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Enhanced Performance Modified Discontinuous PWM Technique for Three-Phase Z-Source Inverter

Author

Listed:
  • Ahmed A. Hossameldin

    (Electrical Engineering Department, Faculty of Engineering, Alexandria University, P.O.Box 33 Alexandria, Egypt)

  • Ahmed K. Abdelsalam

    (Electrical and Control Engineering Department, College of Engineering, Arab Academy for Science and Technology (AAST), P.O.Box 1029 Alexandria, Egypt)

  • Ahmed A. Ibrahim

    (Electrical Engineering Department, Faculty of Engineering, Alexandria University, P.O.Box 33 Alexandria, Egypt)

  • Barry W. Williams

    (Electronics and Electrical Engineering Department, Faculty of Engineering, Strathclyde University, G11XW Glasgow, UK)

Abstract

Various industrial applications require a voltage conversion stage from DC to AC. Among them, commercial renewable energy systems (RES) need a voltage buck and/or boost stage for islanded/grid connected operation. Despite the excellent performance offered by conventional two-stage converter systems (dc–dc followed by dc–ac stages), the need for a single-stage conversion stage is attracting more interest for cost and size reduction reasons. Although voltage source inverters (VSIs) are voltage buck-only converters, single stage current source inverters (CSIs) can offer voltage boost features, although at the penalty of using a large DC-link inductor. Boost inverters are a good candidate with the demerit of complicated control strategies. The impedance source (Z-source) inverter is a high-performance competitor as it offers voltage buck/boost in addition to a reduced passive component size. Several pulse width modulation (PWM) techniques have been presented in the literature for three-phase Z-source inverters. Various common drawbacks are annotated, especially the non-linear behavior at low modulation indices and the famous trade-off between the operating range and the converter switches’ voltage stress. In this paper, a modified discontinuous PWM technique is proposed for a three-phase z-source inverter offering: (i) smooth voltage gain variation, (ii) a wide operating range, (iii) reduced voltage stress, and (iv) improved total harmonic distortion (THD). Simulation, in addition to experimental results at various operating conditions, validated the proposed PWM technique’s superior performance compared to the conventional PWM techniques.

Suggested Citation

  • Ahmed A. Hossameldin & Ahmed K. Abdelsalam & Ahmed A. Ibrahim & Barry W. Williams, 2020. "Enhanced Performance Modified Discontinuous PWM Technique for Three-Phase Z-Source Inverter," Energies, MDPI, vol. 13(3), pages 1-19, January.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:3:p:578-:d:313268
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    Citations

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    Cited by:

    1. Vivek Sharma & M. J. Hossain & S. M. Nawazish Ali & Muhammad Kashif, 2020. "A Photovoltaic-Fed Z-Source Inverter Motor Drive with Fault-Tolerant Capability for Rural Irrigation," Energies, MDPI, vol. 13(18), pages 1-19, September.
    2. 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.
    3. Khaled Itani & Alexandre De Bernardinis, 2022. "Electrothermal Multicriteria Comparative Analysis of Two Competitive Powertrains Applied to a Two Front Wheel Driven Electric Vehicle during Extreme Regenerative Braking Operations," Energies, MDPI, vol. 15(22), pages 1-27, November.
    4. Hafiz Ahmed & Samet Biricik & Elhoussin Elbouchikhi & Mohamed Benbouzid, 2020. "Adaptive Filtering-Based Pseudo Open-Loop Three-Phase Grid-Synchronization Technique," Energies, MDPI, vol. 13(11), pages 1-14, June.

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