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Advanced Control Algorithm for Three-Phase Shunt Active Power Filter Using Sliding DFT

Author

Listed:
  • Krzysztof Sozanski

    (Institute of Automation and Electronics and Electrical Engineering, University of Zielona Góra, ul. Szafrana 9, 65-516 Zielona Góra, Poland)

  • Pawel Szczesniak

    (Institute of Automation and Electronics and Electrical Engineering, University of Zielona Góra, ul. Szafrana 9, 65-516 Zielona Góra, Poland)

Abstract

This paper describes n digital control algorithm for a three-phase shunt active power filter (APF) using switching–sliding discrete Fourier transform (SSDFT). Traditionally, APF control algorithms use first harmonic detector circuits, which can be implemented using the SDFT algorithm. The classical SDFT algorithm is characterized by long-term stability issues, resulting from numerical errors. Many complex modifications to improve the stability of the SDFT algorithm have been proposed in the scientific literature. This article proposes a solution to the SDFT stability problem using the basic structure of the algorithm. The authors propose the use of the switching SDFT algorithm, where two original SDFT algorithms are implemented in parallel. Both algorithms are turned on alternately after a set period of time and reset to zero in order to reset numerical errors causing their unstable operation. Compared to the classical three-phase SDFT algorithm, the three-phase SSDFT requires only about 25% more arithmetic operations. The proposed approach has been validated using experimental tests and dramatically reduces the numerical errors. The control algorithm has been implemented using the TMS320F28379D microcontroller. The sampling method using only the internal A/D converter of a microcontroller is also presented. The article includes the experimental test results of the complete APF.

Suggested Citation

  • Krzysztof Sozanski & Pawel Szczesniak, 2023. "Advanced Control Algorithm for Three-Phase Shunt Active Power Filter Using Sliding DFT," Energies, MDPI, vol. 16(3), pages 1-17, February.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:3:p:1453-:d:1054420
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    References listed on IDEAS

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    1. Soumya Ranjan Das & Prakash Kumar Ray & Arun Kumar Sahoo & Somula Ramasubbareddy & Thanikanti Sudhakar Babu & Nallapaneni Manoj Kumar & Rajvikram Madurai Elavarasan & Lucian Mihet-Popa, 2021. "A Comprehensive Survey on Different Control Strategies and Applications of Active Power Filters for Power Quality Improvement," Energies, MDPI, vol. 14(15), pages 1-32, July.
    2. Joao L. Afonso & Mohamed Tanta & José Gabriel Oliveira Pinto & Luis F. C. Monteiro & Luis Machado & Tiago J. C. Sousa & Vitor Monteiro, 2021. "A Review on Power Electronics Technologies for Power Quality Improvement," Energies, MDPI, vol. 14(24), pages 1-71, December.
    3. Dawid Buła & Dariusz Grabowski & Marcin Maciążek, 2022. "A Review on Optimization of Active Power Filter Placement and Sizing Methods," Energies, MDPI, vol. 15(3), pages 1-35, February.
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    Cited by:

    1. Krzysztof Sozański, 2023. "Overview of Signal Processing Problems in Power Electronic Control Circuits," Energies, MDPI, vol. 16(12), pages 1-26, June.

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