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Improved Fixed-Frequency SOGI Based Single-Phase PLL

Author

Listed:
  • Djordje Stojic

    (Electrical Institute Nikola Tesla, University of Belgrade, 11000 Belgrade, Serbia)

  • Tomasz Tarczewski

    (Institute of Engineering and Technology, Nicolaus Copernicus University in Torun, 87-100 Torun, Poland)

  • Lukasz J. Niewiara

    (Institute of Engineering and Technology, Nicolaus Copernicus University in Torun, 87-100 Torun, Poland)

  • Lech M. Grzesiak

    (Institute of Industrial Electronics, Warsaw University of Technology, 00-661 Warsaw, Poland)

Abstract

In this paper, an improved single-phase second order generalized integrator (SOGI) fixed-frequency phase-locked loop (FFPLL) is presented. The proposed improvement comprises the modification of the PLL input signal estimated phase angle correction factor, which is in this paper calculated and implemented with the exactly accurate value, while in the existing literature the approximated correction value is employed. Also, in this paper, the FFPLL with DC offset is presented, together with the corresponding estimated angle correction technique. Furthermore, the PLL with the positive sequence separation is outlined, based on the new FFPLL structure. The proposed technique is analyzed and verified by simulation and experimental runs, which proved the accuracy and efficiency of the proposed PLL technique. Furthermore, a corresponding PLL parameter values tuning procedure is presented that illustrates the dynamic performance improvements that SOGI based FFPLL introduces when compared with SOGI based PLL. Consequently, FFPLL combined with the proposed new estimated angle correction factor represents a significant improvement when compared to the conventional SOGI based PLL.

Suggested Citation

  • Djordje Stojic & Tomasz Tarczewski & Lukasz J. Niewiara & Lech M. Grzesiak, 2022. "Improved Fixed-Frequency SOGI Based Single-Phase PLL," Energies, MDPI, vol. 15(19), pages 1-15, October.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:19:p:7297-:d:933244
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    Cited by:

    1. Mohammad A. Bany Issa & Zaid A. Al Muala & Pastora M. Bello Bugallo, 2023. "Grid-Connected Renewable Energy Sources: A New Approach for Phase-Locked Loop with DC-Offset Removal," Sustainability, MDPI, vol. 15(12), pages 1-17, June.

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