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Development of a Smart Static Transfer Switch Based on a Triac Semiconductor for AC Power Switching Control

Author

Listed:
  • Ahmed H. Okilly

    (Electrical & Electronics and Communication Engineering Department, Koreatech University, Cheonan 31253, Republic of Korea
    Electrical Engineering Department, Faculty of Engineering, Assiut University, Assiut 71516, Egypt)

  • Namhun Kim

    (Department of Electrical & Electronics, Korea Polytechnic, Gumi 39257, Republic of Korea)

  • Jonghyuk Lee

    (Electrical & Electronics and Communication Engineering Department, Koreatech University, Cheonan 31253, Republic of Korea)

  • Yegu Kang

    (Electrical & Electronics and Communication Engineering Department, Koreatech University, Cheonan 31253, Republic of Korea)

  • Jeihoon Baek

    (Electrical & Electronics and Communication Engineering Department, Koreatech University, Cheonan 31253, Republic of Korea)

Abstract

Power system disruptions can be categorized as issues with the quality of electricity brought on by voltage sags, lightning strikes, and other system-related interferences. The static transfer switch (STS) has recently emerged as the most important technology for electric power transmission, distribution, and control systems to manage power supply during power system disruption issues, particularly in cost-effectively supplying power to critical loads and sensitive loads without interruption. In this paper, for the switching between the two AC sources during the voltage disruptions issue with low transfer time, a smart static transfer switch (SSTS) based on a digital switching algorithm and Triac semiconductor switch is proposed and experimentally tested. A digital switching algorithm based on online AC voltage sensing and zero-crossing detection is proposed and implemented inside a DSP MCU. The printed circuit board (PCB) of the proposed SSTS is designed and manufactured for the experimental performance investigation with different AC input voltage conditions. A comparative study based on the advantages and disadvantages of the proposed SSTS system with the previous works is also presented. A smart static transfer switch with a transition time of less than one cycle and a digital protection technique during fault conditions is obtained in this work.

Suggested Citation

  • Ahmed H. Okilly & Namhun Kim & Jonghyuk Lee & Yegu Kang & Jeihoon Baek, 2023. "Development of a Smart Static Transfer Switch Based on a Triac Semiconductor for AC Power Switching Control," Energies, MDPI, vol. 16(1), pages 1-16, January.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:1:p:526-:d:1023303
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    References listed on IDEAS

    as
    1. Ahmed H. Okilly & Namhun Kim & Jeihoon Baek, 2020. "Inrush Current Control of High Power Density DC–DC Converter," Energies, MDPI, vol. 13(17), pages 1-24, August.
    2. Saad, Ahmed A. & Faddel, Samy & Mohammed, Osama, 2019. "A secured distributed control system for future interconnected smart grids," Applied Energy, Elsevier, vol. 243(C), pages 57-70.
    3. Keon-Woo Park & Chul-Hwan Kim, 2021. "Bi-Directional Power Flow in Switchgear with Static Transfer Switch Applied at Various Renewable Energies," Energies, MDPI, vol. 14(11), pages 1-11, May.
    4. Gongrun Wang & Yongxing Wang & Lifan Zhang & Shutian Xue & Enyuan Dong & Jiyan Zou, 2021. "A Novel Model of Electromechanical Contactors for Predicting Dynamic Characteristics," Energies, MDPI, vol. 14(22), pages 1-15, November.
    Full references (including those not matched with items on IDEAS)

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