Modeling of Single Phase Grid Connected Solar PV System with P & O MPPT Technique

ELECTRICAL

This paper deals with P & O method in which the MPPT algorithm is based on the calculation of the PV output power and the power change by sampling both the PV current and voltage. In this thesis an improved P&O MPPT algorithm for PV module is proposed. Since the solar PV panel have a non-linear voltage-current relationship, which greatly affected by sun irradiation and temperature, hence, it is necessary to identify an effective method in extracting maximum amount of power from PV cell/modules over the past decade, there were many types of algorithm have been published. Firstly the photovoltaic system is designed by using perturb and observe method. Then we check the performance of solar PV cell under difference irradiance levels. This technique has drawback that it cannot perform under sudden change in irradiance, temperature etc. So the modified Perturb and Observe (P&O) or more commonly known as variable step size P&O method was introduced and implemented throughout the project to overcome the common drawbacks of conventional P&O method. The operation of the entire solar MPPT system was observed through MATLAB/Simulink simulation.

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