Simulation based analysis of the partial shading at different locations on polycrystalline PV array

Photovoltaic (PV) technologies have definite environmental advantages over other power generation techniques. No matter many technologies are used, PV power generation emits no emissions. Solar cells and PV modules are produced using a variety of manufacturing techniques, and as with any energy source or product, there are no dangers to the environment, human health, and safety associated with these processes. Like any other device, even PV cells and modules go under degradation due numerous reasons. Shading is one such mode of degradations which directly impact the output of a PV system. Along with that the output power drastically get impacted. There is a drop in the output power and the electrical characteristics gets distorted. During shading condition the characteristics curves,Power - Voltage and Current-Voltage curve are seen with unusual peaks which is the exact reason for the presence of shading in the module. The paper presents the various impact on the curves which confirm the presence of power loss due to shading.