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Elimination of the Inrush Current Phenomenon Associated with Single-Phase Offline UPS Systems

Author

Listed:
  • Syed Sabir Hussain Bukhari

    (Deptartment of Electronic Systems Engineering, Hanyang University ERICA, Ansan 426-791, Korea)

  • Shahid Atiq

    (Deptartment of Electronic Systems Engineering, Hanyang University ERICA, Ansan 426-791, Korea)

  • Byung-il Kwon

    (Deptartment of Electronic Systems Engineering, Hanyang University ERICA, Ansan 426-791, Korea)

Abstract

Critical load applications always rely on UPS systems to uphold continuous power during abnormal grid conditions. In case of any power disruption, an offline UPS system starts powering the load to avoid blackout. However, this process can root the momentous inrush current for the transformer installed before the load. The consequences of inrush current can be the reduction of output voltage and tripping of protective devices of the UPS system. Furthermore, it can also damage the sensitive load and decrease the transformer’s lifetime. To prevent the inrush current, and to avoid its disruptive effects, this research suggests an offline UPS system based on a current regulated inverter that eliminates the inrush current while powering the transformer coupled loads. A detailed comparative analysis of the conventional and proposed topologies is presented and the experiment was performed by using a small prototype to validate the performance, and operation of the proposed topology.

Suggested Citation

  • Syed Sabir Hussain Bukhari & Shahid Atiq & Byung-il Kwon, 2016. "Elimination of the Inrush Current Phenomenon Associated with Single-Phase Offline UPS Systems," Energies, MDPI, vol. 9(2), pages 1-16, February.
    • Handle: RePEc:gam:jeners:v:9:y:2016:i:2:p:96-:d:63445
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    References listed on IDEAS

    as
    1. Yu Zhang & Minying Li & Yong Kang, 2014. "PID Controller Design for UPS Three-Phase Inverters Considering Magnetic Coupling," Energies, MDPI, vol. 7(12), pages 1-20, November.
    2. Jelena Loncarski & Mats Leijon & Milan Srndovic & Claudio Rossi & Gabriele Grandi, 2015. "Comparison of Output Current Ripple in Single and Dual Three-Phase Inverters for Electric Vehicle Motor Drives," Energies, MDPI, vol. 8(5), pages 1-17, April.
    3. Xiaobo Dou & Kang Yang & Xiangjun Quan & Qinran Hu & Zaijun Wu & Bo Zhao & Peng Li & Shizhan Zhang & Yang Jiao, 2015. "An Optimal PR Control Strategy with Load Current Observer for a Three-Phase Voltage Source Inverter," Energies, MDPI, vol. 8(8), pages 1-21, July.
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    Cited by:

    1. P. Sathishkumar & T. N. V. Krishna & Himanshu & Muhammad Adil Khan & Kamran Zeb & Hee-Je Kim, 2018. "Digital Soft Start Implementation for Minimizing Start Up Transients in High Power DAB-IBDC Converter," Energies, MDPI, vol. 11(4), pages 1-18, April.
    2. Syed Sabir Hussain Bukhari & Shahid Atiq & Thomas A. Lipo & Byung-il Kwon, 2016. "Asymmetrical Fault Correction for the Sensitive Loads Using a Current Regulated Voltage Source Inverter," Energies, MDPI, vol. 9(3), pages 1-14, March.
    3. Juan Carlos Iglesias-Rojas & Erick Velázquez-Lozada & Roberto Baca-Arroyo, 2022. "Online Failure Diagnostic in Full-Bridge Module for Optimum Setup of an IGBT-Based Multilevel Inverter," Energies, MDPI, vol. 15(14), pages 1-14, July.

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