Effects of partial shading on energy and exergy efficiencies for photovoltaic panels

Abstract Photovoltaic (PV) technology becomes very popular with development of material science among the indispensable of solar energy in recent years. In this paper is investigated the electrical performance and thermodynamics analysis under the shading shapes and shading ratios of photovoltaics panels which have in 75 W power. The operating and electrical parameters of a photovoltaic panel are including cell temperature, overall heat loss coefficient, fill factor, etc. With this aim, an experimental set-up was constructed and serial experiments were done for different parameters such as shading ratio and positions. Three different cases of shading effects as cell, horizontal and vertical shading at different percentage. The results showed that the values of fill factor are also determined for the systems and effect of fill factor on the efficiencies is also evaluated. The shading makes important effect on energy and exergy efficiencies of the system and the most important effect is formed in case of horizontal shading. The maximum power loss was occurred at the shading rate 100% as 69.92% in cellular, 66.93% in vertical, 99.98% in horizontal shading.

[1]  Birol Kılkış,et al.  Exergy metrication of radiant panel heating and cooling with heat pumps , 2012 .

[2]  K. Sudhakar,et al.  Energy and exergy analysis of 36 W solar photovoltaic module , 2014 .

[3]  M. Bidabadi,et al.  The influence of radiation on the flame propagation through micro organic dust particles with non-unity Lewis number , 2014 .

[4]  Ibrahim Dincer,et al.  Role of exergy in increasing efficiency and sustainability and reducing environmental impact , 2008 .

[5]  K. Naito,et al.  Simulation of I–V characteristics of a PV module with shaded PV cells , 2003 .

[6]  Zhen Zhang,et al.  Characteristic output of PV systems under partial shading or mismatch conditions , 2015 .

[7]  Arif Hepbasli,et al.  A key review on exergetic analysis and assessment of renewable energy resources for a sustainable future , 2008 .

[8]  Anis Sakly,et al.  Comparison between conventional methods and GA approach for maximum power point tracking of shaded solar PV generators , 2013 .

[9]  Eduardo F. Fernández,et al.  A methodology for the electrical characterization of shaded high concentrator photovoltaic modules , 2015 .

[10]  Eduard Muljadi,et al.  Determination of the optimal configuration for a photovoltaic array depending on the shading condition , 2013 .

[11]  Rupendra Kumar Pachauri,et al.  Comprehensive investigation of PV arrays with puzzle shade dispersion for improved performance , 2016 .

[12]  Sanjay Agrawal,et al.  Exergoeconomic analysis of glazed hybrid photovoltaic thermal module air collector , 2012 .

[13]  Sanjay Agrawal,et al.  Energy and exergy analysis of hybrid micro-channel photovoltaic thermal module , 2011 .

[14]  J. P. Holman,et al.  Experimental methods for engineers , 1971 .

[15]  R. Petela,et al.  An approach to the exergy analysis of photosynthesis , 2008 .

[16]  Ibrahim Dincer,et al.  Thermodynamic analysis of solar photovoltaic cell systems , 2007 .

[17]  Ibrahim Dincer,et al.  Thermodynamic assessment of photovoltaic systems , 2009 .

[18]  H. Esen,et al.  Investigation of Photovoltaic Assisted Misting System Application for Arbor Refreshment , 2015 .

[19]  Macedon Moldovan,et al.  Comparative analysis of the infield response of five types of photovoltaic modules , 2016 .

[20]  Sonia Leva,et al.  Experimental investigation of partial shading scenarios on PV (photovoltaic) modules , 2013 .

[21]  G. R. Bindu,et al.  A novel Zig-Zag scheme for power enhancement of partially shaded solar arrays , 2016 .

[22]  M. Bidabadi,et al.  An analytical study of radiation effect on the ignition of magnesium particles using perturbation theory , 2010 .

[23]  Sanjay Agrawal,et al.  Overall thermal energy and exergy analysis of hybrid photovoltaic thermal array , 2012 .

[24]  Mehmet Esen,et al.  Energy and exergy analysis of a ground-coupled heat pump system with two horizontal ground heat exchangers , 2007 .

[25]  Seddik Bacha,et al.  Forecasting photovoltaic array power production subject to mismatch losses , 2010 .

[26]  C. Larbes,et al.  Modeling, analysis and comparison of solar photovoltaic array configurations under partial shading conditions , 2015 .

[27]  M. Koehl,et al.  Impact of soiling on IV-curves and efficiency of PV-modules , 2015 .

[28]  Ibrahim Dincer,et al.  A novel approach for estimation of photovoltaic exergy efficiency , 2012 .

[29]  Hikmet Esen,et al.  Experimental energy and exergy analysis of a double-flow solar air heater having different obstacles on absorber plates , 2008 .

[30]  Hikmet Esen,et al.  Design and Implementation of Automatic Wheat Mower Based on Smart Sensor Fed by a Photovoltaic , 2016 .

[31]  Yasin Varol,et al.  Buoyancy induced heat transfer and fluid flow inside a tilted wavy solar collector , 2007 .

[32]  Chris Deline,et al.  A simplified model of uniform shading in large photovoltaic arrays , 2013 .