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

The Korean Institute of Power Electronics (전력전자학회)
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Design of an Integrated Current-Voltage Charging Compensator for the LLC Resonant Converter-Based Li-ion Battery Charger

LLC 공진형 컨버터 기반 리튬이온 배터리 충전기의 통합 전류-전압 보상기 설계방법 연구

  • Choi, Yeong-Jun (Dept. of Electrical Eng., HYPEC-EECS lab., Hanyang University) ;
  • Choi, See-Young (Dept. of Electrical Eng., HYPEC-EECS lab., Hanyang University) ;
  • Kim, Rae-Young (Dept. of Electrical Eng., HYPEC-EECS lab., Hanyang University)
  • Received : 2016.10.06
  • Accepted : 2016.12.08
  • Published : 2017.04.20
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Abstract

The conventional battery charger requires two separate voltage and current compensators to achieve constant current and constant-current-charging profile. This compensator configuration leads to an inevitable transient response during the mode change between the constant current and the constant voltage operation. Futhermore, a tedious and complicated design process is required to consider a widely changing battery voltage and the nonlinear electrical properties of Li-ion battery. This study proposes a single integrated voltage-current compensator of the LLC resonant converter for Li-ion battery charger applications to overcome the aforementioned drawbacks. The proposed compensator is designed to provide a smooth and reliable performance during the entire charging process while providing the reduced design efforts and seamless mode transient response. Several experimental results based on a 300 W prototype converter and its theoretical analysis are provided to verify the effectiveness of the proposed compensator.

Keywords

References

  1. T. Horiba, T. Maeshima, T. Matsumura, M. Koseki, J. Arai, and Y. Muranaka, "Applications of high power density lithium ion batteries," Journal of Power Sources, Vol. 146, pp. 107-110, Aug. 2005. https://doi.org/10.1016/j.jpowsour.2005.03.205
  2. L. Yi-Hwa, T. Jen-Hao, and L. Yu-Chung, "Search for an optimal rapid charging pattern for lithium-ion batteries using ant colony system algorithm," IEEE Transactions on Industrial Electronics, Vol. 52, pp. 1328-1336, 2005. https://doi.org/10.1109/TIE.2005.855670
  3. Y. Bo, F. C. Lee, A. J. Zhang, and H. Guisong,"LLC resonant converter for front end DC/DC conversion,"in Applied Power Electronics Conference and Exposition, APEC 2002. Seventeenth Annual IEEE, Vol. 2, pp. 1108-1112, 2002.
  4. B. Yang, "Topology investigation for front end DC/DC power conversion for distributed power system," Virginia Polytechnic Inst. State Univ., Ph.D. dissertation, 2003.
  5. H. Choi, "Analysis and design of LLC resonant converter with integrated transformer,"in Applied Power Electronics Conference, APEC 2007 - Twenty Second Annual IEEE, pp. 1630-1635, 2007.
  6. G. Spiazzi and S. Buso, "Effect of a split transformer leakage inductance in the LLC converter with integrated magnetics,"Power Electronics Conference (COBEP), Brazilian, pp. 135-140, 2013.
  7. Y. H. Liu and Y. F. Luo, "Search for an optimal rapid-charging pattern for li-ion batteries using the taguchi approach,"IEEE Transactions on Industrial Electronics, Vol. 57, pp. 3963-3971, 2010. https://doi.org/10.1109/TIE.2009.2036020
  8. L. R. Chen, "Design of duty-varied voltage pulse charger for improving li-ion battery-charging response,"IEEE Transactions on Industrial Electronics, Vol. 56, pp. 480-487, 2009. https://doi.org/10.1109/TIE.2008.2002725
  9. J. W. Huang, Y. H. Liu, S. C. Wang, and Z. Z. Yang, "Fuzzy-control-based five-step Li-ion battery charger,"in Power Electronics and Drive Systems, 2009. PEDS 2009. International Conference on, pp. 1547-1551. 2009.
  10. A. A.-H. Hussein and I. Batarseh, "A review of charging algorithms for nickel and lithium battery chargers,"IEEE Transactions on Vehicular Technology, Vol. 60, pp. 830-838, 2011. https://doi.org/10.1109/TVT.2011.2106527
  11. Y. S. Dow, H. I. Son, and H. D. Lee, "A study on half bridge LLC resonant converter for battery charger on board,"in Power Electronics and ECCE Asia (ICPE & ECCE), 2011 IEEE 8th International Conference on, pp. 2694-2698, 2011.
  12. J. Deng, S. Li, S. Hu, C. C. Mi, and R. Ma, "Design methodology of LLC resonant converters for electric vehicle battery chargers,"IEEE Transactions on Vehicular Technology, Vol. 63, pp. 1581-1592, 2014. https://doi.org/10.1109/TVT.2013.2287379
  13. F. Musavi, M. Craciun, D. S. Gautam, W. Eberle, and W. G. Dunford, "An LLC resonant DC-DC converter for wide output voltage range battery charging applications,"IEEE Transactions on Power Electronics, Vol. 28, pp. 5437-5445, 2013. https://doi.org/10.1109/TPEL.2013.2241792
  14. K. H. Park, Y. J. Choi, S. Y. Choi, and R. Y. Kim, "Design consideration of CC-CV controller of LLC resonant converter for Li-ion battery charger,"in Future Energy Electronics Conference (IFEEC), 2015 IEEE 2nd International, pp. 1-6, 2015.
  15. J. Jang, M. Joung, B. Choi, S. Hong, and S. Lee, "Dynamic analysis and control design of optocoupler-isolated LLC series resonant converters with wide input and load variations," IET Power Electronics, Vol. 5, No. 6, pp. 755-764, Mar. 2012. https://doi.org/10.1049/iet-pel.2011.0289
  16. J. Jang, M. Joung, S. Choi, Y. Choi, and B. Choi, "Current mode control for LLC series resonant dc-to-dc converters,"in Applied Power Electronics Conference and Exposition (APEC), 2011 Twenty-Sixth Annual IEEE, pp. 21-27, 2011.
  17. J. Jang, M. Joung, B. Choi, and H. G. Kim, "Dynamic analysis and control design of optocoupler-isolated LLC series resonant converters with wide input and load variations,"in Energy Conversion Congress and Exposition, ECCE 2009. IEEE, pp. 758-765, 2009.
  18. S. H. Yang, J. W. Liu, and C. C. Wang, "A single-chip 60-V bulk charger for series Li-ion batteries with smooth charge-mode transition,"IEEE Transactions on Circuits and Systems I: Regular Papers, Vol. 59, pp. 1588-1597, 2012. https://doi.org/10.1109/TCSI.2011.2177137
  19. M. Chen and G. A. Rincon-Mora, "Accurate, compact, and power-efficient Li-ion battery charger circuit," IEEE Transactions on Circuits and Systems II: Express Briefs, Vol. 53, pp. 1180-1184, 2006. https://doi.org/10.1109/TCSII.2006.883220
  20. FairChild, "AN-4151 : Half-bridge LLC resonant converter design using FSFR-series fairchild power switch," 2014.
  21. C. H. Chang, E. C. Chang, C. A. Cheng, H. L. Cheng, and S. C. Lin, "Small signal modeling of LLC resonant converters based on extended describing function," in Computer, Consumer and Control (IS3C), 2012 International Symposium on, pp. 365-368, 2012.
  22. E. X. Yang, F. C. Lee, and M. M. Jovanovic, "Small-signal modeling of series and parallel resonant converters," in Applied Power Electronics Conference and Exposition, 1992. APEC '92. Conference Proceedings 1992., Seventh Annual, pp. 785-792, 1992.
  23. Microchips, "AN1477 : Digital compensator design for LLC resonant converter," Nov. 21, 2012.
  24. H. Choi, "Analysis and design of LLC resonant converter with integrated transformer," in Applied Power Electronics Conference, APEC 2007 - Twenty Second Annual IEEE, pp. 1630-1635, 2007.