Abstrait

Effect of Complex Shading Patterns on Photovoltic Array & Global Power Point(GPP)

Smita Ganesh Pachpand, Prof. Pankaj H. Zope,Prof. S. R. Suralkar

Energy from the sun is the best option for electricity generation as it is available everywhere and is free to harmless. Single solar cells can produce 1w to 3 w of power from the incident solar insolation.Therefore PV (Photovoltic) array is constructed to get the required voltage. In normal condition, the PV array will show the single maxima on the P_V characteristic i.e. nothing but Maximum Power Point (MPP) and this point is unique. But at the shaded condition the Photovoltic (PV) array will show the multiple maximum points on the PV characteristic. So from that multiple maxima it is necessary to track the Global Power Point (GPP). This paper discusses the different shading pattern and its effect on the position of the Global Power Point (GPP). Tracking the GPPT at the non uniform insolation condition will increase the efficiency of the Photovoltaic System.