 2019. "Experimental Comparison of Two-Level Full-SiC and Three-Level Si–SiC Quasi-Z-Source Inverters for PV Applications," Energies, MDPI, vol. 12(13), pages 1-17, June.
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    Cited by:

    1. Rafael Santos & Marcus V. M. Rodrigues & Luis De Oro Arenas & Flávio A. S. Gonçalves, 2023. "A Comprehensive Small-Signal Model Formulation and Analysis for the Quasi-Y Impedance-Source Inverter," Energies, MDPI, vol. 16(13), pages 1-24, June.
    2. Matija Bubalo & Mateo Bašić & Dinko Vukadinović & Ivan Grgić, 2023. "Hybrid Wind-Solar Power System with a Battery-Assisted Quasi-Z-Source Inverter: Optimal Power Generation by Deploying Minimum Sensors," Energies, MDPI, vol. 16(3), pages 1-24, February.
    3. Abderahmane Abid & Abualkasim Bakeer & Laid Zellouma & Mansour Bouzidi & Abderezak Lashab & Boualaga Rabhi, 2023. "Low Computational Burden Predictive Direct Power Control of Quasi Z-Source Inverter for Grid-Tied PV Applications," Sustainability, MDPI, vol. 15(5), pages 1-20, February.
    4. Ivan Grgić & Dinko Vukadinović & Mateo Bašić & Matija Bubalo, 2022. "Photovoltaic System with a Battery-Assisted Quasi-Z-Source Inverter: Improved Control System Design Based on a Novel Small-Signal Model," Energies, MDPI, vol. 15(3), pages 1-29, January.
    5. Truong-Duy Duong & Minh-Khai Nguyen & Tan-Tai Tran & Dai-Van Vo & Young-Cheol Lim & Joon-Ho Choi, 2022. "Topology Review of Three-Phase Two-Level Transformerless Photovoltaic Inverters for Common-Mode Voltage Reduction," Energies, MDPI, vol. 15(9), pages 1-18, April.
    6. Lluís Monjo & Luis Sainz & Juan José Mesas & Joaquín Pedra, 2021. "State-Space Model of Quasi-Z-Source Inverter-PV Systems for Transient Dynamics Studies and Network Stability Assessment," Energies, MDPI, vol. 14(14), pages 1-15, July.

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