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In the algorithms found in the literature for finding the optimum point of operation MPPT ( maximum power point tracking), of photovoltaic (PV) modules, the initial reference value is fixed arbitrarily and without constraints. This reduces the performance of research into the optimal operation point of PV systems. In order to improve this performance, a MPPT method based on a nonlinear approach is proposed for estimation of the initial value of the reference. The combination of this approach with the perturbation and observation (P and O) method has enabled progress to be made in the search for the optimal operation point of the PV system.
Tafticht et al. (Fri,) studied this question.