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A Switched Quasi-Z-Source Inverter with Continuous Input Currents

Author

Listed:
  • Jing Yuan

    (Department of Energy Technology, Aalborg University, 9220 Aalborg, Denmark)

  • Yongheng Yang

    (Department of Energy Technology, Aalborg University, 9220 Aalborg, Denmark)

  • Frede Blaabjerg

    (Department of Energy Technology, Aalborg University, 9220 Aalborg, Denmark)

Abstract

Impedance source converters as single-stage power conversion alternatives can boost and regulate the output voltages of renewable energy sources. Nevertheless, they, also known as Z-source inverters (ZSIs), still suffer from limited voltage gains and higher stresses across the components. To tackle such issues, extra diodes, passive components, and active switches can be utilized in the basic ZSIs. In this paper, a modified switched-quasi-Z-source inverter (S-qZSI) is proposed, which features continuous input currents and high boosting capability to boost output voltage by minor modifications of a prior-art topology. Furthermore, the voltage stress of the active switches is reduced, which contributes to a lower cost. The operation principles are discussed comprehensively. The performance of the proposed ZSI in terms of conversion ratio, voltage gain, and stresses on the power switches and capacitors is benchmarked with selected ZSIs. Finally, simulations and experimental tests substantiate the theoretical analysis and superior performance.

Suggested Citation

  • Jing Yuan & Yongheng Yang & Frede Blaabjerg, 2020. "A Switched Quasi-Z-Source Inverter with Continuous Input Currents," Energies, MDPI, vol. 13(6), pages 1-12, March.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:6:p:1390-:d:333316
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    References listed on IDEAS

    as
    1. Shahin Honarmand & Amirhossein Rajaei & Mahdi Shahparasti & Alvaro Luna & Edris Pouresmaeil, 2019. "A Modified Partial Power structure for Quasi Z-Source Converter to Improve Voltage Gain and Power Rating," Energies, MDPI, vol. 12(11), pages 1-17, June.
    2. 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.
    3. Yifan Yu & Qianfan Zhang & Bin Liang & Xiaofei Liu & Shumei Cui, 2011. "Analysis of a Single-Phase Z-Source Inverter for Battery Discharging in Vehicle to Grid Applications," Energies, MDPI, vol. 4(12), pages 1-12, December.
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    Cited by:

    1. Sherif M. Dabour & Ahmed A. Aboushady & I. A. Gowaid & Mohamed. A. Elgenedy & Mohamed E. Farrag, 2022. "Performance Analysis and Evaluation of Multiphase Split-Source Inverters," Energies, MDPI, vol. 15(22), pages 1-20, November.
    2. Jing Yuan & Yongheng Yang & Ping Liu & Yanfeng Shen & Frede Blaabjerg, 2020. "Modified Impedance-Source Inverter with Continuous Input Currents and Fault-Tolerant Operations," Energies, MDPI, vol. 13(13), pages 1-16, July.
    3. de Oliveira-Assis, Lais & Soares-Ramos, Emanuel P.P. & Sarrias-Mena, Raúl & García-Triviño, Pablo & González-Rivera, Enrique & Sánchez-Sainz, Higinio & Llorens-Iborra, Francisco & Fernández-Ramírez, L, 2022. "Simplified model of battery energy-stored quasi-Z-source inverter-based photovoltaic power plant with Twofold energy management system," Energy, Elsevier, vol. 244(PA).
    4. Chuanyu Zhang & Chuanxu Cao & Ruiqi Chen & Jiahui Jiang, 2023. "Three-Leg Quasi-Z-Source Inverter with Input Ripple Suppression for Renewable Energy Application," Energies, MDPI, vol. 16(11), pages 1-28, May.
    5. García-Triviño, Pablo & Sarrias-Mena, Raúl & García-Vázquez, Carlos A. & Leva, Sonia & Fernández-Ramírez, Luis M., 2023. "Optimal online battery power control of grid-connected energy-stored quasi-impedance source inverter with PV system," Applied Energy, Elsevier, vol. 329(C).

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