Comparison of four MPPT techniques for PV systems

International audienceThe working behavior of a module / PV array is non-linear and highly dependent on working conditions. As a given condition there is only one point at which the level of available power at its output is maximum. This point varies with time enlightenment and temperature. To ensure optimum operation the use of MPPT control allows us to extract the maximum power. This paper presents a comparative study of four widely-adopted MPPT algorithms such as Perturb and Observe Incremental Conductance Measurements of the variation of the open circuit voltage or of the short-circuit current. Their performance is evaluated using for all these techniques. In particular this study compares the behaviors of each technique in presence of solar irradiation variations and temperature fluctuations. These MPPT techniques will be compared using the Matlab / Simulink tool