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A Three-Phase Line-Interactive UPS System to Eliminate the Inrush Current Phenomenon during Switching-in of an Auxiliary Load while Powering the Main Load

  • Received : 2017.03.25
  • Accepted : 2018.04.03
  • Published : 2018.07.01

Abstract

Normally, various auxiliary loads are installed along with the main load in industrial applications. Usually, load transformers are used to convey such types of auxiliary loads. The transformers become energized when the loads are turned-on, consequently, high amplitude of inrush current appears at the output of the uninterrupted power supply (UPS) system. To mitigate these high current amplitudes, this manuscript suggests a three-phase line-interactive UPS system to counter the inrush current during the turning-on of the auxiliary load transformer while powering the main load by using a current controlled inverter. Experimental results of a laboratory-sized prototype are provided in the support of the proposed UPS system for validation.

Keywords

References

  1. S. S. H. Bukhari, T. A. Lipo, and B.-I. Kwon, "An inrush current elimination technique for the lineinteractive UPS systems during switching-in of an auxiliary load while feeding a main load," The 7th IET International conference on Power Electronics, Machines and Drives, PEMD-2014, 8-10 April. 2014.
  2. Yu-Hsing Chen and Po-Tai Cheng, "An inrush current mitigation technique for the line-interactive uninterruptible power supply systems," IEEE Trans. on Industrial Applications, vol. 46, no. 4, July/August 2010.
  3. S. S. H. Bukhari, S. Atiq, T. A. Lipo, and B.-I. Kwon, "A Cost-Effective, Single-Phase Line-Interactive UPS system that Eliminates Inrush Current Phenomenon for Transformer-Coupled Loads," J Electr Eng Technol., vol. 11, no. 3, pp. 675-682, May 2016. https://doi.org/10.5370/JEET.2016.11.3.675
  4. S. S. H. Bukhari, T. A. Lipo, and B.-I. Kwon, "An inrush current reduction technique for the lineinteractive uninterruptible power supply systems," Industrial Electronics Society, IECON 2013 - 39th Annual Conference of the IEEE, vol., no., pp. 430- 434, 10-13 Nov. 2013.
  5. P. C. Loh, M. J. Newman, D. N. Zmood and D. G. Holmes, "A comparative analysis of multiloop voltage regulation strategies for single and three-phase UPS systems," in IEEE Transactions on Power Electronics, vol. 18, no. 5, pp. 1176-1185, Sept. 2003. https://doi.org/10.1109/TPEL.2003.816199
  6. S. S. H. Bukhari, S. Atiq, T. A. Lipo, and B.-I. Kwon, "Asymmetrical Fault Correction for the Sensitive Loads Using a Current Regulated Voltage Source Inverter," Energies, vol. 9, no. 3, p. 196, Mar. 2016. https://doi.org/10.3390/en9030196
  7. S. S. H. Bukhari, S. Atiq, T. A. Lipo, and B.-I. Kwon, "Line-Interactive UPS System that Eliminates the Inrush Current Phenomenon," Electric Power Components and Systems, vol. 44, no. 11, pp. 1203-1214, June 2016. https://doi.org/10.1080/15325008.2015.1137996
  8. M. Nagpal, T. G. Martinich, A. Moshref, K. Morison, and P. Kundur, "Assessing and limiting impact of transformer inrush current on power quality," IEEE Trans. Power Delivery, vol. 21, no. 2, pp. 890-896, April 2006.
  9. S. G. Abdulsalam, W. Xu, W. L. A. Neves, and X. Liu, "Estimation of transformer saturation characteristics from inrush current waveforms," IEEE Trans. Power Delivery, vol. 21, no. 1, pp. 170-177, January 2006. https://doi.org/10.1109/TPWRD.2005.859295
  10. Chen, Y. , Yeh, M. , Cheng, P. , Liao, S. and Tsai, C., "An Inrush Current Reduction Technique for Multiple Inverter-Fed Transformers," IEEE Transaction on Industry Applications, vol. 50, no. 1, pp. 474-483, January/February 2014. https://doi.org/10.1109/TIA.2013.2269312
  11. B.-H. Kwon, J.-H. Choi and T.-W. Kim, "Improved single-phase line-interactive UPS," in IEEE Transactions on Industrial Electronics, vol. 48, no. 4, pp. 804-811, Aug 2001. https://doi.org/10.1109/41.937413
  12. M. Jamali, M. Mirzaie, S. A. Gholamian, "Calculation and analysis of transformer inrush current based on parameters of transformer and operating conditions," in Electronics and Electrical Engineering Journal, vol. 109, no. 3, pp. 17-20, 2011.
  13. W. Y. Kong, D. G. Holmes and B. P. McGrath, "Improved Stationary Frame AC Current Regulation using Feedforward Compensation of the Load EMF," Applied Power Electronics Conference and Exposition, 2009. APEC 2009. Twenty-Fourth Annual IEEE, Washington, DC, 2009, pp. 145-151, 15-19, Feb. 2009.
  14. D. G. Holmes, T. A. Lipo, B. P. McGrath and W. Y. Kong, "Optimized Design of Stationary Frame Three Phase AC Current Regulators," in IEEE Transactions on Power Electronics, vol. 24, no. 11, pp. 2417-2426, Nov. 2009. https://doi.org/10.1109/TPEL.2009.2029548
  15. S. S. H. Bukhari, M. Ayub, S. Atiq and B. -I. Kwon, "A Three-Phase Off-Line UPS System for Transformer Coupled Loads," IEICE Electronics Express (ELEX Letters), vol. 14, 2017.
  16. S. S. H. Bukhari, and B.-I. Kwon, "A single-phase on-line UPS system for multiple load transformers," IEICE Electronics Express (ELEX Letters), vol. 14, no. 5, pp. 20170050, March 2017. https://doi.org/10.1587/elex.14.20170050
  17. G. F. Franklin, J. D. Powell, and M. L. Workman, Digital control of dynamic systems, 3rd edition Menlo Park, Calif.: Addison-Wesley, 1998.
  18. S. S. H. Bukhari, T. A. Lipo, and B.-I. Kwon, "On-Line Uninterruptible Power Supply System," Korean Patent 10-1647201, Aug. 3, 2016.
  19. S. S. H. Bukhari, T. A. Lipo and B.-I. Kwon, "Three- phase Line-Interactive Uninterruptible Power Supply System with Multiple Load Transformers," Korean Patent 10-1678295, Nov. 15, 2016.