Journal of the Korean Institute of Intelligent Systems (한국지능시스템학회논문지)

Korean Institute of Intelligent Systems (한국지능시스템학회)
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Pattern Analysis of Maximum Power Point by means of Solar Cell Module Array Simulation

태양전지 모듈 어레이 시뮬레이션을 이용한 최대전력점 패턴분석

  • Jeong, Ji-Won (PLASPO Co. Ltd.) ;
  • Park, In-Gyu (Department of Electronics Convergence Engineering, Wonkwang University) ;
  • Hwang, Kuk-Yeon (Department of Electronics Convergence Engineering, Wonkwang University) ;
  • Ahn, Tae-Chon (Department of Electronics Convergence Engineering, Wonkwang University)
  • Received : 2012.08.13
  • Accepted : 2013.02.11
  • Published : 2013.02.25
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Abstract

In the paper, a pattern analysis to decide whether the 1st local peak power point near open circuit voltage is the global peak power point or not, in case that the voltage and current at the 1st local peak power point are in a specific range, for Maximum Power Point Tracking on the photo voltaic power conversion system. When a solar cell panel array is shaded partially, multi-local peak power points can occur. That makes it hard to search the global peak power point. Through Tableau analysis using by piecewise linear solar cell model, V-I characteristic of a solar cell panel array circuit when partial shading problem happens, is simulated. The global peak power and the local peak power points is confirmed by simulations. Voltage and current values and patterns of V-I characteristic are analyzed. The generating efficiency of the solar cell panel array is improved, when the solar cell panel array circuit is operated at the power point estimated by setting up specific range.

본 논문에서는 태양광 발전시스템의 최대전력점을 추종하기 위해, 개방회로전압과 가까운 첫 번째 지역극대전력점(local peak power point)의 전압 및 전류값이 특정한 범위 내에 있을 경우, 첫 번째 지역극대점이 전역극대전력점(global peak power point)인지 판단할 수 있도록 패턴을 분석하였다. 직-병렬 어레이로 연결된 태양전지 모듈에 부분그늘문제(partial shading problem)가 발생할 경우 다수의 지역극대전력점이 관찰될 수 있어, 전역극대전력점을 찾는데 어려움이 있다. 부분선형 태양전지 모델을 이용한 태블로 해석(Tableau analysis)으로 태양전지 어레이 회로의 V-I 특성을 시뮬레이션하여 지역극대전력점과 전역극대전력점을 확인하고, 그에 해당하는 전압 및 전류 값과 V-I 특성곡선의 패턴을 분석하였다. 분석된 패턴을 통해 특정한 영역을 설정하여 첫 번째 지역극대전력점이 전역극대전력점 인지 판단하여 발전하는 경우, 첫 번째 지역극대전력점으로만 발전했을 때에 비해 효율이 향상되었다.

Keywords

References

  1. P. Lei, Y. Li and J. Seem, "SA novel topology for solving the partial shading problem in photovoltaic power generation system", Power Electronics and Motion Control Conference, IPEMC '09. IEEE 6th International, vol.1, pp.17-20 May 2009.
  2. H. Patel and V. Agarwal, "Maximum Power Point Tracking Scheme for PV Systems Operating Under Partially Shaded Conditions", IEEE Transactions on Industrial Electronics, vol. 55, no. 4, pp. 1689-1698, April 2008. https://doi.org/10.1109/TIE.2008.917118
  3. Ji-Won Jeong, Tae-Chon Ahn, "Detect Maximum Power Point in Solar Cell Panel Array", Summer Conference of The Korean Institute of Electrical Engineers vol.1, pp.1390-1391, June 2011.
  4. P. Pejovic and D. Maksimovic, "An algorithm for solving piecewise-linear networks that include elements with discontinuous characteristics", IEEE Transactions on Circuits and Systems-1: Fundamental Theory and Applications, vol. 43, no. 6, pp. 453-460, June 1996. https://doi.org/10.1109/81.503254
  5. D. Bedrosian and J. Vlach, "Time-Domain Analysis of Networks with Internally Controlled Switches" IEEE Trans. Circuits and Systems-I: Fundamental Theory and Applications, vol. 39, No. 3, pp.199-212, March 1992. https://doi.org/10.1109/81.128014
  6. Q-Cells_QPRO_Datasheet_Rev03.
  7. In-Kyu Park, "Piecewise Linear Diode Model of Region Partition Type for Circuit Simulations", Spring Conference of The Korean Institute of Electrical Engineers, vol.1, pp.273-278, April 2008.
  8. Hyundai Solar module SF-Series Datasheet, 2010.
  9. Suntech STP005S-12/Db Monocrystaline Silicon Solar Module Datasheet, 2011.
  10. G. D. Hachtel, I. K. Brayton and R. G. Gustavson, "The Sparse Tableau Approach to Network analysis and Design", IEEE Trans, Circuit Theory, vol. CT-18, no, 1, pp. 101-113, Jan. 1971.
  11. In-Kyu Park, "Merits of Tableau Analysis Method in Simulation of Power Electronics Circuits", Industry and Technology Research in Wonkwang Univ., vol. 27, pp.29-35, 2007.
  12. Edited: Hyun-Wha Lee, Photocell Generation for low-CO2 Green Growth: (A) guide for installers, architects and engineers, Gidari Press, 2009.
  13. S. Kazmi, H. Goto, O. Ichinokura and Hai-Jiao Guo, "An improved and very efficient MPPT controller for PV systems subjected to rapidly varying atmospheric conditions and partial shading", Power Engineering Conference, AUPEC '09. Austral- asian Universities, vol. 1, pp. 27-30 Sept. 2009.
  14. K. Emery and C. Osterwald, "Measurement of Photovoltaic Device Current as a Function of Voltage, Temperature, Intensity and Spectrum", Solar Energy Research Institute, Solar Cells, vol.21, pp. 313-327 1987.