Shadow dispersion of PV Array under variable irradiance for superior power Generation by Magic Square Configuration

  • Authors

    • G Sreenivasa Reddy
    • T Bramhananda Reddy
    • M Vijaya Kumar
  • Photovoltaic Cells, Mismatch Loss, Shading Patterns, Partial Shading, Magic Square, Power Enhancement, Global Peaks, Total Cross Tied (TCT).
  • The PV array generates smaller amount of the power compared with other electrical power generation components. There are many components that are adversely effected the output of PV array in such components, one is partial shading. Due to this, each module in PV array receives different solar irradiations causes different P-V characteristics of its peak values. This paper presents a pioneering method called as Magic Square configuration has been proposed to enhance the generated power of photovoltaic modules by configuring those are under affect of shade. Thus there is no change of electrical arrangement of PV modules in an array but only the objective location in the total cross tied (TCT) array is rearranged according to the magic square arrangement. Proposed paper gives comparison data with the conventional configuration method and hence the performance is calculated. The proposed technique provides a better solution that how shadow effect on the PV  modules has been reduced and how this shadow is distributed, and not only that also gives an idea  about how the inequality losses due to the partial shading is effectively reduced. The power loss of  various configurations of 3X3 and 4X4 array has been compared. The proposed technique is validated through MATLAB/Simulink environment.


  • References

    1. [1] Bidram A, Davoudi A, Balog S. Control and circuit techniques to mitigate partial shading effects in Photovoltaic arrays.IEEE Journal of Photovoltaics, 2012, 2(4): 532–546.

      [2] Mutoh N, Ohno M, Inoue T. A method for MPPT control while searching for parameters corresponding to weather conditions for PV generation systems. Transactions on Indus- trial Electronics, 2006, 53(4): 1055–1065.

      [3] Gao L, Dougal R A, Liu S, Iotova A P. Parallel-connected solar PV system to address partial and rapidly fluctuating shadow conditions. Transactions on Industrial Electronics, 2009, 56(5): 1548– 1556.

      [4] Mäki A, Valkealahti S. Power losses in long string and parallel connected short strings of series connected silicon-based photovoltaic modules due to partial shading conditions. IEEE Transactions on Energy Conversion, 2012, 27(1): 173–183.

      [5] Gazoli J R, Ruppert E, Villalva M G. Modeling and circuit-based simulation of photovoltaic arrays. Brazilian Power Electronics Conference. Bonito-Mato Grosso do Sul, Brazil, 2009, 35–45.

      [6] Wang Y J, Hsu P C. An investigation on partial shading of PV modules with different connection configurations of PV cells.Energy, 2011, 36(5): 3069–3078.

      [7] etrone G, Ramos-Paja C A. Modeling of photovoltaic fields in mismatched conditions for energy yield evaluations. Electric Power Systems Research, 2011, 81(4): 1003–1013.

      [8] Patnaik B,Sharma P,Trimurthulu E, Duttagupta S P, Agarwal V. Reconfiguration strategy for optimization of solar photovoltaic array under non-uniform illumination conditions. In: 37th IEEE Photovoltaic Specialists Conference. Seattle, washington, USA, 2011, 1859 –1864.

      [9] Villa L F L, Picault D, Raison B, Bacha S, Labonne A. Maximizing the power output of partially shaded photovoltaic plants through optimization of the interconnections among its modules. IEEE Journal of Photovoltaics, 2012, 2(2): 154–163.

      [10] Rani B I, Ilango G S, Nagamani C. Enhanced power generation from PV array under partialshading conditions by shade dispersion using Su Do Ku configuration. IEEE Transactions on Sustainable Energy, 2013, 4(3): 594–601.

      [11] Srinivasa Rao P, Saravana Ilango G, Nagamani C. Maximum power from PV arrays using a fixed configuration under different shading conditions. IEEE Journal of Photovoltaics, 2014, 4(2): 679– 686.

      [12] Ramaprabha R, Mathur B, Murthy M, Madhumitha S. New configuration of solar photo voltaic array to address partial shaded conditions. In: 3rd International Conference on Emerging Trends in Engineering and Technology.Nagpur,India,2010,328 - 333.

      [13] Masoum M A S, Dehbonei H, Fuchs E F. Theoretical and experimental analysis of Photovoltaic systems with voltage and current based maximum power point tracking. IEEE Transactions on Energy Conversion, 2002, 17(4): 514–522.

      [14] Wang Y J, Lin S S. Analysis of a partially shaded PV array considering different module connection schemes and effects of bypass diodes. In: International Conference and Utility Exhibition on Power and Energy Systems: Issues & Prospects for Asia , 2011: 1–7.

      [15] Vemuru S, Singh P, Niamat M. Analysis of photovoltaic array with reconfigurable modules under partial shading. In: 38th IEEEPhotovoltaic Specialists Conference. Austin, USA, 2012, 1437–1441.

      [16] Jazayeri M, Uysal S, Jazayeri K. A comparative study on different photovoltaic array topologies under partial shading conditions. In: IEEE PES T&D Conference and Exposition. Chicago, USA, 2014,1–5.

      [17] Srinivasa Rao P, Dinesh P, Saravana Ilango G, Nagamani C. Optimal Su-Do-Ku based interconnection scheme for increased power output from PV array under partial shading. Frontiers in Energy, 2015, 9(2): 199–210.

      [18] G. Sreenivasa Reddy, T. Bramhananda Reddy, M.Vijaya Kumar. "A MATLAB based PV Module Models analysis under Conditions of Nonuniform Irradiance", Energy Procedia, 2017.

      [19], "Test Method for Photovoltaic Module Power Rating FSEC Standard 202-10 January 2010".

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  • How to Cite

    Sreenivasa Reddy, G., Bramhananda Reddy, T., & Vijaya Kumar, M. (2018). Shadow dispersion of PV Array under variable irradiance for superior power Generation by Magic Square Configuration. International Journal of Engineering & Technology, 7(1.8), 172-177.