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

The Korean Institute of Power Electronics (전력전자학회)
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Development of 50kW High Efficiency Modular Fast Charger for Both EV and NEV

EV와 NEV 겸용 50kW급 고효율 모듈형 급속충전기 개발

  • Kim, Min-Jae (Dept. Technology Research Institute New Power Plasma. co., Ltd.) ;
  • Kim, Yeon-Woo (Dept. of Electrical & Information Eng., Seoul Nat'l Univ. of Science and Technology) ;
  • Prabowo, Yos (Dept. of Electrical & Information 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)
  • Received : 2016.08.05
  • Accepted : 2016.08.30
  • Published : 2016.10.20
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Abstract

In this paper, a 50-kW high-efficiency modular fast charger for both electric vehicle (EV) and neighborhood electric vehicle (NEV) is proposed. The proposed fast charger consists of five 10-kW modules to achieve fault tolerance, ease of thermal management, and reduce component stress. Three-level topologies for both AC-DC and DC-DC converters are employed to use 600V MOSFET, resulting in ease of component selection and increase in switching frequency. The proposed three-level DC-DC converter with coupled inductor and its hybrid switching method can reduce the circulating current under wide output voltage range. A 50-kW prototype of the proposed fast charger was developed and tested to verify the validity of the proposed concept. Experimental results show that the proposed fast charger achieves a rated efficiency of 95.2% and a THD of less than 3%.

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References

  1. D. Aggeler, etc. al, "Ultra-fast dc-charge infrastructures for EV-mobility and future smart grids," in Proc. IEEE ISGTEUROPE, pp. 1-8. Oct. 2010.
  2. M. Yilmaz and P. T. Krein, "Review of battery charger topologies, charging power levels, and infrastructure for plug-in electric and hybrid vehicles," IEEE Trans. Power Electron., Vol. 28, No. 5, pp. 2151-2169, May 2013. https://doi.org/10.1109/TPEL.2012.2212917
  3. L. Tan, N. Zhu and B. Wu, "An integrated inductor for eliminating circulating current of parallel three-level DC-DC converter-based EV fast charger," IEEE Trans. Ind. Electron., Vol. 63, No. 3, pp. 1362-1371, Mar. 2016. https://doi.org/10.1109/TIE.2015.2496904
  4. S. Ahn, etc. al, "Implementation of 60-kW fast charging system for electric vehicle," in 2013 IEEE IECON, pp. 7256-7261, Nov. 2013.
  5. J. Park, M. Kim, H. Jeong, J. Kim and S. Choi, "Development of 50kW high efficiency fast charger with wide charging voltage range," The Transactions of the Korean Institute of Power Electronics, Vol. 21, No. 3, pp. 267-274, Jun. 2016. https://doi.org/10.6113/TKPE.2016.21.3.267
  6. H. Behjati, etc. al, "Modular DC-DC converters on graphs: Cooperative control," IEEE Trans. Power Electron., Vol. 29, No. 12, pp. 6725-6741, Dec. 2014. https://doi.org/10.1109/TPEL.2014.2303192
  7. P. Alemi, Y. C. Jeung, and D. C. Lee, "DC-link capacitance minimization in T-type three-level AC/DC/AC PWM converters," IEEE Trans. Ind. Electron., Vol. 62, No. 3, pp. 1382-1391, Mar. 2015. https://doi.org/10.1109/TIE.2014.2345354
  8. Y. Prabowo, M. Kim, S. Kim and S. Choi, "Development of EV fast charger using vienna rectifier," in Annual Conference of the KIPE, pp. 199-200, Jul. 2015.
  9. K. Jin and X. Ruan, "Hybrid full-bridge three-level LLC resonant converter - A novel DC-DC converter suitable for fuel-cell power system," IEEE Trans. Ind. Electron., Vol. 53, No. 5, pp. 1492-1503, Oct. 2006. https://doi.org/10.1109/TIE.2006.882020
  10. I. Lee and G. Moon, "Analysis and design of a three-level LLC series resonant converter for highand wide-input-voltage applications," IEEE Trans. Power Electron., Vol. 27, No. 6, pp. 2966-2979, Jun. 2012. https://doi.org/10.1109/TPEL.2011.2174381
  11. S. Srdic, X. Liang, C. Zhang, W. Yu and S. Lukic, "A SiC-based High-Performance Medium-Voltage Fast Charger for Plug-in Electric Vehicles," 2016 IEEE ECCE, Milwaukee, WI,