The Transactions of the Korean Institute of Power Electronics (전력전자학회논문지)

The Korean Institute of Power Electronics (전력전자학회)
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Development of 3kW Hybrid ESS with Function of Emergency Power Supply

비상전원 기능을 갖는 3kW급 하이브리드 ESS 개발

  • Yang, Seok-Hyun (Dept. of Electrical & Information Eng., Seoul Nat'l Univ. of Science and Technology) ;
  • Kim, Min-Jae (Dept. of New Energy Eng., Seoul Nat'l Univ. of Science and Technology) ;
  • Choi, Se-Wan (Dept. of Electrical & Information Eng., Seoul Nat'l Univ. of Science and Technology) ;
  • Cho, Jun-Seok (EESYS Co. Ltd.)
  • Received : 2014.09.23
  • Accepted : 2014.11.07
  • Published : 2015.02.20
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Abstract

This paper proposes a high-efficiency 3-kW hybrid ESS with emergency power supply. The proposed system enables efficient use of power from photovoltaic (PV) cells and energy storage system (ESS). The proposed system can operate as an uninterruptible power supply (UPS) when grid fault occurs, providing seamless transfer from grid-connected mode to stand-alone mode. The LLC converter for PV achieves ZVS turn-on of switches and ZCS turn-off of diodes, and the isolated bidirectional DC-DC converter for ESS achieves ZCS turn-off regardless of load condition, resulting in high efficiency. The efficiency and performance of the proposed hybrid ESS has been verified by a 3-kW prototype.

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References

  1. F. Blaabjerg, F. Iov, T. Kerekes, R. Teodorescu, "Trends in power electronics and control of renewable energy systems," in 14th International Power Electronics and Motion Control Conference (EPE/PEMC), pp. 1-19, 2010.
  2. H. Yan, Z. Zhou, H. Lu, "Photovoltaic industry and market investigation," IEEE Sustainable Power Generation and Supply, 2009.
  3. S. Chiang, K. Chang, and C. Yen, "Residential photovoltaic energy storage system," IEEE Industrial Electronics, Vol. 45, No. 3, pp. 385-394, June 1998. https://doi.org/10.1109/41.678996
  4. D. Wang, F. Z. Peng, "Smart gateway grid: A DG-based residential electric power supply system," IEEE Transactions on Smart Grid, Vol 3, No 4, pp. 2232-2239, Dec. 2012. https://doi.org/10.1109/TSG.2012.2214070
  5. A. Emadi, A. Nasiri, and S. B. Bekiarov, Uninterruptible Power Supplies and Active Filters. Boca Raton, FL: CRC Press, Oct. 2004.
  6. G. Q. Shen, D. H. Xu, and X. M. Yuan, "A novel seamless transfer control strategy based on voltage amplitude regulation for utility-interconnected fuel cell inverters with an LCL-filter," in Proc. IEEE Power Electron. Spec. Conf., pp. 1-6, Jun. 2006.
  7. Y. A.-R. I. Mohamed and A. Radwan, "Hierarchical control system for robust micro-grid operation and seamless mode-transfer in active distribution systems," IEEE Trans. Smart Grid, Vol. 2, No. 2, pp. 352-362, Jun. 2011. https://doi.org/10.1109/TSG.2011.2136362
  8. W. Zhang, D. Xu, X. Li, R. Xie, H. Li, D. Dong, C. Sun, and M. Chen, "Seamless transfer control strategy for fuel cell uninterruptible power supply system," IEEE Trans. Power Electron., Vol. 28, No. 2, pp. 717-729, Feb. 2013. https://doi.org/10.1109/TPEL.2012.2204777
  9. W. Zhang, D. Xu, X. Li, R. Xie, H. Li, D. Dong, C. Sun, and M. Chen, "Seamless transfer control strategy for fuel cell uninterruptible power supply system," IEEE Trans. Power Electron., Vol. 28, No. 2, pp. 717-729, Feb. 2013. https://doi.org/10.1109/TPEL.2012.2204777
  10. H. Hu, S. Harb, J. Shen, and I. Batarseh, "A review of power decoupling techniques for microinverters with three different decoupling capacitor locations in PV systems," IEEE Trans. Power Electron., Vol. 28, No. 6, pp. 2711-2726, Jun. 2013. https://doi.org/10.1109/TPEL.2012.2221482
  11. G. Ivensky, S. Bronshtein, and A. Abramovitz, "Approximate analysis of resonant LLC dc-dc converter," IEEE Trans. Power Electron., Vol. 26, No. 11, pp. 3274-3284, Nov. 2011. https://doi.org/10.1109/TPEL.2011.2142009
  12. Yingli Solar Datasheet of PV module YL230P-29b
  13. J. Park, M. Kwon, and S. Choi, "Design and control of a bi-directional resonant DC-DC converter for automotive engine/battery hybrid power generators," IEEE Trans. Power Electron., Vol. 29, No. 7, pp. 3748-3757, Jul. 2014. https://doi.org/10.1109/TPEL.2013.2281826
  14. M. Liserre, F. Blaabjerg, S. Hansen, "Design and control of an LCL-filter-based three-phase active rectifier," IEEE Transactions on Industry Applications, Vol. 41, No. 5, pp. 1281-1291, Sep./Oct. 2005. https://doi.org/10.1109/TIA.2005.853373
  15. S. Jung and S. Choi. "Optimized LCL filter design method of utility interactive inverter," Transactions of the Korean Institute of Power Electronics, Vol. 18, No. 1, pp. 103-109, Feb. 2013. https://doi.org/10.6113/TKPE.2013.18.1.103

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