In a solar photovoltaic array, it is possible that shadow may fall over some of its cells. Under partial shading conditions the PV characteristic gets more complex with multiple peaks. The purpose of this paper is to illustrate, by analyzing different shading situations, the effects that partial shading can cause in a PV array. First this is done by simulation using Matlab/Simulink, then the impact of shading is illustrated experimentally by measurements on a two commercial 140 W PV panels series connected.
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B. Alsayid, S. Alsadi, J. Jallad and M. Dradi, "Partial Shading of PV System Simulation with Experimental Results," Smart Grid and Renewable Energy, Vol. 4 No. 6, 2013, pp. 429-435. doi: 10.4236/sgre.2013.46049.
 S. Shah, S. Chauhan and H. M. Rai, “Characteristics of PV Array Used for Distributed Power Generation-Mo delling and Simulation,” International Journal on Em erging Technologies, 2010, pp. 61-66.
 R. Ramaprabha and B. I. Mathur, “Impact of partial Shading on Solar pv Module Containing Series Con nected Cells,” International Journal of Recent Trends in Engineering, Vol. 2, No. 7, 2007, pp. 56-60.
 D. Sera and Y. Baghzouz, “On the Impact of Partial Shading on PV Output Power,” WSEAS/IASME International Con ference on Renewable Energy Sources, 2008.
 B. Koirala, B. Sahan and N. Henze, “Study on MPP Mis match Losses in Photovoltaic Applications,” European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC) Hamburg, Fraunhofer, 2009, pp. 3727-3733.
 V. Di Dio, D. La Cascia and R. Micelli, “A Mathe-Mati cal Model to Determine the Electrical Energy Production in Photovoltaic Fields under Mismatch Effect,” 2009 In ternational Conference on Clean Electrical Power, Capri, 9-11 June 2009, pp. 46-51.
 M. C. Alonso-Garcia, J. M. Ruiz and W. Herrmann, “Com puter Simulation of Shading Effects in Photovoltaic Ar rays,” Renewable Energy, 2006, pp. 1986-1993.
 A. Kajihara and T. Harakawa, “Model of Photovoltaic Cell Circuits under Partial Shading,” IEEE International Conference on Industrial Technology, Hong Kong, 14-17 December 2005, pp. 886-870.
 C. Deline, “Partially Shaded Operation of a Grid-Tied pv System,” 34th IEEE Photovoltaic Specialists Conference, Philadelphia, 7-12 June 2009.
 M. S. Ngan and C. W. Tan, “Multiple Peak Tracking Algo rithm Using Particle Swarm Optimization Incorporated with Artificial Neural Network,” World Academy of Science, Engineering and Technology, 2011, pp. 379-385.
 E. Diaz-Dorado, A. Suarez-Garcia, C. Carrillo and J. Ci dras, “Influence of the Shadows in Photovoltaic Systems with Different Configurations of Bypass Diodes,” 2010 International Symposium on Power Electronics Electrical Drives Automation and Motion (SPEEDAM), Pisa, 14-16 June 2010, pp. 134-139.
 H. Patel and V. Agarwal, “Matlab-Based Modelling to Study the Effects of Partial Shading on pv Array Charac teristics,” IEEE Transactions on Energy Conversion, Vol. 23, No. 1, 2008, pp. 302-310. doi:10.1109/TEC.2007.914308