자연방전을 고려한 개선된 슈퍼커패시터의 동특성 모델 개발

Development of the Improved Dynamic Model of the Supercapacitor Considering Self-Discharge

  • 발행 : 2009.06.20

초록

슈퍼커패시터는 전력밀도가 높고 사이클 수명이 길며 깨끗한 특성으로 인해 신재생에너지원의 동특성 보상 및 배터리의 동작시간이나 수명연장을 목적으로 널리 사용되고 있다. 본 논문에서는 개선된 슈퍼커패시터의 동특성 모델을 전기화학적 임피던스 분광법(Electrochemical Impedance Spectroscopy)을 이용하여 개발한다. 개발된 모델은 슈퍼커패시터의 정확한 동적 행동을 예측하거나 특정 충전상태(State-Of-Charge)에서의 정확한 정전용량 값을 계산하는데 사용될 수 있다. 주파수영역에서 개발된 모델은 Matlab/Simulink 시뮬레이션을 위하여 시간영역으로 등가 변환된다. 시뮬레이션 결과는 실험 결과와 일치하였으며, 이를 통해 개발된 모델의 유용함과 정확성을 증명하였다.

Due to its high power density, long cycle life and clean nature supercapacitors are widely used for improving the dynamic characteristics of the new and renewable energy sources and extending the battery run-time and life. In this paper improved dynamic model of the supercapacitor is developed by the electrochemical impedance spectroscopy technique. The developed model can be used to accurately estimate the dynamic behaviour of the supercapacitor and calculate the exact capacitance value at a certain state of charges. The model of the supercapacitor in the frequency domain is equivalently transformed into that in the time domain for Matlab/Simulink simulaton. The simulation data shows fine agreements with experimental results, thereby proving the validity and the accuracy of the developed model.

키워드

참고문헌

  1. Aurelien Du Pasquir, Irene Plitz, Serafin Menical, Glenn Amatucci, 'A comparative study of Li-ion battery, supercapacitor and nonaqueous asymmetric hybrid devices for automotive applications', Journal of Power Sources, Vol. 115, pp. 171-178, 2003 https://doi.org/10.1016/S0378-7753(02)00718-8
  2. J.N. Marie Francoise, H. Gualous, R. Outbib, A. Berthon, '42V Power Net with supercapacitor and battery for automotive applications', Journal of Power Sources, Vol. 143, pp. 275-283, 2005 https://doi.org/10.1016/j.jpowsour.2004.12.011
  3. Eugenio Faggioli, Piergeorgio Rena, Veronique Danel, X. Andrieu, Ronald Mallant, Hans Kahlen, 'Supercapacitors for the energy management ofelectric vehicles', Journal of Power Sources, Vol. 84, pp. 261-269, 1999 https://doi.org/10.1016/S0378-7753(99)00326-2
  4. Phatiphat Thounthong, Stphane Rael, Bernard Davat, 'Fuel Cell and Supercapacitors for Automotive Hybrid Electrical System', ECTI Transactions on Electrical ENG., Vol. 3, 2005
  5. R. Faranda, M. Gallina and D.T. Son, 'A new simplified model of Double-Layer Capacitors', IEEE, 2007
  6. Luis Zubieta, Richard Bonert, 'Characterization of Double-Layer Capacitors for Power Electronics Applications', IEEE Transactions on industry applications, Vol. 36, No. 1, 2000
  7. R. De Levie, 'Electrochemical Response of Porous and Rough Electrodes', Advances in Electrochemistry and Electrochemical Engineering, Vol. 6, 1967
  8. S. Buller, E. Karden, D. kok, De Doncker, 'Modeling the Dynamic Behavior of Supercapacitors Using Impedance Spectroscopy', IEEE, Vol. 38, No. 6, 2002
  9. B.E. Conway, Electrochemical Supercapacitors: Scientific Principles and Technological Applications, Kluwer Academic/Plenum Publishers, New York, 1999
  10. F. Belhachemi, S. Rael, B. Davat, 'A physical based model of power electric double-layer supercapacitors', IEEE-IAC, Vol. 5, pp. 3069-3076, 2000
  11. 백운기, 박수문, 전기화학, 청문각, 2007
  12. B.W. Ricketts, C. Ton-That, 'Self-discharge of carbon-based supercapacitors with organic electrolytes', Journal of Power Sources, Vol. 89, pp. 64-69, 2000 https://doi.org/10.1016/S0378-7753(00)00387-6
  13. B.E. Conway, W.G. Pell, T-C. Liu, 'Diagnostic analysis for mechanisms of self-discharge of electrochemical capacitors and batteries', Journal of Power Sources, Vol. 65, pp. 53-59, 1997 https://doi.org/10.1016/S0378-7753(97)02468-3
  14. J. Bisquert, G. Garcia-Belmonte, 'Complex plane analysis of pn junction forward-voltage impedance', IEEE Electronics Letters, Vol. 33, No. 10, 1997
  15. 이주형, 최우진, '전기화학적 전력기기의 모델링을 위한 저가형 임피던스 분광 시스템의 개발', 전력전자학회 논문지, Vol. 13, No. 1, pp. 46-54, 2008, Feb
  16. J.R. Macdonald, 'Impedance Spectroscopy', A john Wiley & Sons, Inc. Publication 1987
  17. F .Rafik, H. Gualous, R. Gallay, A. Crausaz, A. Berthon, 'Frequency, thermal and voltage supercapacitor characterization and modeling', Journal of Power Sources, Vol. 165, pp. 928-934, 2007 https://doi.org/10.1016/j.jpowsour.2006.12.021
  18. P. Mauracher, 'Modellbildung und Verbundoptimierung bei Elektrostraßenfahrzeugen', JPh.D. dissertation, RWTH Aachen, Aachen, Germany, 1996
  19. Murray R. Spiegel, Laplace Transform, 1965
  20. A. Salkind, T. Atwater, P. Singh, S. Nelatury, S. Damodar, C. Fennie Jr, D. Reisner, 'Dynamic characterization of small lead-acid cells', Journal of Power Sources, Vol. 96, pp. 151-159, 2001 https://doi.org/10.1016/S0378-7753(01)00561-4