Abstract:
Currently, both on-grid and off-grid photovoltaic (PV) power systems are experiencing
rapid annual growth, becoming a vital part of the global energy landscape. However,
their performance is significantly influenced by weather conditions—particularly
fluctuations in solar irradiance and elevated solar cell temperatures. This study presents
the modeling and simulation of a grid-connected PV power generation system without
the use of batteries, implemented in MATLAB/Simulink. The primary objective is to
enhance the performance of solar energy systems through a control strategy based on
Maximum Power Point Tracking (MPPT), utilizing the Perturb and Observe (P&O)
algorithm, to maintain optimal operation regardless of whether variability. The PV
array is initially connected to a DC-DC boost converter and subsequently connected to
the AC grid through a DC/AC inverter. The inverter regulates both active and reactive
power to achieve a unity power factor at the grid connection point, while phase
synchronization is maintained using a Phase-Locked Loop (PLL).Simulation results
confirm the effectiveness of the proposed control approach in managing power flow,
ensuring the efficient delivery of maximum power to the electrical grid.
