Abstract
The Maximum Power Point Tracking (MPPT) is a technique used in power electronic circuits to extract
maximum energy from the Photovoltaic (PV) Systems. In the recent decades, photovoltaic power generation
has become more important due its many benefits such as needs a few maintenance and environmental
advantages and fuel free. However, there are two major barriers for the use of PV systems, low energy
conversion efficiency and high initial cost. To improve the energy efficiency, it is important to work PV
system always at its maximum power point. So far, many researches are conducted and many papers were
published and suggested different methods for extracting maximum power point. This paper presents in
details implementation of Perturb and Observe MPPT using buck and buck-boost Converters. Some results
such as current, voltage and output power for each various combination have been recorded. The
simulation has been accomplished in software of MATLAB Math works.
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