An improved Perturb and Observe Based MPPT Method and Power Stabilization for Grid Connected PV System

Abstract

Solar obstetrics is now becoming increasingly important like a sustainable alternative. Under specific situations, a MPPT control tracker is utilized to elicit the greatest energy from photovoltaic cells. Many methods for tracking the peak power point have been proposed. The perturb and observe P&O algorithm is a very wide spread, because of its simple layout and sparse enforcement. However, it suffers from oscillation and power loss at stead state. To deal with such issues, a new P&O method is designed. This study develops an improved P&O approach for both grid-connected and standalone PV systems. Both of grid-connected and standalone photovoltaic systems have been simulated in Matlab/Simulink. The simulation results show the effectiveness of the proposed algorithm for MPPT, confirms its ability to reduce steady state oscillations and confirm that the model is applicable for both cases of PV system, stand-alone and grid-connected modes.